GE P741 Technical Manual Download

Page: 199 / 560

Application Notes

P74x/EN AP/Na7

MiCOM P741, P742, P743

(AP) 6-33

6.5

Topology processing

The following scenarios demonstrate how the dynamic topology processing works and
accommodates anomalies and discrepancies in the scheme.

6.5.1

Single bar or double bus with bus sectionaliser

P0873ENa

Bus Section Closed

Isolator Closed

CB Closed

Zone 1 = CT1 + CT2
Zone 1 = BB1 + BB2

Check Zone = CT1 + CT2

FIGURE 13: BUS SECTION CLOSED

A zone is defined from a CT to an other CT or an open electrical element (coupler CB or
isolator).

As all the breakers and isolators are closed there is only one zone including BB1 and BB2.

P742/3

n+ 1

BB1

BB2

Zone 1

Zone 2

P742/3

n+ 1

BB1

BB2

Zone 1

Zone 2

P0874ENa

FIGURE 14: BUS SECTION OPEN

Summary of Contents for P741

Page 1: ...GE Energy Connections Grid Solutions MiCOM P40 Agile P741 P742 P743 Technical Manual Busbar Differential Protection Relay Hardware version J and K Software version 51 Publication reference P74x EN M Na7 ...

Page 2: ......

Page 3: ...74x EN PL Na7 Section 8 Measurements and Recording P74x EN MR Na7 Section 9 Firmware Design P74x EN FD Na7 Section 10 Commissioning P74x EN CM Na7 Section 11 Maintenance P74x EN MT Na7 Section 12 Troubleshooting P74x EN TS Na7 Section 13 SCADA Communications P74x EN SC Na7 Section 14 Symbols and Glossary P74xEN SG Na7 Section 15 Installation P74x EN IN Na7 Section 16 Firmware and Service Manual Ve...

Page 4: ......

Page 5: ...Introduction P74x EN IT Na7 MiCOM P741 P742 P743 IT INTRODUCTION Hardware Suffix J and K Software Version 51 ...

Page 6: ...P74x EN IT Na7 Introduction MiCOM P741 P742 P743 ...

Page 7: ... P74x EN IT Na7 MiCOM P741 P742 P743 IT 1 1 IT CONTENTS 1 DOCUMENTATION STRUCTURE 3 2 INTRODUCTION TO MiCOM 5 3 PRODUCT SCOPE 6 3 1 Functional overview 6 3 2 Ordering options 8 FIGURES FIGURE 1 FUNCTIONAL DIAGRAM 7 ...

Page 8: ...P74x EN IT Na7 Introduction IT 1 2 MiCOM P741 P742 P743 IT ...

Page 9: ...nges step sizes and defaults together with a brief explanation of each setting P74x EN OP Operation A comprehensive and detailed functional description of all protection and non protection functions P74x EN AP Application Notes This section includes a description of common power system applications of the relay calculation of suitable settings some typical worked examples and how to apply the sett...

Page 10: ...available for download from our website P74x EN SG Symbols and Glossary List of common technical abbreviations found within the product documentation P74x EN IN Installation Recommendations on unpacking handling inspection and storage of the relay A guide to the mechanical and electrical installation of the relay is provided incorporating earthing recommendations All external wiring connections to...

Page 11: ...ur power supply control system The components within MiCOM are P range protection relays C range control products M range measurement products for accurate metering and monitoring S range versatile PC support and substation control packages MiCOM products include extensive facilities for recording information on the state and behaviour of the power system using disturbance and fault records They c...

Page 12: ...ential high speed and delayed busbar protection 87CZ P CzPPDIF Check Zone segregated biased phase current differential high speed and delayed busbar protection 87BB N NeuPDIF Sensitive earth fault bias current controlled busbar protection 87 CZ N CzNPDIF Check Zone segregated biased earth current controlled busbar protection 50 51 P OcpPTOC Phase overcurrent protection 2 stages 50 51 N EfmPTOC Ear...

Page 13: ...ative setting groups Programmable function keys P741 and P743 Control inputs Programmable scheme logic Programmable allocation of digital inputs and outputs Sequence of event recording Comprehensive disturbance recording waveform capture Fully customizable menu texts Multi level password protection Power up diagnostics and continuous self monitoring of relay Application overview FIGURE 1 FUNCTIONA...

Page 14: ... Ethernet Self Healing Ring 2 multi mode fibre ports Modulated IRIG B G Redundant Ethernet Self Healing Ring 2 multi mode fibre ports Un modulated IRIG B H Redundant Ethernet RSTP 2 multi mode fibre ports Modulated IRIG B J Redundant Ethernet RSTP 2 multi mode fibre ports Un modulated IRIG B K Redundant Ethernet Dual Homing Star 2 multi mode fibre ports Modulated IRIG B L Redundant Ethernet Dual H...

Page 15: ...d None 1 Product Specific 8 Relays Outputs and 16 Status Inputs A 8 Relays Outputs 4 High Break and 8 Status Inputs B Protocol Options K Bus Courier IEC60870 5 103 Via KITZ274 Mounting Flush Panel Mounting with Harsh Environment Coating M Language Multilingual English French German Spanish 0 Multilingual English French German Russian 5 Software Issue Unless specified the latest version will be del...

Page 16: ...Modulated IRIG B L Redundant Ethernet Dual Homing Star 2 multi mode fibre ports Un modulated IRIG B M Redundant Ethernet PRP HSR 2 fibre ports Modulated IRIG B N Redundant Ethernet PRP HSR 2 fibre ports Unmodulated IRIG B P Product Specific 16 Relays Outputs and 24 Status Inputs A 16 Relays Outputs 4 High Break and 16 Status Inputs B 8 Relays Outputs 4 High Break and 24 Status Inputs C 8 Relays Ou...

Page 17: ...Technical Data P74x EN TD Na7 MiCOM P741 P742 P743 TD TECHNICAL DATA Hardware Suffix J and K Software Version 51 ...

Page 18: ...P74x EN TD Na7 Technical Data MiCOM P741 P742 P743 ...

Page 19: ...erface to S1 software PEB rated Maximum cable length 15 m Front Download Monitor Port EIA RS232 25 pin D type female connector For firmware downloads PEB rated circuit Rear Communications Port K Bus EIA RS 485 signal levels two wire Connections located on general purpose block M4 screw For screened twisted pair cable multidrop 1000 m max Courier protocol SELV rated circuit Optional Second Rear Com...

Page 20: ...d Connector 3 terminals 2NC contacts Rated voltage 250 V Continuous current 5 A Short duration current 30 A for 3 s Breaking capacity DC 50 W resistive DC 25 W resistive AC 1500 VA resistive cos φ unity AC 1500 VA inductive cos φ unity Subject to maxima of 5 A and 250 V Ratings AC Measuring Inputs Nominal frequency 50 and 60 Hz settable Operating range 45 to 65 Hz Phase rotation ABC or ACB AC Curr...

Page 21: ...ed purpose relay outputs for tripping Uses IGBT technology Make and Carry 30 Amps for 3 sec 30A 250V resistive Carry 250 Amps dc for 30ms Continuous Carry 10 Amps dc Break Capacity 10A 250V resistive 10 000 operations 10A 250V L R 40ms Operating time 200µs Reset time 7 5ms Watchdog Contacts Non programmable contacts for relay healthy relay fail indication Breaking capacity DC 30 W resistive DC 15 ...

Page 22: ...lse Voltage Withstand Test Per IEC 60255 27 2005 Front time 1 2 µs Time to half value 50 µs Peak value 5 kV 0 5 J Between all terminals and all terminals and case earth Electromagnetic Compatibility EMC 1 MHz Burst High Frequency Disturbance Test Per IEC 60255 22 1 1988 Class III Common mode test voltage 2 5 kV Differential test voltage 1 0 kV Test duration 2 s Source impedance 200 Ω EIA RS232 por...

Page 23: ...applied continuously 1000 A m applied for 3 s Per IEC 61000 4 9 1993 Level 5 1000 A m applied in all planes Per IEC 61000 4 10 1993 Level 5 100 A m applied in all planes at 100 kHz 1 MHz with a burst duration of 2 s Conducted Emissions Per EN 55022 1998 0 15 0 5 MHz 79 dBµV quasi peak 66 dBµV average 0 5 30 MHz 73 dBµV quasi peak 60 dBµV average Radiated Emissions Per EN 55022 1998 30 230 MHz 40 d...

Page 24: ...ng or 10 mA WIG Min trip level of IDMT elements 1 05 x Setting 5 or 10 mA WIG IDMT characteristic shape 5 or 40 ms WIG under reference conditions IEEE reset 10 or 40 ms WIG DT operation 5 or 50 ms WIG DT reset 5 or 50 ms WIG Transient overreach and overshoot Accuracy Additional tolerance due to increasing X R ratios 5 over the X R ratio of 1 to 90 Overshoot of overcurrent elements 40 ms Programmab...

Page 25: ...ilure Accuracy Reset time 25 ms from start to TBF2 or TBF4 30ms 15 ms from TBF2 or TBF4 30ms to TBF2 or TBF4 2 or 10 ms whichever is greater Thresholds settings 5 or 10 mA Whichever Is Greater Protection functions Global Settings System Data Language English French German Spanish Frequency 50 60 Hz Common conventional ratios CU Primary basis current virtual Ibp 1000A Current transformers PU Phase ...

Page 26: ... 0 00 100 00s step 10ms Dead Zone Earth Disabled Enabled Neutral threshold IN DZ 0 05 4 00 In step 0 01 In Time delay 0 00 100 00 s step 10ms Note In is the CT nominal current Breaker failure protection PU Caution the following current set values are expressed in multiple of the local CT s nominal rated current Inp primary or Ins secondary Breaker Failure 1st phase O C threshold dead pole detectio...

Page 27: ...ocking I 2 87BB P or I 2 87BB N IN 2 Current Set if IN 2 function enabled 0 10 32 00 xIn step 0 01 In If IN 2 function high set I 2 IN 2 Time Delay 0 00 100 00s step 10ms If IN 2 function 87BB P and or N IN 2 Time Delay 0 2 6 00 s step 0 1s CB Control PU Prot Trip Pulse 0 05 2 00s step 10mss Trip Latched Disabled Enabled Rest Trip Latch Yes No CB Control by Disabled Local and or Remote and or Opto...

Page 28: ...to 10 5s Trigger Position 0 100 step 0 1 Trigger Mode Single Extended Analogue Channel 1 up to 4 Digital Input 1 up to 32 Selected binary channel assignment from any DDB status point within the relay opto input output contact alarms starts trips controls logic Sampling frequency 600Hz Communications RP1 Protocol Courier RP1 Address courier 6 34 Inactivity Timer 1 30 minutes RP1 Port Config Courier...

Page 29: ...acts are to be energised when the contact test is applied Static Test Mode Disabled Enabled Opto input voltage range 24 27 V 30 34 V 48 54 V 110 125 V 220 250 V Custom Opto Input 1 up to max opto no fitted Custom options allow independent thresholds to be set per opto from the same range as above Filter Control Opto Input Labels Opto Input 1 up to 8 for P741 16 for P742 24 for P743 User defined te...

Page 30: ...P74x EN TD Na7 Technical Data TD 2 14 MiCOM P741 P742 P743 TD ...

Page 31: ...Getting Started P74x EN GS Na7 MiCOM P741 P742 P743 GS GETTING STARTED Hardware Suffix J and K Software Version 51 ...

Page 32: ...P74x EN GS Na7 Getting Started MiCOM P741 P742 P743 ...

Page 33: ...5 Reading and clearing of alarm messages and fault records 17 1 8 6 Setting changes 18 1 9 Front communication port user interface 18 1 9 1 Front courier port 20 1 10 S1 Agile relay communications basics 20 1 10 1 Off line use of S1 Agile 21 2 CONFIGURING THE ETHERNET INTERFACE 22 2 1 Configuring the Ethernet Interface for IEC 61850 22 3 CONFIGURING THE REDUNDANT ETHERNET BOARD 24 3 1 Configuring ...

Page 34: ...URES FIGURE 1 RELAY FRONT VIEW EXAMPLE FOR P742 40 TE 3 FIGURE 2 RELAY FRONT VIEW EXAMPLE FOR P743 60 TE 4 FIGURE 3 P742 RELAY REAR VIEW 40TE 9 FIGURE 4 P743 RELAY REAR VIEW 60TE 10 FIGURE 5 P741 RELAY REAR VIEW 80TE 10 FIGURE 6 MENU STRUCTURE 12 FIGURE 7 FRONT PANEL USER INTERFACE 15 FIGURE 8 HOTKEY MENU NAVIGATION 17 FIGURE 9 FRONT PORT CONNECTION 19 FIGURE 10 PC RELAY SIGNAL CONNECTION 20 FIGUR...

Page 35: ...nd bottom of the relay shown open Extra physical protection for the front panel can be provided by an optional transparent front cover With the cover in place read only access to the user interface is possible Removal of the cover does not compromise the environmental withstand capability of the product but allows access to the relay settings When full access to the relay keypad is required for ed...

Page 36: ...monitoring and high speed local downloading of software and language text via a parallel data connection FIGURE 2 RELAY FRONT VIEW EXAMPLE FOR P743 60 TE The front panel of the relay includes the following as indicated in Figure 2 a 16 character by 3 line alphanumeric liquid crystal display LCD a 19 key keypad comprising 4 arrow keys and an enter key a clear key a read key 2 hot keys and 10 progra...

Page 37: ...t display Alarm Yellow flashes to indicate that the relay has registered an alarm This may be triggered by a fault event or maintenance record The LED will flash until the alarms have been accepted read after which the LED will change to constant illumination and will extinguish when the alarms have been cleared Out of service Yellow can indicate that the relay s protection is unavailable or a tes...

Page 38: ...LED6 Red LED6 Yellow LED6 Green No Zone 1 blocked by itself Zone 1 blocked by Check Zone Zone 1 protected 7 LED7 Red LED7 Yellow LED7 Green No Zone 2 blocked by itself Zone 2 blocked by Check Zone Zone 2 protected 8 LED8 Red LED8 Yellow LED8 Green No Fiber communication Error Fiber communication to change Fiber communication healthy 9 FnKey LED1 Red FnKey LED1 Yellow FnKey LED1 Green No Zone or CZ...

Page 39: ...d FnKey LED8 Yellow FnKey LED8 Green No Not used Not used Reset PU Trip Latch 17 FnKey LED9 Red FnKey LED9 Yellow FnKey LED9 Green No Not used Not used Manual DR trigger 18 FnKey LED10 Red FnKey LED10 Yellow FnKey LED10 Green No Not used Dead Zone fault Not used Peripheral Unit P742 LED Number LED Input Connection Text Latched P74x LED Function Indication 1 LED 1 Red No Isolator 1 Closed 2 LED 2 R...

Page 40: ...on CU 87BB trip order Not used Not used 6 LED6 Red LED6 Yellow LED6 Green Yes Dead Zone fault Not used Not used 7 LED7 Red LED7 Yellow LED7 Green No Circuit Breaker out of service Not used Circuit Breaker healthy 8 LED8 Red LED8 Yellow LED8 Green No Fiber communication Error Fiber communication to change Fiber communication healthy 9 FnKey LED1 Red FnKey LED1 Yellow FnKey LED1 Green No Not used No...

Page 41: ...10 Red FnKey LED10 Yellow FnKey LED10 Green No Not used 1 2 2 Relay rear panel Examples of the rear panel of the relay are shown in Figures 3 4 and 5 All current signals digital logic input signals and output contacts are connected at the rear of the relay Also connected at the rear is the twisted pair wiring for the rear EIA RS 485 communication port the IRIG B time synchronising input is optiona...

Page 42: ...tting Started GS 3 10 MiCOM P741 P742 P743 GS FIGURE 4 P743 RELAY REAR VIEW 60TE FIGURE 5 P741 RELAY REAR VIEW 80TE Refer to the wiring diagram in the Installation Chapter P74x EN IN for the complete connection details ...

Page 43: ...ee Universal Opto input in the Firmware section for more information on logic input specifications Please note that the opto inputs have a maximum input voltage rating of 300V dc at any setting Once the ratings have been verified for the application connect external power capable of delivering the power requirements specified on the label to perform the relay familiarization procedures Figures 3 4...

Page 44: ...by reference to a row and column address The settings are arranged so that each column contains related settings for example all of the disturbance recorder settings are contained within the same column As shown in Figure 6 the top row of each column contains the heading that describes the settings contained within that column Movement between the columns of the menu can only be made at the column...

Page 45: ... settings There are four groups of protection settings with each group containing the same setting cells One group of protection settings is selected as the active group and is used by the protection elements 1 5 2 Disturbance recorder settings The disturbance recorder settings include the record duration and trigger position selection of analogue and digital signals to record and the signal sourc...

Page 46: ... to change any of the relay settings It is also possible to set the default menu access level to either level 0 or level 1 preventing write access to the relay settings without the correct password The default menu access level is set in the Password control cell which is found in the System data column of the menu note that this setting can only be changed when level 2 access is enabled 1 7 Relay...

Page 47: ...ossible to view the other default display options using the and keys However if there is no keypad activity for the 15 minute timeout period the default display will revert to that selected by the setting and the LCD backlight will turn off If this happens any setting changes that have not been confirmed will be lost and the original setting values maintained Whenever there is an uncleared alarm p...

Page 48: ...d keys can be used to scroll between the available options and the direct access keys can be used to control the function currently displayed If neither the or keys are pressed with 20 seconds of entering a hotkey sub menu the relay will revert to the default display The clear key will also act to return to the default menu from any page of the hotkey menu The layout of a typical page of the hotke...

Page 49: ...tween A and Z To move between the character fields of the password use the and keys The password is confirmed by pressing the enter key The display will revert to Enter Password if an incorrect password is entered At this point a message will be displayed indicating whether a correct password has been entered and if so what level of access has been unlocked If this level is sufficient to edit the ...

Page 50: ... value can be changed This will only happen if the appropriate password has been entered otherwise the prompt to enter a password will appear The setting value can then be changed by pressing the or keys If the setting to be changed is a binary value or a text string the required bit or character to be changed must first be selected using the and keys When the desired new value has been reached it...

Page 51: ...l 25 Way 9 Way Pin no 2 3 2 Rx Receive data Pin no 3 2 3 Tx Transmit data Pin no 5 7 5 0V Zero volts common For successful data communication the Tx pin on the relay must be connected to the Rx pin on the PC and the Rx pin on the relay must be connected to the Tx pin on the PC as shown in Figure 10 Therefore providing that the PC is a DTE with pin connections as given above a straight through seri...

Page 52: ...some of the features of Courier are not implemented These are as follows Automatic Extraction of Event Records Courier Status byte does not support the Event flag Send Event Accept Event commands are not implemented Automatic Extraction of Disturbance Records Courier Status byte does not support the Disturbance flag Busy Response Layer Courier Status byte does not support the Busy flag the only re...

Page 53: ...onfiguration is updated 8 In the Agile Explorer window select Device Supervise Device to control the relay directly 1 10 1 Off line use of S1 Agile S1 Agile can also be used as an off line tool to prepare settings without access to the relay 1 If creating a new system in the Agile Explorer select create new system Then right click the new system and select New substation 2 Right click the new subs...

Page 54: ...face Otherwise you should use the IED configurator tool in MiCOM S1 Agile Note Further information is available in the Communications chapter 2 1 Configuring the Ethernet Interface for IEC 61850 1 Open MiCOM S1 Agile 2 Select Tools IEC61850 IED Configurator 3 Select Device Manage IED 4 Select Px40 5 Enter the address of the IED you want to manage this will always be 1 if you are connected via the ...

Page 55: ...MiCOM P741 P742 P743 GS 3 23 GS 8 Select the model The IP address data is then revealed 9 To change the address values select View Enter Manual Editing Mode 10 Enter the required IP configuration and select the green download button ...

Page 56: ...IED AND REB IP ADDRESS CONFIGURATION 3 1 Configuring the IED IP Address The IP address of the IED is configured using the IED Configurator software in S1 Agile For IEC 61850 the IED IP address is set using the IED Configurator There are 254 addresses available which are configurable in the last octet These are within the range 01 to 254 decimal which is equivalent 01 to FE hexadecimal or 00000001 ...

Page 57: ...hould ideally take place before the unit is installed If this is not possible this must be carried out by authorized installation engineers 3 3 RSTP Configuration If you are using RSTP you will need the RSTP configurator software This is available from GE on request The RSTP Configurator software is used to identify a device configure the IP address configure the SNTP IP address and configure RSTP...

Page 58: ... of the firmware SNTP IP address Date time of the real time clock from the board Note Due to the time needed to establish the RSTP protocol it is necessary to wait 25 seconds between connecting the PC to the IED and clicking the Identify Device button IP Address Configuration 1 To change the network address component of the IP address go to the main window and click the IP Config button The Device...

Page 59: ...w and click the Identify Device button The selected device MAC address then appears highlighted 2 Click the Equipment button The list of MAC addresses learned by the switch and the corresponding port number are displayed RSTP Parameters 1 To view or configure the RSTP Bridge Parameters go to the main window and click the device address to select the device The selected device MAC address appears h...

Page 60: ... go to the main window and click the device address to select the device The RSTP Config window appears and the default tab is Bridge Parameters 2 Click the Get RSTP Parameters button This displays all the RSTP bridge parameters from the Ethernet board 1 To modify the RSTP parameters enter the values and click Set RSTP Parameters 2 To restore the default values click Restore Default and click Set ...

Page 61: ...see which ports of the board are enabled or disabled 1 From the main window click the device address to select the device The RSTP Config window appears 2 Select the Port States tab then click the Get Port States button This lists the ports of the Ethernet board A tick shows they are enabled ...

Page 62: ... IEDs can be connected to one spur It is therefore necessary for each IED to have a unique address so that messages from the master control station are accepted by one IED only Courier uses an integer number between 0 and 254 for the IED address It is important that no two IEDs have the same address COMMUNICATIONS RP1 Address 255 5 Move down to the next cell RP1 InactivTimer This cell controls the...

Page 63: ...s to turn GOOSE on or off 4 3 IEC 61850 Configuration You cannot configure the device for IEC 61850 using the HMI panel on the product For this you must use the IED Configurator IEC 61850 allows IEDs to be directly configured from a configuration file The IED s system configuration capabilities are determined from an IED Capability Description file ICD supplied with the product By using ICD files ...

Page 64: ...s is also available using the IED CONFIGURATOR column of the HMI The SCL Name and Revision attributes of both configuration banks are also available in the IED CONFIGURATOR column of the HMI 4 3 2 IEC 61850 Network Connectivity Configuration of the IP parameters and SNTP time synchronization parameters is performed by the IED Configurator tool If these parameters are not available using an SCL fil...

Page 65: ...verter IED Ethernet switch TXA Media Converter RJ45 V01806 RXA TXB RXB RXA TXA RXB TXB TX RX a b IED RXA TXA RXB TXB FIGURE 13 CONNECTION USING A AN ETHERNET SWITCH AND B A MEDIA COVER 5 2 Installing the Configurator To install the configurator 1 Double click the WinPcap installer 2 Double click the Configurator installer 3 Click Next and follow the on screen instructions 5 3 Starting the Configur...

Page 66: ...m the main window click the IP Config button The Device setup screen appears 2 Enter the required board IP address and click OK This is the redundancy network address not the IEC 61850 IP address 3 The board network address is updated and displayed in the main window 5 7 SNTP IP Address Configuration To Configure the SNTP server IP address 1 From the main window click the SNTP Config button The De...

Page 67: ...fe Check Interval This defines how often a node sends a PRP_Supervision frame All DANPs must be configured with the same Life Check Interval Proxy Node Table Forget Time This is the time after which a node entry is cleared in the ProxyTable Proxy Node Table Max Entries This is the maximum number of entries in the ProxyTable Entry Forget Time This is the time after which an entry is removed from th...

Page 68: ... Limit 5 Click the Create button The new entry appears in the forwarding database To delete an entry from the forwarding database select the entry and click the Delete Entry button Goose Filtering tab This page configures the source MACs from which GOOSE messages will be allowed or blocked The filtering can be configured by either the MAC address range boxes or by selecting or unselecting the indi...

Page 69: ...Settings P74x EN ST Na7 MiCOM P741 P742 P743 ST SETTINGS Hardware Suffix J and K Software Version 51 ...

Page 70: ...P74x EN ST Na7 Getting Started MiCOM P741 P742 P743 ...

Page 71: ...Directional Earth Fault Overcurrent Protection and External Fault Detection by High Set Overcurrent Earth Fault menu P742 P743 20 1 2 7 Circuit breaker fail and undercurrent function CB Fail column P742 P743 21 1 2 8 CT Supervision Supervision menu 22 1 3 Control and support settings 23 1 3 1 Circuit breaker control CB Control column P742 P743 23 1 3 2 CT and VT ratios column P742 P743 24 1 3 3 Re...

Page 72: ...P74x EN ST Na7 Settings ST 4 2 MiCOM P741 P742 P743 ST ...

Page 73: ...tings cell A protection setting group can also be disabled in the configuration column provided it is not the present active group Similarly a disabled setting group cannot be set as the active group The column also allows all of the setting values in one group of protection settings to be copied to another group To do this firstly set the Copy from cell to the protection setting group to be copie...

Page 74: ...lays the status of opto inputs Relay O P Status 00000000 Duplicate Displays the status of output relays Alarm Status 1 00000000000000000000000000000000 32 bits field give status of first 32 alarms refer to P74x EN MR for alarm list Alarm Status 2 00000000000000000000000000000000 Next 32 alarm status defined Alarm Status 3 00000000000000000000000000000000 Next 32 alarm status defined Assigned speci...

Page 75: ... cannot be altered Serial Number 6 digits 1 letter Relay model number This display cannot be altered Frequency 50Hz 50Hz 60Hz 10Hz Relay set frequency Settable between 50 and 60Hz Comms Level 2 Displays the conformance of the relay to the Courier Level 2 comms Relay Address 255 7 34 1 Sets the front and first rear port relay address from 7 Plant Status 0000000000000000 Displays the circuit breaker...

Page 76: ...tform alarms Access Level 2 Displays the current access level Level 0 No password required Read access to all settings alarms event records and fault records Level 1 Password 1 or 2 required As level 0 plus Control commands e g circuit breaker open close Reset of fault and alarm conditions Reset LEDs Clearing of event and fault records Level 2 Password 2 required As level 1 plus All other settings...

Page 77: ...on menu visible further on in the relay settings menu Diff Busbar Prot Enabled Enabled or Disabled To enable activate or disable turn off the Differential Busbar Protection function ANSI 87BB Input Labels Visible Invisible or Visible Sets the Input Labels menu visible further on in the relay settings menu Output Labels Visible Invisible or Visible Sets the Output Labels menu visible further on in ...

Page 78: ...re blocked not accepted by the relay for Rear Port 1 RP2 Read Only Disabled Enabled or Disabled If this Read Only mode is enabled then all setting changes and most command control actions are blocked not accepted by the relay for Rear Port 2 when option available NIC Read Only Disabled Enabled or Disabled If this Read Only mode is enabled then all setting changes and most command control actions a...

Page 79: ...sabled Enabled Disabled To enable activate or disable turn off the Earth Overcurrent Protection function ANSI 50N 51N CB Fail I Disabled Enabled Disabled To enable activate or disable turn off the Circuit Breaker Fail Protection functions ANSI 50BF Input Labels Visible Visible Invisible Sets the Input Labels menu visible further on in the relay settings menu Output Labels Visible Visible Invisible...

Page 80: ...sible Invisible or Visible P741 P743 only Sets the Function Key menu visible further on in the relay setting menu RP1 Read Only Disabled Enabled or Disabled If this Read Only mode is enabled then all setting changes and most command control actions are blocked not accepted by the relay for Rear Port 1 RP2 Read Only Disabled Enabled or Disabled If this Read Only mode is enabled then all setting cha...

Page 81: ...blocked by a circuitry fault Circ Fault Phase Phase A or B or C or N Faulty phase that blocks by a circuitry fault the zone Reset PU Error No Yes or No After a PU communication error has been detected the user can accept and clear the error using the command from this cell The command will NOT be rejected if the fault is still present PU Error Locked 00000000 Live values List of the zones blocked ...

Page 82: ...be maintained Time synchronisation from any interface will be used to directly set the master clock and all displayed or read times on all interfaces will be based on the master clock with no adjustment Fixed A local time zone adjustment can be defined using the LocalTime offset setting and all interfaces will use local time except SNTP time synchronisation and IEC61850 timestamps Flexible A local...

Page 83: ...e month in which daylight saving time adjustment ends DST End Mins 60 0 1425 15min Setting to specify the time of day in which daylight saving time adjustment ends This is set relative to 00 00 hrs on the selected day when time adjustment is to end RP1 Time Zone Local UTC or Local Setting for the rear port 1 interface to specify if time synchronisation received will be local or universal time coor...

Page 84: ...sitive faults which are used for all zones and the check zone independently 1 2 1 1 Differential phase fault Configuration Menu Text Default Setting Setting Range Step Size Min Max DIFF BUSBAR PROT Diff Phase Fault Diff busbar protection menu first part CZ Parameters Phase slope kCZ 30 0 90 1 Slope angle setting for the check zone biased differential element IDCZ 2 Current 1200 A 50 A 30 000 A 10 ...

Page 85: ...etermines the Earth fault element blocking characteristic CZ Parameters Earth Slope kNCZ 10 0 90 1 Slope angle setting for the check zone biased differential Earth element IDNCZ 2 Current 1200 A 10 A 30 000 A 10 A Setting that determines the minimum differential operating current for the check zone biased differential Earth element Zone Parameters Earth Slope kN2 10 0 90 1 Slope angle setting for ...

Page 86: ...blocking disappears as soon as the CZ calculation is right but the alarm disappears only after manual reset Blocking Latched The CZ blocks any zone trip and both the blocking and the alarm disappear only after manual reset Zx Circ Flt Mode Blocking Latched Self Reset Alarm Latched Blocking Latched Alarm NoBlock AlmSR NoBlck Zone x Circuitry Fault Options for all the Zones differential element faul...

Page 87: ...lation is right Alarm No Block Alarm and No blocking The CZ does not block any zone trip and the alarm disappears only after manual reset Self Reset The CZ blocks any zone trip and both the blocking and the alarm disappear as soon as the CZ calculation is right Alarm Latched The CZ blocks any zone trip the blocking disappears as soon as the CZ calculation is right but the alarm disappears only aft...

Page 88: ...onfirm a phase differential busbar protection 87BB trip when Delay Trip Status is enabled This delay time must be shorter than the time delay of phase circuitry fault monitoring DIFF BUSBAR PROT ID 1 Alarm timer menu Diff Display Min 0A 0A 500A 10A Sets a minimum threshold to display a differential current Measurement column When the differential current is less than this threshold on the 3 phases...

Page 89: ...tings apply to all three phases but are independent for each of the four stages The first stage of overcurrent protection has time delayed characteristics which are selectable between inverse definite minimum time IDMT or definite time DT The second stage has definite time characteristics only Menu Text Default Setting Setting Range Step Size Min Max Overcurrent I 1 Function Disabled Disabled DT I...

Page 90: ...3s 0 2s 6s 0 1s Adjusts the differential busbar protection 87BB blocking function during drop off time from 200ms to 6s 1 2 6 Non Directional Earth Fault Overcurrent Protection and External Fault Detection by High Set Overcurrent Earth Fault menu P742 P743 The P742 and P743 relays include extra or backup non directional earth fault protection The earth fault element has two stages of protection Th...

Page 91: ...idden The overcurrent can be used as high set overcurrent to block the 87BB protection for phase and earth fault element 87BBO N blocking only the 87BB phase element 87BB P blocking only the 87BB SEF element 87BB N blocking or a combination of the different functions ΙN 2 Current Set 20 00 Ιn 0 10 Ιn 32 00 Ιn 0 01 Ιn Pick up setting for the second stage earth fault element ΙN 2 Time Delay 1 00s 0 ...

Page 92: ...ated by an external trip order or integrated overcurrent CB Fail Timer 3 0 05 s 0 00 s 10 00 s 0 01 s Setting to enable or disable the first stage of the circuit breaker function initiated externally CB Fail Timer 4 0 20 s 0 00 s 10 00 s 0 01 s Setting to enable or disable the second stage of the circuit breaker function inititated externally 1 2 8 CT Supervision Supervision menu The CT Supervisio...

Page 93: ...ent settings Communications settings Commissioning settings Opto inputs and control inputs settings When present InterMiCOM communication and configuration settings User interface function keys control input labels settings 1 3 1 Circuit breaker control CB Control column P742 P743 The relay includes the following options for control of a single circuit breaker Local tripping and closing via the re...

Page 94: ... Superv Timer 1 3 2 CT and VT ratios column P742 P743 This column is visible when the CT VT ratios setting Configuration column visible Menu Text Default Setting Setting Range Step Size Min Max CT AND VT RATIOS Phase CT Primary 1 000A 1A 30kA 1 Sets the phase Current Transformer input primary current rating Phase CT Sec y 1 000A 1 5 4 Sets the phase Current Transformer input secondary current rati...

Page 95: ...figuration column visible Menu Text Default Setting Setting Range Step Size Min Max RECORD CONTROL Menu Text Default Setting Available Settings Clear Event No No or Yes Selecting Yes will cause the existing event log to be cleared and an event will be generated indicating that the events have been erased Clear Faults No No or Yes Selecting Yes will cause the existing fault records to be erased fro...

Page 96: ...111111111 Displays the status of DDB signals2016 2047 1 3 4 Measurements Measure t setup column This column is visible when the Measure t Setup setting Configuration column visible Menu Text Default Setting Setting Range Step Size Min Max MEASUREMENT SETUP Default Display Description Description Plant Reference Idiff CZ Ibias CZ Date and Time This setting can be used to select the default display ...

Page 97: ...he rear port before it reverts to its default state including resetting any password access that was enabled RP1 Card Status Data K Bus OK EIA485 OK This cell indicates the status of the rear communication board RP1 Port Config KBus KBus or EIA RS 485 This cell defines whether an electrical KBus or EIA RS 485 is being used for communication between the master station and relay RP1 Comms Mode IEC60...

Page 98: ...e second rear port which is only available with the courier protocol Menu Text Default Setting Setting Range Step Size Min Max COMMUNICATIONS RP2 Protocol Courier Indicates the communications protocol that will be used on the rear communications port RP2 Card Status data Unsupported Card Absent IEC60870 on RS232 OK IEC60870 on RS485 OK or KBus OK This cell indicates the status of the rear communic...

Page 99: ... a 0 a de energized one Relay O P Status 00000000 This menu cell displays the status of the digital data bus DDB signals that result in energisation of the output relays as a binary string a 1 indicating an operated state and 0 a non operated state When the Test Mode cell is set to Enabled the Relay O P Status cell does not show the current status of the output relays and hence can not be used to ...

Page 100: ...for operation set to 1 in the Test Pattern cell change state After the test has been applied the command text on the LCD will change to No Operation and the contacts will remain in the Test State until reset issuing the Remove Test command The command text on the LCD will again revert to No Operation after the Remove Test command has been issued Note When the Test Mode cell is set to Enabled the R...

Page 101: ...the status of DDB signals 0 31 DDB 2047 2016 11111111111111111111111111111111 Displays the status of DDB signals 2016 2047 1 3 6 2 P742 and P743 Menu Text Default Setting Available Settings COMMISSION TESTS Opto I P Status 000000000000000000000000 This menu cell displays the status of the relay s opto isolated inputs as a binary string a 1 indicating an energized opto isolated input and a 0 a de e...

Page 102: ...e when Test Mode is disabled When the Apply Test command in this cell is issued the contacts set for operation set to 1 in the Test Pattern cell change state After the test has been applied the command text on the LCD will change to No Operation and the contacts will remain in the Test State until reset issuing the Remove Test command The command text on the LCD will again revert to No Operation a...

Page 103: ...cted then each opto input can individually be set to a nominal voltage value Opto Input 1 48 54V 24 27V 30 34V 48 54V 110 125V 220 250V Each opto input can individually be set to a nominal voltage value if custom is selected for the global setting Opto Input 2 8 P741 Opto Input 2 16 P742 Opto Input 2 24 P743 48 54V 24 27V 30 34V 48 54V 110 125V 220 250V Each opto input can individually be set to a...

Page 104: ... and will then reset automatically i e no reset command required Ctrl Command 1 Set Reset Set Reset In Out Enabled Disabled On Off Allows the SET RESET text displayed in the hotkey menu to be changed to something more suitable for the application of an individual control input such as ON OFF IN OUT etc Control Input 2 to 32 Latched Latched Pulsed Configures the control inputs as either latched or ...

Page 105: ...the correct message structure Rx Block Count Data Number of Blocking messages received with the correct message structure Rx NewDataCount Data Number of different messages received Rx ErroredCount Data Number of incomplete or incorrectly formatted messages received Lost messages Data Number of messages lost within the previous time period set in Alarm Window cell Elapsed Time Data Time in seconds ...

Page 106: ...eive pins together and ensure that the DCD signal is held high Test pattern 11111111 00000000 11111111 A test pattern can be entered which is then transmitted through the software and or hardware Loopback Status Providing all connections are correct and the software is working correctly the Loopback Status cell will display OK An unsuccessful test would be indicated by FAIL whereas a hardware erro...

Page 107: ...assign the known default value to the relay IM2 to IM8 Cmd type As IM1 Cmd Type Note Setting choices ere diffrent from IM2 to IM8 see IM1 Cmd type When Cmd Type is enabled Fallback Mode is enabled Default values and frameSync type are settable when fallback mode selection is latched 1 3 11 Function keys menu P741 P743 Available in the Central Unit P741 and the Peripheral Unit P743 Menu Text Defaul...

Page 108: ...the configuration sent to and held in the Inactive Memory Bank Restore MCL No action No action Restore MCL Used to restore data from MCL binary file MCL MiCOM Configuration Language files are ALSTOM Grid specific containing a single devices IEC61850 configuration information and used for transferring data to from the IED Active Conf Name Data The name of the configuration in the Active Memory Bank...

Page 109: ...ssage for example for testing or commissioning The setting enables 1 or disables 0 test mode for GOOSE control block from 08 1st digit to 01 last digit Once testing is complete the cell must be set back to Disabled to restore the GOOSE scheme back to normal service Ignore Test Flag No No Yes When set to Yes the test flag in the subscribed GOOSE message is ignored and the data treated as normal 1 3...

Page 110: ...recording times Trigger Mode Single Single extended If set to single mode if a further trigger occurs whilst a recording is taking place the recorder will ignore the trigger However if this has been set to Extended the post trigger timer will be reset to zero thereby extending the recording time Analog Channel 1 IA diff Non settable The Phase A differential calculated current is assigned to this c...

Page 111: ...ed Topology or setting changed digital channel Digital input 14 Trip Manual zone Manual trip of the zone digital channel Digital input 15 Trip 50BF zone 1 Trip 50BF zone 1 digital channel Digital input 16 Trip 50BF zone 2 Trip 50BF zone 2 digital channel Digital input 17 Trip 87BB zone 1 Trip 87BB zone 1 digital channel Digital input 18 Trip 87BB zone 2 Trip 87BB zone 2 digital channel Digital inp...

Page 112: ...t is assigned to this channel The following lines give the default settings for analog channels 2 to 4 Menu Text Default Setting Explanation Analog Channel 2 IB Phase B analogue current input Analog Channel 3 IC Phase C analogue current input Analog Channel 4 IN Neutral analogue current input Menu Text Default Setting Setting Range Step Size Min Max DISTURB RECORDER Digital Input 1 Field Volt Fail...

Page 113: ...11 Internal Trip Internal Trip digital channel Input 11 trigger Trigger L H Digital input 12 Q1 Closed Isolator 1 closed digital channel Input 12 trigger No Trigger Digital input 13 Q2 Closed Isolator 2 closed digital channel Input 13 trigger No Trigger Digital input 14 Q3 Closed Isolator 3 closed digital channel Input 14 trigger No Trigger Digital input 15 Man Trip zone Manual Trip of the zone di...

Page 114: ...ger Trigger L H Digital input 23 Trip 87BB Trip 87BB digital channel Input 23 trigger Trigger L H Digital input 24 to 32 Unused The digital channels may be mapped to any of the opto isolated inputs or output contacts in addition to a number of internal relay digital signals such as protection starts LEDs etc ...

Page 115: ...Operation P74x EN OP Na7 MiCOM P741 P742 P743 OP OPERATION Hardware Suffix J and K Software Version 51 ...

Page 116: ...P74x EN OP Na7 Operation MiCOM P741 P742 P743 ...

Page 117: ...25 1 5 Earth Fault Protection 26 1 5 1 EF time delay characteristics 26 1 5 2 External Fault Detection by High Set Overcurrent or Earth Fault Element 26 1 5 3 Supervision 26 1 5 4 Zero Sequence Current ΙO Supervision 26 1 5 5 CT Supervision 27 1 5 6 InterMiCOM teleprotection introduction 27 1 5 7 EIA RS 232 InterMiCOM MODEM InterMiCOM 29 1 5 8 InterMiCOM statistics diagnostics 33 2 CURRENT TRANSFO...

Page 118: ...GURE 9 CB FAIL LOGIC DDB INPUTS OUTPUTS 21 FIGURE 10 CB FAIL ELEMENT LOGIC INTERNALLY INITIATED 22 FIGURE 11 CIRCUIT BREAKER FAILURE LOGIC 23 FIGURE 12 EXAMPLES 23 FIGURE 13 CB FAIL ELEMENT LOGIC EXTERNALLY INITIATED 24 FIGURE 14 CT SUPERVISION 27 FIGURE 15 PICTORIAL COMPARISON OF OPERATING MODES 29 FIGURE 16 DIRECT CONNECTION WITHIN THE LOCAL SUBSTATION 31 FIGURE 17 InterMiCOM TELEPROTECTION VIA ...

Page 119: ...P741 P742 P743 OP 5 3 OP FIGURE 28 REMOTE CONTROL OF CIRCUIT BREAKER 40 FIGURE 29 MODULE INTERCONNECTION 43 FIGURE 30 TRIP LED LOGIC DIAGRAM 44 FIGURE 31 CB CONTROL HOTKEY MENU 46 FIGURE 32 CB CONTROL VIA FUNCTION KEYS DEFAULT PSL 46 ...

Page 120: ...P74x EN OP Na7 Operation OP 5 4 MiCOM P741 P742 P743 OP ...

Page 121: ...tection is based on the application of Kirchhoff s law This compares the amount of current entering and leaving the protected zone and the check zone Under normal operation the amount of current flowing into the area and the check zone concerned is equal in to the amount of the current flowing out of the area Therefore the currents cancel out In contrast when a fault occurs the differential curren...

Page 122: ...l faults where the scheme has current transformers with differing characteristics likely to provide differing performance The algorithm operands are as follows Differential Current idiff t Σ i Bias or Restraining current ibias t Σ i Slope of the bias characteristic kx Tripping permitted by bias element for idiffx t kx x ibias t The main differential current element of P74x will only be able to ope...

Page 123: ...ra fast innovative algorithm based on the prediction of the next samples and the calculation of the image of the flux of the HV CT core This signal processing algorithm makes it possible to block a trip sample within a window of 1 7 ms A timer Block Duration of 150 ms is used to block the differential element in case of CT saturation detection 1 2 2 Scheme supervision by check zone element For sec...

Page 124: ...ting which crosses the set slope of the bias characteristic kCZ Ibias KN2 Percentage bias setting slope for the zone kNCZ Percentage bias setting slope for the check zone The current control and blocking matrix is shown in figure 3 FIGURE 3 SENSITIVE EARTH FAULT CHARACTERISTIC This element is automatically enabled disabled via the load flowing current The point at which the sensitive earth fault p...

Page 125: ...to react to the fault and issue a trip command accordingly For an external phase to phase fault the SDEF will be disabled via the blocking order The sensitive differential earth fault protection is delayed by 20ms to prevent any maloperation during CT saturation condition Important note SDEF should only be used when all the CTs are of the same standard 1 2 4 Threshold coherency The measuring eleme...

Page 126: ...on When a trip is issued for a bus zone by the central unit a signal is sent to all peripheral units associated or not with the faulted bus zone The peripheral units associated with the faulted zone can carry out a further local confirmation via local Overcurrent protection I BB or IN BB before allowing a trip to take place 1 2 6 Tripping Criteria Before a trip signal is issued 4 trip criterions a...

Page 127: ... from the 87BB fault for the 87BB protection Backtrip signals coming from the PU or opto inputs in the CU for the 50BF protection 1 2 8 Current Circuit Supervision During normal operation the differential current in the scheme should be zero or negligible Any anomaly is detected via a given threshold ID 1 A biased differential element is used to supervise the current circuit A differential current...

Page 128: ...E IN CASE OF THROUGH FAULT DURING A CIRCUITRY FAULT The selection of AlarmSR No Blck or Alarm No Block modes is effective only if no blocking zone is selected for Check zone circuitry fault CZ When AlarmSR No Blck or Alarm No Block setting is selected the protection will trip the related zone in case of an external trip 1 2 8 1 2 Options for a PU error mode When something happens on the Peripheral...

Page 129: ... Alarm Self Reset and No blocking An alarm is provided The Check Zone is not blocked These 2 options allow operation of the other zones in case of internal fault during a circuitry fault in the Check Zone 1 2 8 2 2 Options for a PU error mode There are 5 options 1 Blocking Latched An alarm is provided and this alarm can only be reset manually The zone is blocked and this blocking can only be reset...

Page 130: ...itching an OR gate between the 2 voltage criteria from the different bus sections is used to confirm the fault detection Example FIGURE 5 VT s CONNECTED TO THE BAR s AND THE CENTRAL UNIT When the isolator bus sections are open o The faults in zone 1a are confirmed by the VT connected to the bus section 1a o The faults in zone 1b are confirmed by the VT connected to the bus section 1b When the isol...

Page 131: ... phase overcurrent function or on the IN 2 high set neutral overcurrent function each with the following options Phase and earth fault element 87BBP N blocking Only the 87BB phase element 87BB P blocking Only the 87BB SEF element 87BB N blocking A combination of the different functions I 2 87BBP N I 2 87BB P I 2 87BB N The 87BB blocking function have a settable drop off timer from 200ms to 6s by s...

Page 132: ...rt circuit on the concerned feeder This confirmation is provided by the I threshold which is set by default at 1 2 times the nominal rated current of the CT and or by the threshold setting of residual current IN set by default to 0 2 times the rated current 1 3 3 2 2 Undercurrent reset Criterion The criterion normally used for the detection of a circuit breaker pole opening is the disappearance of...

Page 133: ...z 20ms at 60Hz For the last 30ms before the end of the stage 2 timer the DC component should have disappeared so that the time between two successive zero crossings should be close to one half period Moreover it is important to detect the opening of the circuit breaker quickly because the end of the back trip timer is near The drop off duration is therefore equal to one half period 3ms 13ms at 50H...

Page 134: ...owing on the rise of current in each half cycle the pulse timer is retriggered This sequential retriggering ensures that current is detected The detection of breaker opening is made upon one of two scenarios 1 The current falls below the instantaneous detection threshold and does not rise again before the pulse timer expires or 2 A CT current ringdown does not change sign and remains in one polari...

Page 135: ...Internally initiated CBF i e Initiation from the differential element 87BB trip issued by the Central Unit Externally initiated for example by the feeder protection but using the busbar protection s integral 50BF protection to execute tripping procedure Separate 50BF protection to the busbar protection such as a P821 The breaker failure logic uses fast acting undercurrent elements to provide the r...

Page 136: ...P74x EN OP Na7 Operation OP 5 20 MiCOM P741 P742 P743 OP FIGURE 8 CB FAIL LOGIC ...

Page 137: ...ection 87BB or 50BF but not executed due to a circuit breaker failure condition the following circuit breakers are required to be tripped instead All the circuit breakers in the adjacent busbar zone if the faulty circuit breaker is that of a bus coupler or bus section Optional The remote end circuit breaker if the faulty circuit breaker is that of a feeder line or transformer This intertripping is...

Page 138: ... and external protection initiation I trigger the first breaker failure timer tBF1 This signal in turn is passed through an AND gate with the signal from the local Overcurrent protection for busbar protection I BB if a circuit breaker failure condition has evolved this will still be present and a re trip command is issued Re trip output contacts should be assigned using the PSL editor including in...

Page 139: ... P742 P743 OP 5 23 OP Other Protection P3758ENa BB1 Trip Order 1 PU 50BF PU 50BF CU 87BB PU 50BF CB Failed 2 Main Trip or Retrip Back Trip CB Fail signal 3 Back Trip Order 4 BB2 FIGURE 11 CIRCUIT BREAKER FAILURE LOGIC FIGURE 12 EXAMPLES ...

Page 140: ...l re trip activated deactivated via PSL The relay used for this function can use the same fixed logic for the busbar protection or other independent relays A re trip can be applied after a time tBF3 This is typically set at 50ms when a single phase trip and re trip is used This prevents loss of phase selectivity by allowing the main protection trip to execute via the main CB trip coil before re tr...

Page 141: ... choice of four IEC UK and five IEEE US curves as shown in the table below The IEC UK IDMT curves conform to the following formula α L K T t 1 Is I The IEEE US IDMT curves conform to the following formula α L K 7 TD t 1 Is I Where t Operation time K Constant Ι Measured current ΙS Current threshold setting α Constant L ANSI IEEE constant zero for IEC UK curves T Time Multiplier Setting for IEC UK c...

Page 142: ...able time delay These time delays are identical to those of the Phase Overcurrent time delay The reset time delay is the same as the Phase overcurrent reset time 1 5 2 External Fault Detection by High Set Overcurrent or Earth Fault Element An ultra high speed detection is carried out by each of the peripheral units P742 and P743 and can generate a blocking signal from the moment of the first sampl...

Page 143: ...ass of analogue input when a separate neutral CT is made available Failure of an analogue channel e g A D converter failure Once detected the alarm will be issued after a user settable time delay Alarm Delay TCE Because the Peripheral Units sample at 2400Hz discrepancies between the measured and derived values are identified and responded to very quickly If any anomaly arises for either of the abo...

Page 144: ...d utility practice 1 5 6 2 Definition of teleprotection commands The decision to send a command is made by a local protective relay operation and three generic types of InterMiCOM signal are available Intertripping In intertripping direct or transfer tripping applications the command is not supervised at the receiving end by any protection relay and simply causes CB operation Since no checking of ...

Page 145: ... Direct trip command will be considered valid and executed only after 2 consecutive received commands two consecutive messages in agreement instead of just one 1 5 7 EIA RS 232 InterMiCOM MODEM InterMiCOM 1 5 7 1 Communications media InterMiCOM is capable of transferring up to 8 commands over one communication channel Due to recent expansions in communication networks most signaling channels are n...

Page 146: ...checking and for Direct Intertrip commands an 8 bit Cyclic Redundancy Check CRC is also performed This CRC calculation is performed at both the sending and receiving end relay for each message and then compared in order to maximize the security of the Direct Intertrip commands Most of the time the communications will perform adequately and the presence of the various checking algorithms in the mes...

Page 147: ...ed 7 RTS Ready To Send is permanently tied high by the hardware since InterMiCOM requires a permanently open communication channel 8 Not used 9 Not used Depending upon whether a direct or modem connection between the two relays in the scheme is being used the required pin connections are described below 1 5 7 4 Direct connection The EIA RS 232 protocol only allows for short transmission distances ...

Page 148: ...h settings are made on the relay to control the mode of the intertrip signals it is necessary to assign InterMiCOM input and output signals in the relay Programmable Scheme Logic PSL if InterMiCOM is to be successfully implemented Two icons are provided on the PSL editor of S1 for Integral tripping In and Integral tripping out which can be used to assign the 8 intertripping commands The example sh...

Page 149: ...o InterMiCOM commands initiated at the remote end InterMiCOM is thus suitable for teleprotection schemes requiring Duplex signaling 1 5 8 InterMiCOM statistics diagnostics It is possible to hide the channel diagnostics and statistics from view by setting the Ch Statistics and or Ch Diagnostics cells to Invisible All channel statistics are reset when the relay is powered up or by user selection usi...

Page 150: ...e detection of variation of current The PU calculates the derived current and compares it to the magnitude of the waveform With 2400Hz sampling maximum variation between 2 successive samples of sinusoidal current can not exceed 14 of the previous period s magnitude FIGURE 19 CURRENT VARIATION The magnitude of the current is the maximum value of the current measure during the last period with a min...

Page 151: ...n figure 21 FIGURE 21 DETERMINATION OF SIGNAL QUALITY IN PERIPHERAL UNIT CT saturation detection starts at the first variation of current detected and stop if there is no variation during 100ms The third algorithm blocks the occurrence of saturation for as long as the current increases during the first half cycle Blocking starts upon detection of the first current variation Then as soon as the cur...

Page 152: ...ected after a variation of current detection of a presumption of maximum flux and current reversal as shown figure 23 When CT saturation appears a blocking order is sent to the CU to block all zones the check zone is blocked FIGURE 23 CT SATURATION RESET FIGURE 24 CT SATURATION ...

Page 153: ...transformers must be defined correctly to ensure the correct operation of the protection A suggested current transformer location is to position the current transformer for the busbar protection line side of the circuit breaker whilst the line protection current transformers are positioned busbar side of the circuit breaker This then covers the largest possible busbar zone providing an overlap wit...

Page 154: ... a discrepancy alarm will be possible 89A and 89B inputs are assigned to relay opto isolated inputs via the PSL When only one status information can be wired to a Peripheral Unit it is recommended to use the 89B open and link it inversed through a NAND gate or an NOR gate to the Isolator closed position in the PSL 3 2 Circuit Breaker State Monitoring Features MiCOM relays can be set to monitor nor...

Page 155: ...ate Detected is Breaker Open In all others cases the position closed will be used to calculate the topology CB auxiliary contacts and Manual CB closed command are definitely required for all bus sections and bus couplers They are not definitely required for feeders but if the information is supplied to the scheme better operation is possible Dead Zone fault the CB position is required send remote ...

Page 156: ...trol and protection tripping This enables the control outputs to be selected via a local remote selector switch as shown below Where this feature is not required the same output contact s can be used for both protection and remote tripping FIGURE 28 REMOTE CONTROL OF CIRCUIT BREAKER The following table is taken from the relay menu and shows the available settings and commands associated with circu...

Page 157: ...Pulse settings respectively These should be set long enough to ensure the breaker has completed its open or close cycle before the pulse has elapsed Note The manual close commands for each user interface are found in the System Data column of the menu If an attempt to close the breaker is being made and a protection trip signal is generated the protection trip command overrides the close command I...

Page 158: ...fitted the satellite clock equipment should be energised In the event of the auxiliary supply failing with a battery fitted in the compartment behind the bottom access cover the time and date will be maintained Therefore when the auxiliary supply is restored the time and date will be correct and not need to be set again The P741 synchronises all peripheral units P742 P743 every 10s and during the ...

Page 159: ...del number digits 12 13 When a PU with a not compatible model number and software reference is connected to a Central Unit the CU will not recognise the PU and will show the Locking Level 2 Error and alarm 5 1 Communications link The following communication media is used for the communication channel within the P74x scheme The data rate is 2 5 Mbits sec 5 2 Direct optical fibre link 850nm multi mo...

Page 160: ... margin of 3dB is also included in the above table This allows for degradation of the fibre as a result of ageing and any losses in cable joints The remainder of the losses will come from the fibre itself The figures given are typical only and should only be used as a guide 5 3 1 Main operating features 5 3 1 1 Operation modes 5 4 Trip LED logic The trip LED can be reset when the flags for the las...

Page 161: ...vating or deactivating critical relay functions The Fn Key Labels cell makes it possible to change the text associated with each individual function key This text will be displayed when a function key is accessed in the function key menu or it can be displayed in the PSL The status of the function keys is stored in battery backed memory In the event that the auxiliary supply is interrupted the sta...

Page 162: ...ll to enable this functionality All CB manual control settings and conditions will apply for manual tripping and closing via function keys The following default logic can be programmed to activate this feature FIGURE 32 CB CONTROL VIA FUNCTION KEYS DEFAULT PSL Function key 2 and function key 3 are both enabled and set to Normal Mode and the associated DDB signals DDB 677 and DDB 678 will be active...

Page 163: ...ation Set Reset Control Input 2 to 32 No Operation No Operation Set Reset The Control Input commands can be found in the Control Input menu In the Ctrl Ι P status menu cell there is a 32 bit word which represent the 32 control input commands The status of the 32 control inputs can be read from this 32 bit word The 32 control inputs can also be set and reset from this cell by setting a 1 to set or ...

Page 164: ...e need to enter the CONTROL INPUTS column The Ctrl Command cell also allows the SET RESET text displayed in the hotkey menu to be changed to something more suitable for the application of an individual control input such as ON OFF IN OUT etc The CTRL I P LABELS column makes it possible to change the text associated with each individual control input This text will be displayed when a control input...

Page 165: ...Application Notes P74x EN AP Na7 MiCOM P741 P742 P743 AP APPLICATION NOTES Hardware Suffix J and K Software Version 51 ...

Page 166: ...P74x EN AP Na7 Application Notes MiCOM P741 P742 P743 ...

Page 167: ...vision 20 3 1 1 Low voltage Current Transformers Supervision 20 3 1 2 High Voltage Current Transformers Supervision 20 4 CIRCUIT BREAKER FUNCTION 21 4 1 Circuit breaker state monitoring 21 4 2 Trip relays and Trip Circuit Supervision 21 4 2 1 TCS scheme 1 21 4 2 2 Scheme 1 PSL 22 4 2 3 TCS scheme 2 23 4 2 4 Scheme 2 PSL 23 4 2 5 TCS scheme 3 24 4 2 6 Scheme 3 PSL 24 5 ISOLATION AND REDUCED FUNCTIO...

Page 168: ... NUMERICAL DIFFERENTIAL BUSBAR PROTECTION PROJECT 44 7 1 Check list 44 7 2 General Substation information 45 7 3 Short Circuit Levels 45 7 4 Switchgear 46 7 5 Cubicle specifications 46 7 6 Substation Architecture 47 8 STANDARD CONFIGURATIONS 48 9 APPLICATION OF NON PROTECTION FUNCTIONS 60 9 1 Function keys 60 9 2 Differential current display 61 10 CT REQUIREMENTS 62 10 1 Notation 62 10 2 87BB Phas...

Page 169: ...eclosure The busbar protection must also remain stable for faults that occur outside of the protected zone as these faults will usually be cleared by external protection devices In the case of a circuit breaker failure it may be necessary to open all of the adjacent circuit breakers this can be achieved by issuing a backtrip to the busbar protection Security and stability are key requirements of a...

Page 170: ...and type of LEDs and the function keys that each can accommodate The P743 allows for increased I O useful in multiple bar applications or where single pole breakers and a transfer bar are employed tricolour LEDs function keys and Ethernet board slot The main features of the P74x scheme are summarised below Current differential busbar protection Phase segregated biased differential protection somet...

Page 171: ...s have to be known 1 Minimum load current in a feeder 2 Maximum load current in a feeder 3 Maximum load current in a bus 4 Biggest CT primary winding 5 Minimum short circuit value phase to phase in a bus 6 Number of independent bars 2 1 1 1 2 Idiff_Ibias Setting calculation spreadsheet Enter in the Idiff_Ibias spreadsheet the 5 values here above listed and you ll be able to choose the 7 values her...

Page 172: ...e k1 recommendation is 10 to meet 10Pxx current transformers ID 2 should be higher than 100 and when possible 120 to allow 20 margin of the biggest load to not maloperate in case of CT short circuited or open circuit and less than 80 of the minimum fault current to operate sub cycle for the minimum fault and 50 when possible to be sure to always operate in 13ms Slope k2 ID 2 a Recommendation is 65...

Page 173: ...IloadMax 1 bar the differential current is Icc min 1 bar Thus the biggest slope for the Check Zone to detect the fault is Icc min 1 bar Independent bars 1 x IloadMax 1 bar Icc min 1 bar If for example There are 3 buses and Icc min IloadMax the slope must be below 33 For a one and half breaker scheme there are 2 bars Independent bars A minimum internal short circuit value Icc min 1 bar A maximum lo...

Page 174: ...e known 1 Maximum load current in a feeder 2 Minimum phase to phase fault current Ph Ph min in a bus 3 Maximum single phase steady state faulty current Ph N Max in a bus 4 Number of independent bars 2 1 1 2 2 Differential Busbar Protection 9 values have to be chosen 1 ID 1 from 5 A to 500 A primary value recommendation equal to 1 2 x Ph N Max 2 Slope k1 ID 1 from 0 to 50 recommendation is 10 3 ID ...

Page 175: ...80 of the minimum phase to phase fault current to operate sub cycle for the minimum fault and higher than 120 Iload Max 120 to allow 20 margin and if possible equal to 6 x ID 1 to be insensitive to the worth CT saturation 2 IDCZ 2 same as ID 2 3 Slope kCZ IDCZ 2 recommendation is 30 The requirement is to be able to trip for a fault that is counted twice by the Check Zone for example one and half c...

Page 176: ...dsheet Enter in the Idiff_Ibias_SDEF spreadsheet the 8 values here above listed and you ll be able to choose the 9 values hereafter listed 2 1 1 3 3 SDEF Busbar Protection 15 values have to be entered 1 ID 1 from 5 A to 500 A primary value as high as possible 2 Slope k1 ID 1 from 0 to 50 recommendation is 5 3 ID 2 from 50 A to 50000 A primary value 4 Slope k2 ID 2 from 20 to 90 recommendation is 6...

Page 177: ...set reset timer 3 Self Reset An alarm is provided and this alarm can only be reset manually The zone is blocked and this blocking will be automatically reset once the differential current will disappear and after the set reset timer From software E1 0 model 50 it exists the possibility to allow the operation of one or more zone s in case of through fault during a circuitry fault with 2 more option...

Page 178: ...2 Alarm Self Reset and No blocking An alarm is provided The Check Zone is not blocked 2 1 1 5 2 Options for a PU error mode To block the operation of the other zones in case of internal fault during a loss of Check Zone there are 3 options 1 Blocking Latched An alarm is provided and this alarm can only be reset manually The zone is blocked and this blocking can only be reset manually 2 Alarm Latch...

Page 179: ... are confirmed by the VT connected to the bus section 1a The faults in zone 1b are confirmed by the VT connected to the bus section 1b When the isolator bus sections are closed The section 1a and 1b are in the same zone the faults are confirmed by the VT connected to the bus section 1a OR the VT connected to the bus section 1b When the isolator bus sections are open and during double switching whe...

Page 180: ... order coming from the CU The logic is based either on the I 2 high set phase overcurrent function or on the IN 2 high set neutral overcurrent function each with the following options Phase and earth fault element 87BBP N blocking Only the 87BB phase element 87BB P blocking Only the 87BB SEF element 87BB N blocking A combination of the different functions I 2 87BBP N I 2 87BB P I 2 87BB N The 87BB...

Page 181: ...lable in each Peripheral Unit The first stage I 1 is either DT or IDMT the second I 2 stage is DT only Both can be individually blocked using ddb signal in the PSL Block phase overcurrent stage 1 time delay I 1 Timer Block Block phase overcurrent stage 2 time delay I 2 Timer Block 2 2 3 Earth Fault protection EF Two stages neutral overcurrent i e Earth Fault protection is available in each Periphe...

Page 182: ...operation indicates that the circuit breaker pole is open A typical setting for overhead line or cable circuits is 20 Ιn with 5 Ιn common for generator circuit breaker CBF 2 2 6 External Fault Detection by High Set Overcurrent or Earth Fault Element There are feeders where the short circuit power is sufficiently low in relation to that of the busbar or external faults that the CT would saturate fo...

Page 183: ... infinite 13 8kV bar which is unrealistic 2 0 A for phase to earth faults When an external fault occurs on one of these transformer feeders the fault MVA will be the same as that for an internal fault but the feeder will be subjected to an excessively high overcurrent condition as compared to normal load conditions at rated current In the example shown under the external fault condition the short ...

Page 184: ...M signaling are largely dependant upon whether a direct or indirect modem multiplexed connection between the scheme ends is used Direct connections will either be short metallic or dedicated fiber optic based and hence can be set to have the highest signaling speed of 19200b s Due to this high signaling rate the difference in operating speed between the direct permissive and blocking type signals ...

Page 185: ...meSyncTim setting i e whenever a non valid message is received InterMiCOM will use the set default value A typical default selection of Default 0 intertrip NOT received substitute would generally apply as the failsafe assignment for intertripping schemes If Permissive mode is selected the chances of receiving a valid message is between that of the Blocking and Direct Intertrip modes In this case i...

Page 186: ...41 a common virtual current transformer of 1000 1 A is used to convert to secondary values 3 1 Current Transformers Supervision 3 1 1 Low voltage Current Transformers Supervision The Low voltage CTs in the PU are supervised by the 3I0 supervision algorithm If the difference between 3I0 and the measured In is higher than set after a set timer the PU CT Fail IN alarm appears in the PU This supervisi...

Page 187: ...s This complex arrangement coupled with the importance of the trip circuit has led to dedicated schemes for its supervision Several trip circuit supervision schemes with various features can be produced with the P74x range Although there are no dedicated settings for TCS in the P74x the following schemes can be produced using the programmable scheme logic PSL A user alarm is used in the PSL to iss...

Page 188: ...250 2 5k 48 54 220 250 5 0k 110 125 Note When R1 is not fitted the opto voltage setting must be set equal to supply voltage of the supervision circuit TABLE 1 SCHEME 1 OPTIONAL R1 OPTO INPUT RESISTOR VALUES 4 2 2 Scheme 1 PSL Figure 3 shows the scheme logic diagram for the TCS scheme 1 Any of the available opto inputs can be used to indicate whether or not the trip circuit is healthy The delay on ...

Page 189: ...ly compatible with latched contacts as the supervision current will be maintained through the 52b contact when the trip contact is closed When the breaker is closed supervision current passes through opto input A and the trip coil When the breaker is open current flows through opto input B and the trip coil As with scheme 1 no supervision of the trip path is provided whilst the breaker is open Any...

Page 190: ...mes 1 and 2 supervision current is maintained through the trip path with the breaker in either state thus giving pre closing supervision As with schemes 1 and 2 resistors R1 and R2 are used to prevent false tripping if the opto input is accidentally shorted However unlike the other two schemes this scheme is dependent upon the position and value of these resistors Removing them would result in inc...

Page 191: ...de all tripping information from external relay are not taken into account The topology algorithm forwards the feeder positions to the central unit as normal As the peripheral unit continues to monitor the analogue values the central unit will maintain a balanced condition with the remainder of the system still in normal operation However the CB failure backtrip information will not be sent to the...

Page 192: ...lement Whilst in this mode the peripheral unit can be tested locally for example secondary injections tests can be carried out The system is stable because during the current injection there is a differential current in the CZ but not in the Zone To test other protection relays such as Distance Feeder 50BF Feeder In Service Primary current Central Unit Normal Trips 50 51 DZ 50BF Currents Topology ...

Page 193: ...er CT and the circuit breaker However it must be remembered that in practice the feeder is still connected to busbar 1 Zone 1 will see a differential current equal to iload This extra node will see a differential current equal to iload and which when included in the check zone will give a result equal to zero If done to avoid any maloperation the Central Unit must be in 87BB blocking mode while pe...

Page 194: ...ring a very short time the zone connected to the CT of the non communicating PU is temporarily suspended If the communication is restored the differential protection is restored for the zone On the other hand if the break in communications persists longer than permitted as given by the PU Error Timer the zone protection is suspended If the PU error self reset mode is disabled for the reinstatement...

Page 195: ...Alarm Config error occurs when the configuration is incorrect Topology download in relay does not correspond to this relay address be careful to erase topology by sending a default setting file For CU check the coherency of threshold IDCZ 2 ID 1 and ID 2 ID 1 and IDNCZ 2 IDN 1 and IDN 2 IDN 1 ...

Page 196: ...connections between the various pieces of plant on the system via a graphical interface This topological replication is carried out from a single line diagram of the system which is used to recreate the system using the topology configuration software This is carried out by GE personnel at an authorised GE competence centre or by the customer for extensions after having successfully completed the ...

Page 197: ...o each peripheral unit with associated primary plant of the system The fourth file will be used by the Dynamic Synoptic software to visualise in real time the substation Algorithms search to determine the electrical topology These operate in real time in the P74x scheme They start with the information obtained regarding the state of the primary plant A state table is created and associated with ea...

Page 198: ... 2 column 2 bars with 1 CT coupling example Node 1 Zone 1 Node 2 Zone 2 If the two zones are shunt by a feeder switches Node 1 Zone 1 and Zone 2 Node 2 is then removed 2 bars with 2 CT coupling example Node 1 Zone 1 Node 2 Zone 2 A Node 3 is created when the coupling breaker is closed For the Peripheral Unit link between current transformer and zones are displayed in Topology column 2 bars with 1 ...

Page 199: ...ion Closed Isolator Closed Isolator Closed CB Closed CB Closed Zone 1 CT1 CT2 Zone 1 BB1 BB2 Check Zone CT1 CT2 FIGURE 13 BUS SECTION CLOSED A zone is defined from a CT to an other CT or an open electrical element coupler CB or isolator As all the breakers and isolators are closed there is only one zone including BB1 and BB2 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P74...

Page 200: ...en a zone is created from each bar feeder CT to that open bus section There is one zone for BB1 and one zone for BB2 6 5 2 Double bus with one CT bus coupler P0876ENa Coupling Closed Isolator Closed Isolator Closed Zone 1 CT1 CT3 Zone 2 CT2 CT3 Zone 1 BB1 Zone 2 BB2 CB Closed CB Closed Check Zone CT1 CT2 FIGURE 16 BUS COUPLER CLOSED A zone is defined from a CT to an other CT or an open electrical ...

Page 201: ...cal element coupler CB or isolator When one CT is used in the coupling and the coupler CB is open the coupler CT measurement is not taken into account and a zone is created from each bar feeder CT to that open coupler CB There is one zone for BB1 and one zone for BB2 6 5 3 Double bus with two CT bus coupler P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 P742 3 ...

Page 202: ...is one zone for BB1 to CT3 one zone for BB2 to CT4 and one virtual zone from CT3 to CT4 P0879ENa CT 3 4 not taken into account Coupling Open Isolator Closed Isolator Closed Zone 1 CT1 Zone 2 CT2 Zone 1 BB1 Zone 2 BB2 CB Closed CB Closed Check Zone CT1 CT2 FIGURE 19 BUS COUPLER OPEN A zone is defined from a CT to an other CT or an open electrical element coupler CB or isolator When 2 CTs are used i...

Page 203: ...B is closed but a coupler isolator is open the coupler CT linked to that open isolator measurement is not taken into account and the virtual zone is extended from the coupler CT to that open coupler isolator There is one zone for BB1 to the coupler CT one zone for BB2 to the open isolator and one virtual zone from the coupler CT to the open isolator P0881ENa CT 3 4 not taken into account Coupling ...

Page 204: ... load current would flow through the circuit breaker The differential current in the two main zones would equal zero as the current flowing into the zones would still equal the current flowing out However if the circuit breaker is actually closed the external fault current will flow through the circuit breaker The differential current in main zone 1 and in main zone 2 will be equal in magnitude bu...

Page 205: ...nal fault current will flow through the circuit breaker The differential current in the two main zones will be equal in magnitude but opposite in sign ifault When the check zone element is calculated the differential currents seen in the two main zones which result from the discrepancy in the plant status and which are taken into account for the check zone calculation can be seen to be cancelled o...

Page 206: ...n the CT and the circuit breaker the current will flow from zone 1 into zone 2 which feeds the fault The differential current in main zone 1 will still equal zero as the current flowing into the zone 1 will still equal the current flowing out but the differential current measured in zone 2 will be equal to that of the fault current In this case zone 2 would operate as will the check zone element Z...

Page 207: ...equal zero as the current is flowing into zone 1 whereas the current measured will be equal to the fault current ifault Zone 2 Idiff I10 I11 idiffZ2 0 Zone 1 Idiff I7 I8 idiffZ1 ifault ID 2 k2 x IBias Check zone Idiff I7 I8 I10 I11 idiffZ1 ifault IDCZ 2 kCZ x IBias Hence the system reacts to the continuing presence of the fault and trips the zone 1 as the check zone Idiff IDCZ 2 kCZ x IBias and th...

Page 208: ...o that of the fault current The main zones would not operate but the virtual zone or zone 3 which surrounds the bus coupler and has limits at the bus coupler CTs would operate When the check zone element is calculated the differential current seen in the virtual zone or zone 3 which results from the presence of the fault in the coupler will confirm the presence of a fault and initiate either 1 a s...

Page 209: ...8 idiffZ1 ifault ID 2 k2 x IBias Zone 2 Idiff I10 I11 idiffZ2 0 Check zone Idiff I7 I8 I10 I11 idiffZ1 ifault IDCZ 2 kCZ x IBias Note 1 As the topology algorithm scheme updates every 16ms The longest time to updates the topology after Isolator auxiliary contacts change state is 33ms Note 2 For the Differential Busbar protection the status positions of the Breakers are not taken into account ...

Page 210: ...g S1 Setting per Group 6 Calculate the Central Unit settings using Idiff_Ibias_xxx xls P74x setting guide 7 Calculate the different Peripheral Units settings transformer coupler line etc 8 Draw the topology line diagram using Scheme Editor and Topology Tips 9 Create the topology files using Synoptic Editor and Topology Tips 10 Merge the parameter files with the topology files using P74x File Merge...

Page 211: ...s per phase A then B then C 3 Add Rb Rbph Rbn CT parameters in the Pus using RBurden_b xls 4 Check the measurements and the tripping slopes see documentation 7 2 General Substation information Only a few system parameters are required and it is vital that these are included Number of feeders bus couplers bus sections Positions of bus sections Positions of switchgear plant i e circuit breakers isol...

Page 212: ... Nominal CT ratio Highest nominal primary current CT In Max Lowest nominal primary current CT In Min CT Knee point voltage Vk for each CT CT secondary resistance RCT for each CT Length and cross section of the conductors between each CT and the peripheral unit In the absence of precise information an estimate taken from the lowest CT ratio will suffice Auxiliary contacts of disconnecting switches ...

Page 213: ... P743 15 1 P741 and 1 P741 and 6 P743 6 P99x 7 P743 7 P99x 7 P743 7 P99x 8 P743 8 P99x FIXED FRAME P741 P741 REVOLVING DOOR REVOLVING DOOR FIXED FRAME First Cubicle Additional cubicle First Cubicle Additional cubicle FIGURE 28 1 P741 AND P743 WITH OR WITHOUT P99X TEST BLOCK 7 6 Substation Architecture Due to the flexibility of the differential busbar protection there is an infinite number of busba...

Page 214: ...ber of Peripheral Unit to use is 1 Peripheral Unit per CT P3782ENa FIGURE 29 SINGLE BUSBAR APPLICATION WITH BUS SECTION ISOLATOR The above example shows a single busbar with a bus section isolator It is split into two zones There are n feeders connected to the busbar This configuration requires 1 central unit and n peripheral units the additional peripheral unit being for the bus section isolator ...

Page 215: ...ers connected to the busbar The bus section circuit breaker has CTs on either side This configuration requires 1 central unit and n 2 peripheral units the additional peripheral units being for the bus section CTs The type of peripheral unit used for each bay will depend on the i o requirements of the bay in question It is recommended that the CTs for feeder protection are sited such as to overlap ...

Page 216: ...on is to have two separate schemes There are n feeders connected to each busbar Each scheme will require 1 central unit and n peripheral units An other solution is to use only one central unit and 2 x n peripheral units The type of peripheral unit used for each bay will depend on the i o requirements of the bay in question P3785ENa FIGURE 32 DOUBLE BUSBAR APPLICATION WITH BUS COUPLER ...

Page 217: ...SECTION The above example shows a double busbar with both a bus section and a bus coupler It is split into four zones There are n feeders connected to the busbar The bus coupler and bus section circuit breakers can have either a single CT solution 1 and 2 on one side or CTs on both sides solution 1a or 2a This configuration requires 1 central unit and n plus the following number of peripheral unit...

Page 218: ...ON ISOLATORS The above example shows a double busbar with both a bus section and a bus coupler The bus section also has additional bus section isolators and allows for bus section bypass The scheme is split into four zones There are n feeders connected to the busbar The bus coupler and bus section circuit breakers can have either a single CT solution 1 and 2 on one side or CTs on both sides soluti...

Page 219: ...P3788ENa FIGURE 35 DOUBLE BUSBAR APPLICATION WITH BUS COUPLER AND DOUBLE BUS SECTION CIRCUIT BREAKER ARRANGEMENT The above example shows a double busbar with both a bus section and a bus coupler There are circuit breakers on both the upper and lower bars The scheme is split into four zones There are n feeders connected to the busbar The bus coupler and bus section circuit breakers can have either ...

Page 220: ...required n 4 n 8 n 6 n 6 TABLE 5 NUMBER OF REQUIRED PU S FOR FIGURE 35 The number of additional peripheral units being dependant on the number of bus section bus coupler CTs The type of peripheral unit used for each bay will depend on the i o requirements of the bay in question P3789ENa FIGURE 36 DOUBLE BUSBAR APPLICATION WITH A BUS COUPLER THE TRANSFER BUSBAR IS NOT INCLUDED IN THE PROTECTION ZON...

Page 221: ...s a double busbar with a bus coupler and a transfer busbar The transfer busbar is on the bus side of all the feeder CTs it is included in the protected zone It can be considered similarly to figure 38 where an additional peripheral unit has been included for the transfer bay The only difference being the positioning of the CTs and therefore the protection Again it is split into two zones With an a...

Page 222: ...on requires 1 central unit and n plus the following number of peripheral units The total number of peripheral units required allows for a peripheral unit for the bus section isolators Solution Solution A 1 CT on BC 1 CT on BS Solution B 2 CT on BC 2 CT on BS Solution C 1 CT on BC 2 CT on BS Solution D 2 CT on BC 1 CT on BS Solution 1 Solution 1a Solution 2 Solution 2a Number of peripheral units re...

Page 223: ...EEDER The above example shows a double busbar with two circuit breakers on each feeder The scheme is split into two zones There are n feeders connected to the busbar This configuration should require 1 central unit and 2 x n peripheral units but only n Peripheral Units can be used In each bay the two peripheral units should share the CT and each circuit breaker should be assigned to a separate per...

Page 224: ... section and bypass circuit breakers can have either a single CT solution 1 2 and 3 on one side or CTs on both sides solution 1A 2A and 3A This configuration requires 1 central unit and n plus the following number of peripheral units Solution Solution A 1 CT on BC 1 CT on each BS Solution B 2 CT on BC 2 CT on each BS Solution C 1 CT on BC 2 CT on each BS Solution D 2 CT on BC 1 CT on each BS Solut...

Page 225: ... of peripheral units required n 5 n 10 n 8 n 7 If a second bus coupler is added i e one bus coupler either side of the bus section and bypass facilities are included Using solution 3 Using solution 3a Number of peripheral units required n 6 n 12 n 9 n 10 TABLE 7 NUMBER OF REQUIRED PU S FOR FIGURE 41 The number of additional peripheral units being dependant on the number of bus section bus coupler ...

Page 226: ...es the PUs Four settings groups Independent remotely selectable setting groups to allow for customer specific applications CB and isolator state monitoring indication of the circuit breaker isolator position via the auxiliary contacts scheme acts accordingly should discrepancy conditions be detected CB control available locally via the HMI Commissioning test facilities Continuous self monitoring e...

Page 227: ...LED will indicate the state of the protection function in service as GREEN and YELLOW for the 50BF disable mode and RED for the Overhaul mode 9 2 Differential current display When the differential currents are low it is possible to force to 0 the value of these differential currents displayed in the column MEASUREMENT 1 MEASUREMENT 2 When the differential currents of a zone are all lower than the ...

Page 228: ...for the majority of line or transformer protection applications The CT must be sized so as not to saturate during internal faults For each CT IFeederMax maximum contribution of the feeder to an internal fault could be different for each feeder Vk IFeederMax RCT RB Note This specification is valid for internal faults 10 2 2 Out of service feeders or those with low power contribution low infeed Beca...

Page 229: ...e error is 5 5A with this EMF the point of operation is beyond the knee point voltage for saturation By convention one admits that the knee point voltage Vk is 80 of this value For a conversion between a class 5P IEC and a class X BS CT one uses the relation Vk 0 8 X SVA x Kssc In RCT x Kssc x In SVA In x Vk 0 8 Kssc RCT x In 2 In particular cases calculation could reveal values too low to corresp...

Page 230: ...ied differently The following table allows C57 13 ratings to be translated into an IEC BS knee point voltage CT Ratio RCT ohm IEEE C57 13 C Classification volts C50 C100 C200 C400 C800 Vk Vk Vk Vk Vk 100 5 0 04 56 5 109 214 424 844 200 5 0 8 60 5 113 218 428 848 400 5 0 16 68 5 121 226 436 856 800 5 0 32 84 5 137 242 452 872 1000 5 0 4 92 5 145 250 460 880 1500 5 0 6 112 5 165 270 480 900 2000 5 0...

Page 231: ...Application Notes P74x EN AP Na7 MiCOM P741 P742 P743 AP 6 65 AP Where Vk Equivalent IEC or BS knee point voltage C C Rating In 5A RCT CT secondary winding resistance Kssc 20 times ...

Page 232: ...high rupturing capacity This gives equivalent characteristics to HRC red spot fuses type NIT TIA often specified historically The table below recommends advisory limits on relays connected per fused spur This applies to Px40 series devices with hardware suffix C and higher as these have inrush current limitation on switch on to conserve the fuse link Maximum Number of Px40 Relays Recommended Per F...

Page 233: ...Programmable Logic P74x EN PL Na7 MiCOM P741 P742 P743 PL PROGRAMMABLE LOGIC Hardware Suffix J and K Software Version 51 ...

Page 234: ...P74x EN PL Na7 Programmable Logic MiCOM P741 P742 P743 ...

Page 235: ... GOOSE output signal properties 8 1 6 7 Control in signal properties 9 1 6 8 InterMiCOM In command properties 9 1 6 9 InterMiCOM Out command properties 9 1 6 10 Function key properties 9 1 6 11 Fault recorder trigger properties 9 1 6 12 LED signal properties 10 1 6 13 Contact signal properties 10 1 6 14 LED conditioner properties 10 1 6 15 Contact conditioner properties 11 1 6 16 Timer properties ...

Page 236: ... Relay output contact mapping 48 1 13 Function key input mapping 49 1 14 Programmable LED output mapping 50 1 15 Fault recorder start mapping 54 1 16 PSL DATA column 54 P741 PROGRAMMABLE SCHEME LOGIC 55 P742 PROGRAMMABLE SCHEME LOGIC 59 P743 PROGRAMMABLE SCHEME LOGIC 63 ...

Page 237: ...ts e g to create a pulse of fixed duration on the output regardless of the length of the pulse on the input The outputs of the PSL are the LEDs on the front panel of the relay and the output contacts at the rear The execution of the PSL logic is event driven the logic is processed whenever any of its inputs change for example as a result of a change in one of the digital input signals or a trip ou...

Page 238: ... be sent are compatible with the connected relay Wrongly ignoring the warning could lead to undesired behaviour in the relay If there are any potential problems of an obvious nature then a list will be generated The types of potential problems that the program attempts to detect are One or more gates LED signals contact signals and or timers have their outputs linked directly back to their inputs ...

Page 239: ...d other annotations for easier reading of PSL schemes 1 5 4 Nudge tools To move logic elements 1 5 5 Rotation tools Tools to spin mirror and flip 1 5 6 Structure tools To change the stacking order of logic components 1 5 7 Zoom and pan tools For scaling the displayed screen size viewing the entire PSL or zooming to a selection 1 5 8 Logic symbols This toolbar provides icons to place each type of l...

Page 240: ...OOSE message to another IED Used in IEC 61850 GOOSE applications only Control In Create an input signal to logic that can be operated from an external command Function Key Create a function key input signal Trigger Signal Create a fault record trigger LED Signal Create an LED input signal that repeats the status of tri colour LED Contact Signal Create a contact signal LED Conditioner Create an LED...

Page 241: ...input to the gate It is not possible to invert a link that is not connected to the input of a gate Rules for Linking Symbols Links can only be started from the output of a signal gate or conditioner and can only be ended on an input to any element Since signals can only be either an input or an output then the concept is somewhat different In order to follow the convention adopted for gates and co...

Page 242: ...the sensitive earth function stage 1 timer 1 6 5 GOOSE input signal properties GOOSE In The Programmable Scheme Logic interfaces with the GOOSE Scheme Logic see S1 users manual by means of 32 Virtual inputs The Virtual Inputs can be used in much the same way as the Opto Input signals The logic that drives each of the Virtual Inputs is contained within the relay s GOOSE Scheme Logic file It is poss...

Page 243: ... used for teleprotection InterMiCOM Out is a send command to a remote end that could be mapped to any logic output or opto input This signal will be transmitted to the remote end using protection communication and will appear at the remote end as corresponding InterMiCOM In command For example InterMiCOM Output 1 is mapped to opto input 4 1 6 10 Function key properties Function Key Each function k...

Page 244: ...ated DDB signal when the output contact is activated For example DDB 009 will be asserted when output R10 is activated 1 6 14 LED conditioner properties LED Conditioner 1 Select the LED name from the list only shown when inserting a new symbol 2 Configure the LED output to be Red Yellow or Green Configure a Green LED by driving the Green DDB input Configure a RED LED by driving the RED DDB input C...

Page 245: ...sealed in or lockout type function 1 Select the contact name from the Contact Name list only shown when inserting a new symbol 2 Choose the conditioner type required in the Mode tick list 3 Set the Pick up Time in milliseconds if required 4 Set the Drop off Time in milliseconds if required 1 6 16 Timer properties Each timer can be selected for pick up drop off dwell pulse or pick up drop off opera...

Page 246: ...non volatile upon power cycle The inversions of the input and output signals are supported The state of Q is reset when a new PSL is downloaded to the relay or when the active setting group is changed The maximum number of SR Latch gates is 64 The evaluation of the Q state is carried out after all the DDB changes have completed i e at the end of the protection cycle and synchronised with protectio...

Page 247: ... last state 1 1 1 Set Input Dominant S RD Q S R Q 1 0 1 0 1 0 0 0 no change last state 1 1 0 Reset Input Dominant P0737ENa 1 Select the Gate type AND OR or Programmable 2 Set the number of inputs to trigger when Programmable is selected 3 Select if the output of the gate should be inverted using the Invert Output check box An inverted output is indicated with a bubble on the gate output ...

Page 248: ...ing P741 143 User Alarm 8 PSL Output Signal PSL Triggers User Alarm 8 message to be alarmed on LCD display self resetting P741 144 PU Error Lck z8 PSL Input Signal Scheme Integrity PU error blocking of zone 8 P741 151 PU Error Lck z1 PSL Input Signal Scheme Integrity PU error blocking of zone 1 P741 152 PU Error Alm z8 PSL Input Signal Scheme Integrity PU error alarm in zone 8 P741 159 PU Error Al...

Page 249: ...ase A P741 263 Fault phase B PSL Input Signal 87BB Busbar Protection Differential fault current in phase B P741 264 Fault phase C PSL Input Signal 87BB Busbar Protection Differential fault current in phase C P741 265 Earth Fault PSL Input Signal 87BB Busbar Protection Differential sensitive earth fault current P741 266 Circt Flt Alm Zx PSL Input Signal Scheme Integrity Circuitry fault Alarm on 1 o...

Page 250: ...ion P741 367 87BB DelayedTrip PSL Input Signal 87BB Busbar Protection 87BB Trip after fault detection on 2 successive half periods Function to be able to trip on internal fault with CT saturation P741 368 PU CU Signal 01 PSL Input Signal PSL Virtual Signal 01 from any PU to the CU via the fibre optic P741 383 PU CU Signal 16 PSL Input Signal PSL Virtual Signal 16 from any PU to the CU via the fibr...

Page 251: ...nnel Failure Alarm P741 486 Backup Setting PSL Input Signal InterMiCOM Backup setting Alarm This is an alarm that is ON if any setting fail during the setting changing process If this happens the relay will use the last known good setting P741 512 Virtual Output 1 GOOSEOUT PSL GOOSE Output 1 Allows user to control a binary signal which can be mapped via SCADA protocol output to other devices P741 ...

Page 252: ...RI_LED_CON Output Conditioner Assignment of signal to drive output Function Key LED 10 Red This LED is associated with Function Key 10 P741 799 FnKey LED 10 Grn TRI_LED_CON Output Conditioner Assignment of signal to drive output Function Key LED 10 Green This LED is associated with Function Key 10 To drive function key LED1 yellow DDB 710 and DDB 711 must be active at the same time P741 923 Int No...

Page 253: ... z1 PSL Input Signal 87BB Busbar Protection Circuitry fault blocking of zone 1 P741 160 Circt Flt Lck z8 PSL Input Signal 87BB Busbar Protection Circuitry fault blocking of zone 8 P741 280 Circt Flt Lck Zx PSL Input Signal Scheme Integrity Circuitry fault blocking Zone x Logical OR of DDB 160 to 239 P741 276 Circt Flt ph A PSL Input Signal Scheme Integrity Circuitry fault in phase A P741 277 Circt...

Page 254: ... signal to drive output Function Key LED 1 Red This LED is associated with Function Key 1 P741 675 FnKey LED 10 Grn TRI_LED PSL LED Programmable Function Key LED 10 Green is energized P741 799 FnKey LED 10 Grn TRI_LED_CON Output Conditioner Assignment of signal to drive output Function Key LED 10 Green This LED is associated with Function Key 10 To drive function key LED1 yellow DDB 710 and DDB 71...

Page 255: ...st be active at the same time P741 654 LED 8 Red TRI_LED PSL LED Programmable LED 8 Red is energized P741 778 LED 8 Red Condit TRI_LED_CON Output Conditioner Assignment of signal to drive output LED 8Red P741 267 Locking Level 1 PSL Input Signal Scheme Integrity Commissioning mode 1 87BB monitoring Logical OR of DDB 224 to 231 P741 268 Locking Level 2 PSL Input Signal Scheme Integrity Commissionin...

Page 256: ...t Signal PSL To reset PU error P741 393 RP1 Read Only PSL Output Signal PSL All setting changes and most command control actions blocked for Rear Port 1 P741 394 RP2 Read only PSL Output Signal PSL All setting changes and most command control actions blocked for Rear Port 2 when option available P741 283 SEF Blocked PSL Input Signal 87BB SEF Busbar Protection 87BB SEF blocked by opto input Logical...

Page 257: ... of the isolator 6 P742 115 Q6 Aux 89a PSL Output Signal PSL 89 A Isolator closed Auxiliary Input 3 phase of the isolator 6 P742 116 Ext 3 ph Trip PSL Output Signal PSL 50BF protection External 3 phase Trip Allows external protection to initiate breaker fail if enabled P742 117 External Trip A PSL Output Signal PSL 50BF protection External 3 phase A Trip Allows external protection to initiate brea...

Page 258: ... due to an external trip initiation of this phase at tBF3 P742 171 Int Retrip 3 ph PSL Input Signal 50BF Protection Retrip triphase due to a 87BB trip initiation at tBF1 P742 172 CBF Int Backtrip PSL Input Signal 50BF Backtrip Protection Backtrip triphase due to a trip initiation from CU at tBF2 P742 173 CBF Ext Backtrip PSL Input Signal 50BF Backtrip Protection Backtrip triphase due to a trip ini...

Page 259: ...9 Offset Chan ABCN PSL Input Signal Saturation Offset current read by the Analog board Phase A B C or N P742 240 Predict err ph A PSL Input Signal Saturation Variation error phase A derived current P742 241 Predict err ph B PSL Input Signal Saturation Variation error phase B derived current P742 242 Predict err ph C PSL Input Signal Saturation Variation error phase C derived current P742 244 Sat A...

Page 260: ...ul mode PSL Input Signal Commissioning PU in overhaul mode P742 308 50BF Disabled PSL Input Signal Commissioning PU in 50BF blocked mode Alarm P742 311 50BF Disabled PSL Output Signal Commissioning To switch the PU in 50BF blocked mode P742 312 Overhaul Mode PSL Output Signal Commissioning To switch the PU in overhaul mode P742 314 I BB Enabled PSL Input Signal Local protection Overcurrent Local t...

Page 261: ...ement trips P742 358 Any Trip PSL Input Signal All Protections Any Trip Logical OR of ddbs 0 1 2 168 169 170 171 256 261 P742 362 RP1 Read Only PSL Output signal PSL All setting changes and most command control actions blocked for Rear Port 1 P742 363 RP2 Read Only PSL Output signal PSL All setting changes and most command control actions blocked for Rear Port 2 not used P742 376 87BB Fault Ph A P...

Page 262: ...tected P742 376 87BB Fault Ph A PSL Output signal PSL 87BB Phase Fault detected in phase A P742 377 87BB Fault Ph B PSL Output signal PSL 87BB Phase Fault detected in phase B P742 378 87BB Fault Ph C PSL Output signal PSL 87BB Phase Fault detected in phase C P742 254 Acq Error 3Io PSL Input Signal Relay Integrity Sample acquisition error 3 x Io In P742 270 All Prot Blocked PSL Input Signal Commiss...

Page 263: ...ase A undercurrent CBF Dead Pole Start P742 601 CBF I Start B PSL Output Signal 50BF Protection Phase B undercurrent CBF Dead Pole Start P742 602 CBF I Start C PSL Output Signal 50BF Protection Phase C undercurrent CBF Dead Pole Start P742 603 CBF I Start A PSL Output Signal 50BF Protection Phase A overcurrent CBF Dead Pole Start P742 604 CBF I Start B PSL Output Signal 50BF Protection Phase B ove...

Page 264: ... Input Signal Relay Integrity Fibre communication to the CU error P742 253 Fibre Com Worn PSL Input Signal Relay Integrity Warning fibre communication to be changed P742 470 Field Voltage Fail PSL Input Signal Relay Integrity 48V Field Voltage Failure P742 343 Forced Mode ON PSL Input Signal Commissioning When the forced positions of the CB and the Isolators are used during commissioning test P742...

Page 265: ...CON PSL Assignment of signal to drive LED 8 Red P742 353 Man CB Cls Fail PSL Input Signal Scheme Integrity Circuit Breaker Failed to Close after a manual operator close command P742 354 Man CB Trip Fail PSL Input Signal Scheme Integrity Circuit Breaker Failed to Trip after a manual operator trip command P742 166 Man Close CB PSL Output Signal PSL Circuit Breaker closing order CB Control P742 167 M...

Page 266: ...y 02 All trips FSL but not retrip P742 2 Relay Label 03 RELAY Output Conditioner Output Relay 03 All trips FSL but not retrip P742 3 Relay Label 04 RELAY Output Conditioner Output Relay 04 P742 7 Relay Label 08 RELAY Output Conditioner Output Relay 08 P742 134 Reset All values PSL Output Signal PSL Commissioning Not used P742 135 Reset Indication PSL Output Signal PSL Commissioning Reset all indic...

Page 267: ...one 8 in commissioning mode or blocked by a Circuitry fault or a PU error 1 9 Description of P743 logic nodes 1 9 1 Sorted by DDB number Relay DDB No English Text Type Source Description P743 0 Relay Label 01 RELAY Output Conditioner Output Relay 01 All trips FSL but not retrip P743 1 Relay Label 02 RELAY Output Conditioner Output Relay 02 All trips FSL but not retrip P743 2 Relay Label 03 RELAY O...

Page 268: ...ibre optic P743 160 Man Close Q1 Cmd PSL Output Signal PSL Manual operator Isolator 1 switch closing command P743 165 Man Close Q6 Cmd PSL Output Signal PSL Manual operator Isolator 6 switch closing command P743 166 Man Close CB PSL Output Signal PSL Circuit Breaker closing order CB Control P743 167 Man Trip CB PSL Output Signal PSL Circuit Breaker tripping order CB Control P743 168 Ext Retrip Ph ...

Page 269: ...Saturation Saturation on phase C P743 235 Current Overflow PSL Input Signal Saturation Fibre optic Maximum primary current encoding exceeded P743 236 Max Flux ph A PSL Input Signal Saturation Maximum flux reached in the phase A CT P743 237 Max Flux ph B PSL Input Signal Saturation Maximum flux reached in the phase B CT P743 238 Max Flux ph C PSL Input Signal Saturation Maximum flux reached in the ...

Page 270: ...PU Overhaul mode PSL Input Signal Commissioning PU in overhaul mode P743 308 50BF Disabled PSL Input Signal Commissioning PU in 50BF blocked mode Alarm P743 311 50 BF Disabled PSL Output Signal Commissioning To switch the PU in 50BF blocked mode P743 312 Overhaul Mode PSL Output Signal Commissioning To switch the PU in overhaul mode P743 314 I BB Enabled PSL Input Signal Local protection Overcurre...

Page 271: ...SL Output signal PSL All setting changes and most command control actions blocked for Rear Port 1 P743 363 RP2 Read only PSL Output signal PSL All setting changes and most command control actions blocked for Rear Port 2 when option available P743 364 NIC Read Only PSL Output signal PSL All setting changes and most command control actions blocked for the Ethernet port when option available P743 376...

Page 272: ... P743 605 CBF I Start C PSL Output Signal 50BF Protection Phase C overcurrent CBF Dead Pole Start P743 606 CBF I Start N PSL Output Signal 50BF Protection Neutral overcurrent CBF Dead Pole Start P743 608 Control Input 1 CONTROL Control Input Command Control Input 1 for SCADA and menu commands into PSL P743 639 Control Input 32 CONTROL Control Input Command Control Input 32 for SCADA and menu comma...

Page 273: ...ed by DDB name Relay DDB No English Text Type Source Description P743 311 50 BF Disabled PSL Output Signal Commissioning To switch the PU in 50BF blocked mode P743 308 50BF Disabled PSL Input Signal Commissioning PU in 50BF blocked mode Alarm P743 379 87BB Earth Fault PSL Output signal PSL 87BB earth Fault detected P743 376 87BB Fault Ph A PSL Output signal PSL 87BB Phase Fault detected in phase A...

Page 274: ...ercurrent CBF Dead Pole Start P743 602 CBF I Start C PSL Output Signal 50BF Protection Phase C undercurrent CBF Dead Pole Start P743 603 CBF I Start A PSL Output Signal 50BF Protection Phase A overcurrent CBF Dead Pole Start P743 604 CBF I Start B PSL Output Signal 50BF Protection Phase B overcurrent CBF Dead Pole Start P743 605 CBF I Start C PSL Output Signal 50BF Protection Phase C overcurrent C...

Page 275: ... Integrity Fibre communication to the CU error P743 253 Fibre Com Worn PSL Input Signal Relay Integrity Warning fibre communication to be changed P743 470 Field Voltage Fail PSL Input Signal Relay Integrity 48V Field Voltage Failure P743 657 FnKey LED 1 Grn TRI_LED PSL LED Programmable Function Key LED 1 Green is energized P743 781 FnKey LED 1 Grn TRI_LED_CON Output Conditioner Assignment of signa...

Page 276: ... Signal InterMiCOM InterMiCOM Channel Failure Alarm P743 484 IM Data CD Fail PSL Input Signal InterMiCOM InterMiCOM Data Channel Detect Fail P743 482 IM Loopback PSL Input Signal InterMiCOM InterMiCOM indication that Loopback testing is in progress P743 483 IM Message Fail PSL Input Signal InterMiCOM InterMiCOM Message Failure Alarm P743 179 IN 1 Start PSL Input Signal Earth Fault 1st Stage Earth ...

Page 277: ...o Response PSL Input Signal IEC 61850 Ethernet board not responding P743 473 NIC Not Fitted PSL Input Signal IEC 61850 Ethernet board not fitted P743 364 NIC Read Only PSL Output signal PSL All setting changes and most command control actions blocked for the Ethernet port when option available P743 476 NIC Soft Reload PSL Input Signal IEC 61850 Ethernet card software reload Alarm P743 480 NIC SW M...

Page 278: ...er of phase C current saturated P743 232 Saturation ph A PSL Input Signal Saturation Saturation on phase A P743 233 Saturation ph B PSL Input Signal Saturation Saturation on phase B P743 234 Saturation ph C PSL Input Signal Saturation Saturation on phase C P743 132 Sett Grp Bit LSB PSL Output Signal PSL Setting Group Selector X1 low bit SG1 is active DDB 104 0 DDB 105 0 SG2 is active DDB 104 1 DDB...

Page 279: ...sh Text Type Source Description P743 215 Zone 1 Off PSL Input Signal CU Information Zone 1 in commissioning mode or blocked by a Circuitry fault or a PU error P743 208 Zone 8 Off PSL Input Signal CU Information Zone 8 in commissioning mode or blocked by a Circuitry fault or a PU error ...

Page 280: ...4 Input Label 04 Disable 87BB 50BF on zone 2 5 Input Label 05 Maintenance mode authorization 6 Input Label 06 Not Mapped 7 Input Label 07 Not Mapped 8 Input Label 08 Block all protections CU PU Peripheral Unit P742 Opto Input Number P74x Relay Text Function 1 Input Label 01 Reset Indication 2 Input Label 02 Reset Trip Latch 3 Input Label 03 Isolator 1 closed auxiliary contact 89a 4 Input Label 04 ...

Page 281: ...el 08 Circuit Breaker open auxiliary contact 52b 9 Input Label 09 Isolator 3 closed auxiliary contact 89a 10 Input Label 10 Isolator 3 open auxiliary contact 89b 11 Input Label 11 Mode 50BF disabled 12 Input Label 12 Can be linked to External 3 phase trip initiation 13 Input Label 13 CB not available 14 Input Label 14 Can be linked to External circuit breaker failure 15 Input Label 15 Manual CB cl...

Page 282: ... Label 08 Pick up 0 0 Check Zone fault Peripheral Unit P742 Relay Contact Number P74x Relay Text P74x Relay Conditioner Function 1 Relay Label 01 Pick up 0 0 Trip 87BB or 50BF backtrip or overcurrent earth fault trip fixed 2 Relay Label 02 Pick up 0 0 Trip 87BB or 50BF backtrip or overcurrent earth fault trip fixed 3 Relay Label 03 Pick up 0 0 Trip 87BB or 50BF backtrip or overcurrent earth fault ...

Page 283: ...Mapped 15 Relay Label 15 Pick up 0 0 Not Mapped 16 Relay Label 16 Pick up 0 0 Not Mapped Note It is essential that Relay 1 2 and 3 are used for tripping purposes as this output is directly driven in the fixed logic to obtain the typical 13ms tripping time A fault record can be generated by connecting one or a number of contacts to the Fault Record Trigger in PSL It is recommended that the triggeri...

Page 284: ... as shown in the following table Central Unit P741 LED Number LED Input Connection Text Latched P74x LED Function Indication 1 LED1 Red LED1 Yellow LED1 Green Yes 87BB fault on phase A Not used Not used 2 LED2 Red LED2 Yellow LED2 Green Yes 87BB fault on phase B Not used Not used 3 LED3 Red LED3 Yellow LED3 Green Yes 87BB fault on phase C Not used Not used 4 LED4 Red LED4 Yellow LED4 Green Yes 50B...

Page 285: ...low FnKey LED3 Green No All protections Disabled Not used All protections Not Disabled 12 FnKey LED4 Red FnKey LED4 Yellow FnKey LED4 Green No Zone 1 87BB 50BF blocked Zone 1 50BF blocked Zone 1 protected 13 FnKey LED5 Red FnKey LED5 Yellow FnKey LED5 Green No Zone 2 87BB 50BF blocked Zone 2 50BF blocked Zone 2 protected 14 FnKey LED6 Red FnKey LED6 Yellow FnKey LED6 Green No Not used Not used Res...

Page 286: ...solator 1 Closed Isolator 1 Status Alarm Isolator 1 Open 2 LED2 Red LED2 Yellow LED2 Green No Isolator 2 Closed Isolator 2 Status Alarm Isolator 2 Open 3 LED3 Red LED3 Yellow LED3 Green No Isolator 3 Closed Isolator 3 Status Alarm Isolator 3 Open 4 LED4 Red LED4 Yellow LED4 Green Yes Trip on CU 50BF backtrip order Not used Not used 5 LED5 Red LED5 Yellow LED5 Green Yes Trip on CU 87BB trip order N...

Page 287: ...y LED4 Red FnKey LED4 Yellow FnKey LED4 Green No Not used Mode 50BF disabled Mode normal 13 FnKey LED5 Red FnKey LED5 Yellow FnKey LED5 Green No Mode overhaul Not used Mode normal 14 FnKey LED6 Red FnKey LED6 Yellow FnKey LED6 Green No Not used 15 FnKey LED7 Red FnKey LED7 Yellow FnKey LED7 Green No Not used 16 FnKey LED8 Red FnKey LED8 Yellow FnKey LED8 Green No Not used 17 FnKey LED9 Red FnKey L...

Page 288: ...PSL DATA column that can be used to track PSL modifications A total of 12 cells are contained in the PSL DATA column 3 for each setting group The function for each cell is shown below Grp PSL Ref When downloading a PSL to the relay the user will be prompted to enter which group the PSL is for and a reference identifier The first 32 characters of the reference ID will be displayed in this cell The ...

Page 289: ...Programmable Logic P74x EN PL Na7 MiCOM P741 P742 P743 PL 7 55 PL P741 PROGRAMMABLE SCHEME LOGIC ...

Page 290: ...P74x EN PL Na7 Programmable Logic PL 7 56 MiCOM P741 P742 P743 PL ...

Page 291: ...Programmable Logic P74x EN PL Na7 MiCOM P741 P742 P743 PL 7 57 PL ...

Page 292: ...P74x EN PL Na7 Programmable Logic PL 7 58 MiCOM P741 P742 P743 PL ...

Page 293: ...Programmable Logic P74x EN PL Na7 MiCOM P741 P742 P743 PL 7 59 PL P742 PROGRAMMABLE SCHEME LOGIC ...

Page 294: ...P74x EN PL Na7 Programmable Logic PL 7 60 MiCOM P741 P742 P743 PL ...

Page 295: ...Programmable Logic P74x EN PL Na7 MiCOM P741 P742 P743 PL 7 61 PL ...

Page 296: ...P74x EN PL Na7 Programmable Logic PL 7 62 MiCOM P741 P742 P743 PL ...

Page 297: ...Programmable Logic P74x EN PL Na7 MiCOM P741 P742 P743 PL 7 63 PL P743 PROGRAMMABLE SCHEME LOGIC ...

Page 298: ...P74x EN PL Na7 Programmable Logic PL 7 64 MiCOM P741 P742 P743 PL ...

Page 299: ...Programmable Logic P74x EN PL Na7 MiCOM P741 P742 P743 PL 7 65 PL ...

Page 300: ...P74x EN PL Na7 Programmable Logic PL 7 66 MiCOM P741 P742 P743 PL ...

Page 301: ...Measurements and Recording P74x EN MR Na7 MiCOM P741 P742 P743 MR MEASUREMENTS AND RECORDING Hardware Suffix J and K Software Version 51 ...

Page 302: ...P74x EN MR Na7 Measurements and Recording MiCOM P741 P742 P743 ...

Page 303: ...t 7 2 3 5 Protection element starts and trips 9 2 3 6 General events 9 2 3 7 Fault records 10 2 3 8 Maintenance reports 10 2 3 9 Setting changes 10 2 4 Resetting of event fault records 10 2 5 Viewing event records via S1 support software 11 2 6 Event filtering 13 3 DISTURBANCE RECORDER 14 3 1 Disturb recorder column Central Unit P741 14 3 2 Disturb recorder column Peripheral Unit P742 or P743 15 4...

Page 304: ...P74x EN MR Na7 Measurements and Recording MR 8 2 MiCOM P741 P742 P743 MR 5 MONITORING TOOLS 19 5 1 S1 19 5 2 Dynamic Synoptic 19 ...

Page 305: ...e P74x is equipped with integral measurements event fault and disturbance recording facilities suitable for analysis of complex system disturbances The relay is flexible enough to allow for the programming of these facilities to specific user application requirements and are discussed below ...

Page 306: ... record from the possible 512 that may be stored A value of 0 corresponds to the latest event and so on Time Date Time Date Stamp for the event given by the internal Real Time Clock Event Text Up to 16 Character description of the Event refer to following sections Event Value Up to 32 Bit Binary Flag or integer representative of the Event refer to following sections Select Fault Setting range from...

Page 307: ...ted correspondence to Report Data Reset Indication Either Yes or No This serves to reset the trip LED indications provided that the relevant protection element has reset to reset all LED and relays latched in the PSL and to reset the latched alarms 2 2 View Records Column P742 P743 VIEW RECORDS Description LCD Reference Select Event Setting range from 0 to 511 This selects the required event recor...

Page 308: ...he occurrence They form a specific error code which should be quoted in any related correspondence to Report Data Reset Indication Either Yes or No This serves to reset the trip LED indications provided that the relevant protection element has reset to reset all LED and relays latched in the PSL and to reset the latched alarms For extraction from a remote source via communications refer to the SCA...

Page 309: ...rm Condition Event Text Event Value Battery Fail Battery Fail ON OFF Bit position 0 in 32 bit field Field Voltage Fail Field Volt Fail ON OFF Bit position 1 in 32 bit field The previous table shows the abbreviated description that is given to the various alarm conditions and also a corresponding value between 0 and 31 This value is appended to each alarm event in a similar way as for the input and...

Page 310: ...arm 40 Active Alarm 40 Active Alarm 40 Active Bit 8 Alarm 41 Active Alarm 41 Active Alarm 41 Active Bit 9 Alarm 42 Active Alarm 42 Active Alarm 42 Active Bit 10 Alarm 43 Active Alarm 43 Active Alarm 43 Active Bit 11 Alarm 44 Active Alarm 44 Active Alarm 44 Active Bit 12 Alarm 45 Active Alarm 45 Active Alarm 45 Active Bit 13 Alarm 46 Active Alarm 46 Active Alarm 46 Active Bit 14 Alarm 47 Active Ala...

Page 311: ...used Unused Unused Bit 24 Unused Unused Unused Bit 25 Unused Unused Unused Bit 26 Unused Unused Unused Bit 27 Unused Unused Unused Bit 28 Unused Unused Unused Bit 29 Unused Unused Unused Bit 30 Unused Unused Unused Bit 31 Unused Unused Unused 2 3 5 Protection element starts and trips Any operation of protection elements either a start or a trip condition will be logged as an event record consistin...

Page 312: ...the contact had fully reset 2 3 8 Maintenance reports Internal failures detected by the self monitoring circuitry such as watchdog failure field voltage failure etc are logged into a maintenance report The maintenance report holds up to 10 such events and is accessed from the Select Report cell at the bottom of the VIEW RECORDS column Each entry consists of a self explanatory text string and a Typ...

Page 313: ...1 support software When the event records are extracted and viewed on a PC they look slightly different than when viewed on the LCD The following shows a P741 example of how various events appear when displayed using S1 The following shows a P742 example of how various events appear when displayed using S1 ...

Page 314: ... the description and time stamp for the event whilst the additional information that is displayed below may be collapsed via the symbol For further information regarding events and their specific meaning refer to relay menu database document P74x EN MR This is a standalone document not included in this manual ...

Page 315: ... events enable or disable event generation for any change in relay output logic input general and protection events or fault and maintenance record display DDB signals Note that some occurrences will result in more than one type of event e g a battery failure will produce an alarm event and a maintenance record event If the Protection Event setting is enabled a further set of settings is revealed ...

Page 316: ...Explanation Analog Channel 1 IA diff Phase A differential calculated current Analog Channel 2 IB diff Phase B differential calculated current Analog Channel 3 IC diff Phase C differential calculated current Analog Channel 4 IN diff Neutral differential calculated current Analog Channel 5 IA bias Phase A bias calculated current Analog Channel 6 IB bias Phase B bias calculated current Analog Channel...

Page 317: ...C Phase C analogue current input Analog Channel 4 IN Neutral analogue current input Digital Input 1 Field Volt Fail Mains field voltage Input 1 trigger No Trigger Digital input 2 Any Trip Any Trip digital channel Input 2 trigger Trigger L H Digital input 3 CB Closed CB Closed digital channel Input 3 trigger No Trigger Digital input 4 CB Fail Alarm CB Fail Alarm digital channel Input 4 trigger No T...

Page 318: ...ital signals such as protection starts LEDs etc The pre and post fault recording times are set by a combination of the Duration and Trigger Position cells Duration sets the overall recording time and the Trigger Position sets the trigger point as a percentage of the duration For example the default settings show that the overall recording time is set to 1 2s with the trigger point being at 33 3 of...

Page 319: ...orm used by the relay protection functions and present both magnitude and phase angle measurement 4 3 Sequence voltages and currents Sequence quantities are produced by the P742 and P743 relays from the measured Fourier values these are displayed as magnitude and phase angle values 4 4 Settings The settings under the heading Measur t setup can be used to configure the relay measurement function se...

Page 320: ...bias Z08 IN bias Peripheral Unit P742 or P743 MEASUREMENTS 1 TOPOLOGY 1 IA Magnitude Link CT zone IA Phase Angle Zx1 IA Diff IB Magnitude Zx1 IB Diff IB Phase Angle Zx1 IC Diff IC Magnitude Zx1 IN Diff IC Phase Angle Zx1 IA Bias IN Magnitude Zx1 IB Bias IN Phase Angle Zx1 IC Bias IN Derived Magn Zx1 IN Bias IN Derived Angle Zx2 IA Diff Frequency Zx2 IB Diff Zx2 IC Diff Zx2 IN Diff Zx2 IA Bias Zx2 ...

Page 321: ...list txt with text editor for example notepad This file is located in directory Monitor in the path of S1 install default is c Programmes Files AREVA MiCOM S1 Monitor Go to line P741 referring to documentation Menu Database P74x EN GC Remove addresses of cell that you don t want to display after the line Measurement For example to remove cell Topology 1 Current node 5 delete line 0405 Save file La...

Page 322: ...P74x EN MR Na7 Measurements and Recording MR 8 20 MiCOM P741 P742 P743 MR FIGURE 1 CONNECTED TO THE CENTRAL UNIT FIGURE 2 CONNECTED TO A PERIPHERAL UNIT ...

Page 323: ...Firmware Design P74x EN FD Na7 MiCOM P741 P742 P743 FD FIRMWARE DESIGN Hardware Suffix J and K Software Version 51 ...

Page 324: ...P74x EN FD Na7 Firmware Design MiCOM P741 P742 P743 ...

Page 325: ... software 9 1 2 6 Disturbance recorder 9 2 HARDWARE MODULES 10 2 1 Processor board 10 2 2 Coprocessor board 10 2 3 Communication board 11 2 4 Internal communication buses 11 2 5 Input module 12 2 5 1 Transformer board 13 2 5 2 Input board 13 2 5 3 Universal opto isolated logic inputs 14 2 6 Power supply module including output relays 14 2 7 Power supply board including EIA RS 485 communication int...

Page 326: ...re 22 3 5 3 Signal processing 22 3 5 4 Programmable scheme logic 23 3 5 5 Function key interface P741 and P743 23 3 5 6 Event and fault recording 23 3 5 7 Disturbance recorder 24 4 SELF TESTING DIAGNOSTICS 25 4 1 Start up self testing 25 4 1 1 System boot 25 4 1 2 Initialization software 25 4 1 3 Platform software initialization monitoring 26 4 2 Continuous self testing 26 ...

Page 327: ... with the P741 relay In P741 the co processor board controls the communication boards and manages the communication with others P741 of the system if present 1 1 3 Internal Communication board Only present within P741 relay The communication board manages the communication with the P742 and P743 relays 1 1 4 Analogue Input module The Analogue input module is only present in P742 and P743 relays Th...

Page 328: ...e for the relays P741 P742 and P743 The IRIG B board can only be used in P741 relay and is controlled by the main board All modules are connected by a parallel data and address bus which allows the processor board to send and receive information to and from the other modules as required There is also a separate serial data bus for conveying sample data from the input module to the coprocessor Foll...

Page 329: ...FIGURE 2 P742 P743 ARCHITECTURE 1 1 8 Second rear comms and EIA RS 232 InterMiCOM board optional P741 and P743 The optional second rear port is designed typically for dial up modem access by protection engineers operators when the main port is reserved for SCADA traffic Communication is via ...

Page 330: ...lize the same within the relay case The redundant Ethernet board option see P4x4 EN REB user guide provides a redundant connection useful to safe exchanges between two relays or for specific network applications The different options use SHP RSTP or DHP protocol with IRIG B modulated or un modulated port All modules are connected by a parallel data and address bus that allows the processor board t...

Page 331: ...stem is responsible for scheduling the processing of these tasks such that they are carried out in the time available and in the desired order of priority For coprocessor board software a sequencer manages all the functions implemented on the coprocessor board Each function is executed at fixed frequency consequently the CPU load of the coprocessor is fixed and independent of the network s frequen...

Page 332: ...he relay hardware For example the system services software controls the boot of the relay s software from the non volatile flash EPROM memory at power on and provides driver software for the user interface via the LCD and keypad and via the serial communication ports The system services software provides an interface layer between the control of the relay s hardware and the rest of the relay softw...

Page 333: ...al unit and the peripheral units This includes the control of data exchanged transmitted and the synchronisation of peripheral units With this object the communication software interfaces with the sequencer used in coprocessors boards 1 2 5 Protection control software The protection and control software performs the calculations for all of the protection algorithms of the relays This includes digi...

Page 334: ...ory is sub divided into 2 groups 4MB of flash memory for non volatile storage of software code present setting values text configuration data latched data signals from control inputs function keys LEDs relay outputs and 4MB of battery backed up SRAM for the storage of disturbance event fault and maintenance record data 2 2 Coprocessor board The co processor board is based around a TMS320VC5402 16 ...

Page 335: ...tion boards P741 These two interconnection buses are very similar Both are based on a 64 way ribbon cable The ribbon cable carries the data and address bus signals in addition to control signals and all power supply lines Operation of the bus is driven by the main processor board that operates as a master while all other modules within the relay are slaves The DSP processor has a built in serial p...

Page 336: ...he interface between the coprocessor board and the analogue and digital signals coming into the relay The input module consists of two PCBs the main input board and a transformer board The P742 and P743 provide four current inputs 3 phases and neutral P741 relay don t use this board FIGURE 5 MAIN INPUT BOARD ...

Page 337: ...ing multiplexed into a single analogue to digital converter chip The A D converter provides 16 bit resolution and a serial data stream output The digital input signals are opto isolated on this board to prevent excessive voltages on these inputs causing damage to the relay s internal circuitry FIGURE 6 MAIN INPUT BOARD The signal multiplexing arrangement provides for 16 analogue channels to be sam...

Page 338: ... for the output relays P742 and P743 The power supply board also contains the input and output hardware for the rear communication port which provides an EIA RS 485 communication interface 2 7 Power supply board including EIA RS 485 communication interface One of three different configurations of the power supply board can be fitted to the relay This will be specified at the time of order and depe...

Page 339: ...tten to or read from using the parallel data bus A high speed output relay board contains a hybrid of MOSFET solid state devices SSD in parallel with high capacity relay output contacts The MOSFET has a varistor across it to provide protection which is required when switching off inductive loads as the stored energy in the inductor causes a reverse high voltage which could damage the MOSFET When t...

Page 340: ...ds 2 11 1 1 Second rear communications InterMiCOM teleprotection board in P741 P743 On ordering this board within a relay both 2nd rear communications and InterMiCOM will become connection and setting options The user may then enable either one or both as demanded by the installation There is a hardware option of a second rear communications port which will run the Courier language This can be use...

Page 341: ...ified by the IEC 61850 standard It is recommended that each copper Ethernet cable is limited to a maximum length of 3 meters and confined within one bay cubicle When using IEC 61850 communications through the Ethernet card the rear EIA RS 485 and front EIA RS 232 ports are also available for simultaneous use both using the Courier protocol 2 13 Mechanical layout The case materials of the relay are...

Page 342: ...f five sections The real time operating system The system services software The communication software The platform software The protection control software This section describes in detail the latter two of these the platform software and the protection control software which between them control the functional behaviour of the relay The figure below shows the structure of the relay software FIGU...

Page 343: ...s to ensure that they are processed in the time available and in the desired order of priority The operating system is also responsible in part for controlling the communication between the software tasks through the use of operating system messages 3 2 System services software As shown in Figure 4 the system services software provides the interface between the relay s hardware and the higher leve...

Page 344: ...P74x EN FD Na7 Firmware Design FD 9 20 MiCOM P741 P742 P743 FD FIGURE 10 P74x SYSTEM OVERVIEW ...

Page 345: ...l support settings The settings are maintained in non volatile memory The platform software s management of the settings database includes the responsibility of ensuring that only one user interface modifies the settings of the database at any one time This feature is employed to avoid conflict between different parts of the software during a setting change For changes to protection settings and d...

Page 346: ...t send frames on optical fibres in diffusion towards all peripheral units So they received data at the same instant this reception signal starts the acquisition of analogue signal The main signal processing algorithms are Flux calculation and prediction algorithm to detect CT saturation Zero sequence supervision Detection of signal variation Local threshold to block busbar protection on external f...

Page 347: ...of the PSL is implemented through the PC support package S1 3 5 5 Function key interface P741 and P743 The ten function keys interface directly into the PSL as digital input signals and are processed based on the PSL s event driven execution However a change of state is only recognized when a key press is executed on average for longer than 200 ms The time to register a change of state depends on ...

Page 348: ... disturbance recorder is supplied with data by the protection and control task once per cycle The disturbance recorder collates the data that it receives into the required length disturbance record It attempts to limit the demands it places on memory space by saving the analogue data in compressed format whenever possible This is done by detecting changes in the analogue input signals and compress...

Page 349: ...n is unavailable This is signalled by the Healthy LED on the front of the relay which will illuminate when the relay has passed all of the tests and entered operation If the testing detects a problem the relay will remain out of service until it is manually restored to working order The operations that are performed at start up are as follows 4 1 1 System boot The integrity of the flash memory is ...

Page 350: ...opto isolated inputs and the relay contacts is checked by the data acquisition function every time it is executed The operation of the analogue data acquisition system is continuously checked by the acquisition function every time it is executed by means of sampling the reference voltages The operation of the IRIG B board is checked where it is fitted by the software that reads the time and date f...

Page 351: ...Firmware Design P74x EN FD Na7 MiCOM P741 P742 P743 FD 9 27 FD ...

Page 352: ...Commissioning P74x EN CM Na7 MiCOM P741 P742 P743 CM COMMISSIONING Hardware Suffix J and K Software Version 51 ...

Page 353: ...P74x EN CM Na7 Commissioning MiCOM P741 P742 P743 ...

Page 354: ...Input opto isolators 14 4 2 6 Output relays 14 4 2 7 Rear communications port 15 4 2 8 Second rear communications port 16 4 2 9 Current differential communications 19 4 2 10 Current inputs P742 P743 only 19 5 COMMISSIONING TEST MENU 21 5 1 Test mode 21 5 1 1 Test mode for PU 21 5 1 2 Test mode for CU 21 5 2 Busbar Monitoring only in CU 22 5 3 Busbar BB Circuit Breaker Fail CBF Disable only in CU 2...

Page 355: ...43 38 11 SETTING RECORD 46 11 1 Central Unit P741 46 11 1 1 Relays Setting configuration 46 11 1 2 Disturbance recorder settings 48 11 1 3 Control and support settings 49 11 1 4 Protection settings 56 11 2 Peripheral Units P742 P743 59 11 2 1 Relays Setting configuration 59 11 2 2 Disturbance recorder settings 61 11 2 3 Control and support settings 63 11 2 4 Protection settings 70 ...

Page 356: ...e Unless previously agreed to the contrary the customer will be responsible for determining the application specific settings to be applied to the relay and for testing of any scheme logic applied by external wiring and or configuration of the relay s internal programmable scheme logic Blank commissioning test and setting records are provided at the end of this chapter for completion as required A...

Page 357: ...g the secondary front cover allows access to all keys so that settings can be changed LED s and alarms reset and fault and event records cleared However menu cells those have access levels higher than the default level will require the appropriate password to be entered before changes can be made Alternatively if a portable PC is available together with suitable setting software such as S1 the men...

Page 358: ...y contain many of the above features in one unit 3 2 Optional equipment Multi finger test plug type P992 if test block type P991 installed or MMLB if using MMLG blocks An electronic or brushless insulation tester with a dc output not exceeding 500V for insulation resistance testing when required This equipment will be required only if the dielectric test has not been done during the manufacturing ...

Page 359: ...4 1 With the relay de energised The following group of tests should be carried out without the auxiliary supply being applied to the relay and with the trip circuit isolated The current and voltage transformer connections must be isolated from the relay for these checks If a P991 test block is provided the required isolation can easily be achieved by inserting test plug type P992 which effectively...

Page 360: ...cular installation Ensure that the case earthing connections bottom left hand corner at the rear of the relay case are used to connect the relay to a local earth bar using an adequate conductor 4 1 2 Current transformer shorting contacts If required the current transformer shorting contacts can be checked to ensure that they close when the heavy duty terminal block block reference B for P742 and A...

Page 361: ...ewdriver is recommended to minimise the risk of the screws being left in the terminal block or lost Pull the terminal block away from the rear of the case and check with a continuity tester that all the shorting switches being used are closed Table 1 shows the terminals between which shorting contacts are fitted Shorting contact between terminals Current input P742 1A common 5A P743 1A common 5A Ι...

Page 362: ...ected together The main groups of relay terminals are a Current transformer circuits b Auxiliary voltage supply c Field voltage output and opto isolated control inputs d Relay contacts e Case earth The insulation resistance should be greater than 100MΩ at 500V On completion of the insulation resistance tests ensure all external wiring is correctly reconnected to the relay 4 1 4 External wiring Che...

Page 363: ...741 P742 P743 Open Closed TABLE 2 WATCHDOG CONTACT STATUS 4 1 6 Auxiliary supply The P74x relay can be operated from either a dc only or an ac dc auxiliary supply depending on the relay s nominal supply rating The incoming voltage must be within the operating range specified in Table 3 Without energising the relay measure the auxiliary supply to ensure it is within the operating range Nominal supp...

Page 364: ...aintained via the optional Inter Range Instrumentation Group standard B IRIG B port on the rear of the P741 relay 4 2 2 1 With an IRIG B signal for Central Unit P741 only If a satellite time clock signal conforming to IRIG B is provided and the P741 relay has the optional IRIG B port fitted the satellite clock equipment should be energised To allow the relay s time and date to be maintained from a...

Page 365: ...g the alarm and out of service LEDs The alarm and out of service LED s can be tested using the COMMISSION TESTS menu column Set cell COMMISSION TESTS Test Mode to Out Of Service on the P741 then select at least one zone or 50BF Disabled on the P742 P743 Check that the out of service LED illuminates continuously and the alarm LED flashes It is not necessary to return cell COMMISSION TESTS Test Mode...

Page 366: ...elay However the trip LED will operate during the setting checks performed later Therefore no further testing of the trip LED is required at this stage Please note that the CB control function does not exist in the Central Unit P741 as only the Peripheral Unit P742 P743 may trip close the local circuit breakers 4 2 3 3 Testing the user programmable LEDs To test the user programmable LED s set cell...

Page 367: ...s not the case before connecting the field voltage otherwise damage to the relay may result The status of each opto isolated input can be viewed using either cell SYSTEM DATA Opto I P Status or COMMISSION TESTS Opto I P Status a 1 indicating an energised input and a 0 indicating a de energised input When each opto isolated input is energised one of the characters on the bottom line of the display ...

Page 368: ...2 IEC60870 5 103 communication IEC 60870 5 103 communication systems are designed to have a local Master Station and this should be used to verify that the relay s rear port is working Ensure that the communication mode and baud rate settings in the application software are set the same as those in cells COMMUNICATIONS Comms Mode and COMMUNICATIONS Baud Rate of the relay Check that using the Maste...

Page 369: ... from relay side of the protocol converter If a KITZ protocol converter is not installed it may not be possible to connect the PC to the relay installed In this case a KITZ protocol converter and portable PC running appropriate software should be temporarily connected to the relays second rear communications port configured for K Bus However as the installed protocol converter is not being used in...

Page 370: ...2 Check that communications can be established with this relay using the portable PC 4 2 8 4 EIA RS 232 InterMiCOM communications 4 2 8 5 InterMiCOM loopback testing diagnostics The Loopback test facilities located within the 15 INTERMICOM COMMS column of the relay menu provide a user with the ability to check the software and hardware of the InterMiCOM signaling If INTERMICOM COMMS column is not ...

Page 371: ...0F13 Test Loopback cell to Internal and repeat the Test Pattern test as described above In this mode it is not necessary to make wiring changes 4 2 8 6 Loopback removal and establishing service condition Once the above loopback tests are completed switch the InterMiCOM channel back in to service by setting the 1550 Loopback Mode to Disabled and restoring the Tx and Rx connections The following che...

Page 372: ...tral unit by disconnecting the optical fibre an alarm Fibre Com Error should appear 4 2 10 Current inputs P742 P743 only This test verifies that the accuracy of current measurement is within the acceptable tolerances All relays will leave the factory set for operation at a system frequency of 50Hz If operation at 60Hz is required then this must be set in cell SYSTEM DATA Frequency Apply current eq...

Page 373: ... However an additional allowance must be made for the accuracy of the test equipment being used Cell in MEASUREMENTS 1 column 02 Corresponding CT Ratio in CT and VT RATIOS column 0A of menu IA Magnitude IB Magnitude IC Magnitude IN Magnitude Phase CT Primary __ Phase CT Secondary TABLE 6 CT RATIO SETTINGS ...

Page 374: ...tral unit can keep the zone elements in service as the contribution of this feeder will be zero The CT is still used by the Check Zone element Whilst in this mode the peripheral unit can be tested locally for example secondary injections tests can be carried out The system is stable because during the current injection there is a differential current in the CZ but not in the Zone When a test mode ...

Page 375: ...ection only from the breaker failure protection Zones can be in busbar monitoring when others zones remain active 5 3 Busbar BB Circuit Breaker Fail CBF Disable only in CU The BB CBF disable cell is used to select the status of each zone This cell has a binary string with one bit per zone which can be set to 1 to disable busbar breaker failure protection and 0 to maintain the zone in operating mod...

Page 376: ...ated under the bottom access cover This method is preferred for transferring function settings as it is much faster and there is less margin for error If the programmable scheme logic other than the default settings with which the relay is supplied is to be used then this is the only way of changing the settings If a setting file has been created for the particular application and provided on a di...

Page 377: ...t transformer see above 2 Open the wiring by inserting a test block 3 Connect the current testing circuit of the test block phase neutral 4 Inject a current 1A recommended and measure the voltage at the resistive circuit terminals 5 An Excel tool is available in order to help calculate the values below accurately 6 Calculate the load resistance RB per phase using the following equation RB Umeasure...

Page 378: ...1 RBph RBN is close to 1 P3747ENc V A A B C N CT A CT B CT C Short circuit of the secondary winding of the current transformer HV site P992 or MMLG PU IA IB IC IN Insertion of the test block to open current circuit RBA RAB RAN RBN 2 RBN RAN RBA RBB RAB RBA RBC RCN RBN ...

Page 379: ...ese values 6 3 Demonstrate Correct Relay Operation The purpose of these tests is as follows To determine that the primary protection function of the relay current differential can trip according to the correct application settings To verify correct setting of any backup phase overcurrent protection To verify correct assignment of the inputs relays and trip contacts by monitoring the response to a ...

Page 380: ... one peripheral unit is available A P741 Central Unit P742 3 Peripheral Unit 1 FO Test Box I2 P3749ENa FIGURE 7 CONNECTION FOR BIAS CHARACTERISTIC TESTING An increasing current I2 is injected into a phase and neutral of the PU1 which is used as differential and bias current Idiff Ibias I2 K2 Zone percentage bias Characteristic limit Idiff ID 2 KCZ Check Zone percentage bias Characteristic limit Id...

Page 381: ...red whenever possible Note The 2 PUs can have different CT ratios This must be taken into account when injecting at the CT secondary side A A P741 Central Unit P742 3 Peripheral Unit 1 P742 3 Peripheral Unit 2 FO FO Test Box I1 I2 P3748ENa FIGURE 8 CONNECTION FOR BIAS CHARACTERISTIC TESTING CENTRALISED SOLUTION Note The easiest way to test the thresholds is to inject an increasing slope for I1 and...

Page 382: ...STS column in the menu scroll down and change cells Monitor Bit 1 to BUSBAR_TRIPPING Doing so cell Test Port Status will appropriately set or reset the bits that now represent BUSBAR_TRIPPING with the rightmost bit representing Busbar Trip From now on you should monitor the indication of Test Port Status Make a note of which elements need to be re enabled or re set after testing Test of ID 2 ID 1 ...

Page 383: ...trip condition phase A B and C The associated terminal numbers can be found in the external connection diagrams Connect the output relay so that its operation will trip the test set and stop the timer Connect the current output of the test set to the A phase current transformer input of the relay Ensure that the timer will start when the current is applied to the relay 6 3 2 1 1 Perform the test E...

Page 384: ...sabled for testing purposes must have their original settings restored in the CONFIGURATION column 6 3 3 Breaker Failure Protection 6 3 3 1 Separate external 50BF protection to the busbar protection P3751ENa PU4 PU5 PU3 PU1 PU2 CB Fail External Fault FIGURE 9 SEPARATE EXTERNAL 50BF PROTECTION TO THE BUSBAR PROTECTION For example as shown in the Figure 9 we simulate a CB fail in feeder 1 PU1 Theref...

Page 385: ...ip order is equal to the fault clearance time 13ms tBF3 pick up time For example if tBF3 50ms and the fault is cleared after 60ms the PU displayed value will be 23ms To test the backtrip Do the same tests as for retrip however apply a faulty current for more than tBF4 and check that the backtrip signal is sent to the CU Check that PU2 and PU3 connected to the bus section 1 are tripped by the CU No...

Page 386: ...ith 200ms drop off The backtrip order is equal to the maximum between the fault clearance time and 250 ms tBF4 pick up time For example if tBF4 200ms and the fault is cleared before 450ms the CU displayed value will be 450ms and the PU displayed value will be 650ms For example if tBF4 200ms and the fault is cleared in 500ms the CU displayed value will be 500ms and the PU displayed value will be 70...

Page 387: ...xtract the settings from the relay using a portable PC running the appropriate software via the front EIA RS 232 port located under the bottom access cover Compare the settings transferred from the relay with the original written application specific setting record For cases where the customer has only provided a printed copy of the required settings but a portable PC is available Step through the...

Page 388: ...d connecting it to an optical power meter The mean level should be in the range 16 8 dBm to 25 4dBm If the mean level is outside of this range check the size and type of fibre being used When connecting or disconnecting optical fibres care should be taken not to look directly into the transmit port or end of the optical fibre Measure and record the optical power of the Channel 1 transmit port usin...

Page 389: ...ues of the secondary phase currents with the relay s measured values which can be found in the MEASUREMENTS 1 menu column Note Under normal load conditions the earth fault function will measure little if any current It is therefore necessary to simulate a phase to neutral fault This can be achieved by temporarily disconnecting one or two of the line current transformer connections to the relay and...

Page 390: ...ection or scheme diagram Ensure that the relay has been restored to service by checking that cell COMMISSION TESTS Test Mode is set to Disabled If the menu language has been changed to allow accurate testing it should be restored to the customer s preferred language If a P991 MMLG test block is installed remove the P992 MMLB test plug and replace the cover so that the protection is put into servic...

Page 391: ...number Rated current In Auxiliary voltage Vx Test Equipment Used This section should be completed to allow future identification of protective devices that have been commissioned using equipment that is later found to be defective or incompatible but may not be detected during the commissioning procedure Overcurrent test set Model Serial No Optical power meter Model Serial No Insulation tester Mod...

Page 392: ...hecked against diagram Yes No Test block connections checked Yes No na 4 1 5 Watchdog Contacts auxiliary supply off Terminals 11 and 12 Contact closed Yes No Contact resistance ______Ω Not measured Terminals 13 and 14 Contact open Yes No 4 1 6 Measured auxiliary supply _____________V ac dc 4 2 With the relay energised 4 2 1 Watchdog Contacts auxiliary supply on Terminals 11 and 12 Contact open Yes...

Page 393: ...o Opto input 4 working Yes No Opto input 5 working Yes No Opto input 6 working Yes No Opto input 7 working Yes No Opto input 8 working Yes No For P742 Opto input 9 working Yes No na Opto input 10 working Yes No na Opto input 11 working Yes No na Opto input 12 working Yes No na Opto input 13 working Yes No na Opto input 14 working Yes No na Opto input 15 working Yes No na Opto input 16 working Yes ...

Page 394: ...______Ω nm Relay 7 Working Yes No Contact resistance N O __________Ω nm N C __________Ω nm na Relay 8 Working Yes No na Contact resistance N O __________Ω nm N C __________Ω nm na Relay 9 Working Yes No na Contact resistance __________Ω nm Relay 10 Working Yes No na Contact resistance __________Ω nm Relay 11 Working Yes No na Contact resistance N O __________Ω nm N C __________Ω nm na Relay 12 Wor...

Page 395: ...a Contact resistance __________Ω nm Relay 19 Working Yes No na Contact resistance N O __________Ω nm N C __________Ω nm Relay 20 Working Yes No na Contact resistance N O __________Ω nm N C __________Ω nm 4 2 7 Current Inputs Complete or delete as appropriate Displayed Current Primary Secondary Phase CT Ratio na not applicable _______ na Input CT Applied value Displayed value ΙA ______________A ___...

Page 396: ...r slope pickup ________________A 5 2 5 Protection function timing tested Yes No Applied current ________________A Expected operating time ________________s Measured operating time ________________s 5 4 Application specific function settings verified Yes No na Application specific programmable scheme logic tested Yes No na Signal strength received by P742 3 Channel 1 __________dBm na Signal strengt...

Page 397: ...e status change from OK to FAIL upon pin 2 3 disconnection Yes No Not applicable Channel status change from OK to FAIL upon pin 2 3 disconnection Yes No Not applicable Did IM H W status remain OK throughout the loopback testing Yes No Did amber LED and IM loopback LCD alarm and loopback status OK clear on disabling the loopback mode Yes No Enter Rx direct count ______________ Not applicable Enter ...

Page 398: ...urrents Applied value Displayed value ΙA _______________A _____________A ΙB _______________A _____________A ΙC _______________A _____________A ΙN _______________A na _____________A na 7 3 Differential current checked Yes No 8 Final Checks Test wiring removed Yes No na Disturbed customer wiring re checked Yes No na Test mode disabled Yes No Circuit breaker operations counter reset Yes No na Current...

Page 399: ...x Setting Groups Used Group 1 Yes No Group 2 Yes No Group 3 Yes No Group 4 Yes No 11 1 1 Relays Setting configuration 0000 SYSTEM DATA Language English Francais Deutsch Espanol Description Plant Reference Model Number Serial Number Frequency 50hz 60Hz Comms Level Relay Address Plant Status Control Status Active Group Software Ref 1 Software Ref 2 Not displayed Opto I P Status Relay O P Status Alar...

Page 400: ...t DST Enable Disabled Fixed Flexible 0900 CONFIGURATION Setting Group Select via Menu Select via Optos Setting Group 1 Disabled Enabled Setting Group 2 Disabled Enabled Setting Group 3 Disabled Enabled Setting Group 4 Disabled Enabled Busbar option Invisible Visible Diff Busbar Prot Disabled Enabled Input Labels Invisible Visible Output Labels Invisible Visible Recorder Control Invisible Visible D...

Page 401: ...ISTURB RECORDER Duration _____________s Trigger Position _____________ Trigger Mode Single Extended Analog Channel 1 Analog Channel 2 Analog Channel 3 Analog Channel 4 Analog Channel 5 Analog Channel 6 Analog Channel 7 Analog Channel 8 Digital Input 1 Digital Input 2 Digital Input 3 Digital Input 4 Digital Input 5 Digital Input 6 Digital Input 7 Digital Input 8 Digital Input 9 Digital Input 10 Dig...

Page 402: ...Event Disabled Enabled Relay O P Event Disabled Enabled Opto Input Event Disabled Enabled General Event Disabled Enabled Fault Rec Event Disabled Enabled Maint Rec Event Disabled Enabled Protection Event Disabled Enabled 0D00 MEASURE T SETUP Default Display Local Values Primary secondary Remote Values Primary secondary Remote2 Values Primary secondary 0E00 COMMUNICATIONS RP1 Protocol RP1 Address _...

Page 403: ...N TESTS Monitor Bit 1 ________________ Monitor Bit 2 ________________ Monitor Bit 3 ________________ Monitor Bit 4 ________________ Monitor Bit 5 ________________ Monitor Bit 6 ________________ Monitor Bit 7 ________________ Monitor Bit 8 ________________ Test Mode Disabled Test Mode Blocked Test Pattern ________________ 1100 OPTOS CONFIG Global Nominal V _______ _______V Opto Input 1 _______ ____...

Page 404: ...ol input 4 Control input 5 Control input 6 Control input 7 Control input 8 Control input 9 Control input 10 Control input 11 Control input 12 Control input 13 Control input 14 Control input 15 Control input 16 Control input 17 Control input 18 Control input 19 Control input 20 Control input 21 Control input 22 Control input 23 Control input 24 Control input 25 Control input 26 Control input 27 Con...

Page 405: ...____ Rx Block Count ______________ Rx NewDataCount ______________ Rx ErroredCount ______________ Lost messages ______________ Elapsed ime ______________ Reset Statistics Yes No Ch Diagnostics Invisible Visible Data CD Status OK Fail Absent Unavailable FrameSync Status OK Fail Absent Unavailable Message Status OK Fail Absent Unavailable Channel Status OK Fail Absent Unavailable IM H W Status OK Fai...

Page 406: ...d NA 0 1 NA IM1 ______ms NA IM2 ______ms NA IM3 ______ms NA IM4 ______ms NA IM5 ______ms NA IM6 ______ms NA IM7 ______ms NA IM8 ______ms NA 1700 FUNCTION KEYS Fn key Status ______________ Status Mode Label Disabled Locked Unlock Toggled Normal Fn key 1 _________ Fn key 2 _________ Fn key 3 _________ Fn key 4 _________ Fn key 5 _________ Fn key 6 _________ Fn key 7 _________ Fn key 8 _________ Fn k...

Page 407: ...put 14 _______________________ Control input 14 Control input 15 _______________________ Control input 15 Control input 16 _______________________ Control input 16 Control input 17 _______________________ Control input 17 Control input 18 _______________________ Control in18put Control input 19 _______________________ Control inpu19t Control input 20 _______________________ Control input 20 Contro...

Page 408: ...put 14 _______________________ Control input 14 Control input 15 _______________________ Control input 15 Control input 16 _______________________ Control input 16 Control input 17 _______________________ Control input 17 Control input 18 _______________________ Control in18put Control input 19 _______________________ Control inpu19t Control input 20 _______________________ Control input 20 Contro...

Page 409: ...________A ________A ________A Phase Slope k1 ________ ________ ________ ________ ID 1 Alarm Timer ________s ________s ________s ________s Sensitive earth fault element Diff Earth Fault Enabled Disabled Enabled Disabled Enabled Disabled Enabled Disabled If visible Ibias Ph Cur ________A ________A ________A ________A CZ Parameters If visible Earth Slope kNCZ ________ ________ ________ ________ If vi...

Page 410: ...________s ________s ________s SEF Block Alarm Enabled Disabled Enabled Disabled Enabled Disabled Enabled Disabled Confirm Reset PU Enabled Disabled Enabled Disabled Enabled Disabled Enabled Disabled 3ph Block Alarm Enabled Disabled Enabled Disabled Enabled Disabled Enabled Disabled Delay Trip Status Enabled Disabled Enabled Disabled Enabled Disabled Enabled Disabled Delay Trip Timer ________s ____...

Page 411: ...ult _________ Default _________ Default _________ Default Relay 2 _________ Default _________ Default _________ Default _________ Default Relay 3 _________ Default _________ Default _________ Default _________ Default Relay 4 _________ Default _________ Default _________ Default _________ Default Relay 5 _________ Default _________ Default _________ Default _________ Default Relay 6 _________ Defa...

Page 412: ...x Setting Groups Used Group 1 Yes No Group 2 Yes No Group 3 Yes No Group 4 Yes No 11 2 1 Relays Setting configuration 0000 SYSTEM DATA Language English Francais Deutsch Espanol Description Plant Reference Model Number Serial Number Frequency 50hz 60Hz Comms Level Relay Address Plant Status Control Status Active Group Software Ref 1 Software Ref 2 Not displayed Opto I P Status Relay O P Status Alar...

Page 413: ...Disabled Enabled Dead Zone Prot Invisible Visible BB Trip Confirm Disabled Enabled Overcurrent Prot Disabled Enabled Earth Fault Prot Disabled Enabled CB Fail I Disabled Enabled Input Labels Invisible Visible Output Labels Invisible Visible CT VT Ratios Invisible Visible Recorder Control Invisible Visible Disturb Recorder Invisible Visible Measure t Setup Invisible Visible Comms Settings Invisible...

Page 414: ... H L Digital Input 3 Input 3 Trigger No trigger Trigger L H Trigger H L Digital Input 4 Input 4 Trigger No trigger Trigger L H Trigger H L Digital Input 5 Input 5 Trigger No trigger Trigger L H Trigger H L Digital Input 6 Input 6 Trigger No trigger Trigger L H Trigger H L Digital Input 7 Input 7 Trigger No trigger Trigger L H Trigger H L Digital Input 8 Input 8 Trigger No trigger Trigger L H Trigg...

Page 415: ...gger No trigger Trigger L H Trigger H L Digital Input 22 Input 22 Trigger No trigger Trigger L H Trigger H L Digital Input 23 Input 23 Trigger No trigger Trigger L H Trigger H L Digital Input 24 Input 24 Trigger No trigger Trigger L H Trigger H L Digital Input 25 Input 25 Trigger No trigger Trigger L H Trigger H L Digital Input 26 Input 26 Trigger No trigger Trigger L H Trigger H L Digital Input 2...

Page 416: ...____s If visible CB Superv Timer ________________s 0A00 CT AND VT RATIOS Phase CT Primary ________________A Phase CT Secondary ________________A RBPh RBN ________________ Power parameters Standard Input British standard IEC British Knee Voltage Vk ________________ In V IEC Rated Burden VA ________________A IEC Rated Burden Ohm ________________Ω IEC KSCC ________________ IEC RCT Sec y _____________...

Page 417: ..._____________ NIC Tunl Timeout ________________ NIC Link Report Alarm Event None NIC Link Timeout ________________s 2nd rear port RP2 Protocol RP2 Port Config KBus EIA RS 232 EIA RS 485 RP2 Comms Mode IEC60870 FT1 2 Frame 10 Bit No Parity RP2 Address ________________ RP2 InactivTimer ________________min RP2 Baud Rate ________________ 0F00 COMMISSION TESTS Monitor Bit 1 ________________ Monitor Bit...

Page 418: ...______V Opto Input 10 _______ _______V Opto Input 11 _______ _______V Opto Input 12 _______ _______V Opto Input 13 _______ _______V Opto Input 14 _______ _______V Opto Input 15 _______ _______V Opto Input 16 _______ _______V Opto Input 17 _______ _______V Opto Input 18 _______ _______V Opto Input 19 _______ _______V Opto Input 20 _______ _______V Opto Input 21 _______ _______V Opto Input 22 ______...

Page 419: ...ol input 4 Control input 5 Control input 6 Control input 7 Control input 8 Control input 9 Control input 10 Control input 11 Control input 12 Control input 13 Control input 14 Control input 15 Control input 16 Control input 17 Control input 18 Control input 19 Control input 20 Control input 21 Control input 22 Control input 23 Control input 24 Control input 25 Control input 26 Control input 27 Con...

Page 420: ..._________ Rx Block Count ______________ Rx NewDataCount ______________ Rx ErroredCount ______________ Lost messages ______________ Elapsed ime ______________ Reset Statistics Yes No Ch Diagnostics Invisible Visible Data CD Status OK Fail Absent Unavailable FrameSync Status OK Fail Absent Unavailable Message Status OK Fail Absent Unavailable Channel Status OK Fail Absent Unavailable IM H W Status O...

Page 421: ...d NA 0 1 NA IM1 ______ms NA IM2 ______ms NA IM3 ______ms NA IM4 ______ms NA IM5 ______ms NA IM6 ______ms NA IM7 ______ms NA IM8 ______ms NA 1700 FUNCTION KEYS P743 only Fn key Status ______________ Status Mode Label Disabled Locked Unlock Toggled Normal Fn key 1 _________ Fn key 2 _________ Fn key 3 _________ Fn key 4 _________ Fn key 5 _________ Fn key 6 _________ Fn key 7 _________ Fn key 8 ____...

Page 422: ..._ Control input 14 Control input 15 _______________________ Control input 15 Control input 16 _______________________ Control input 16 Control input 17 _______________________ Control input 17 Control input 18 _______________________ Control in18put Control input 19 _______________________ Control inpu19t Control input 20 _______________________ Control input 20 Control input 21 __________________...

Page 423: ... ________s ________s 3500 OVERCURRENT Group 1 Settings Group 2 Settings Group 3 Settings Group 4 Settings Ι 1 Function ______ ______ ______ ______ with 1 Disabled 2 DT 3 IEC S Inverse 4 IEC V Inverse 4 IEC E Inverse 5 UK LT Inverse 6 IEEE M Inverse 7 IEEE V Inverse 8 IEEE E Inverse 9 US Inverse 10 US ST Inverse If visible Ι 1 Current Set ________A ________A ________A ________A Ι 1 Time Delay _____...

Page 424: ...______ ______ with 1 Disabled 87BBP N blocking 2 High Set I 2 3 I 2 87BBP N 4 87BB P blocking 5 87BB N blocking 6 I 2 87BB P 7 I 2 87BB N If visible ΙN 2 Current Set ________A ________A ________A ________A ΙN 2 Time Delay ________s ________s ________s ________s 4500 CB FAIL I Group 1 Settings Group 2 Settings Group 3 Settings Group 4 Settings Control By both I 52a I 52a I 52a I 52a If visible Ι Cu...

Page 425: ...Default _________ Default _________ Default Opto Input 6 _________ Default _________ Default _________ Default _________ Default Opto Input 7 _________ Default _________ Default _________ Default _________ Default Opto Input 8 _________ Default _________ Default _________ Default _________ Default Opto Input 9 _________ Default _________ Default _________ Default _________ Default Opto Input 10 __...

Page 426: ...gs Group 4 Settings Relay 1 _________ Default _________ Default _________ Default _________ Default Relay 2 _________ Default _________ Default _________ Default _________ Default Relay 3 _________ Default _________ Default _________ Default _________ Default Relay 4 _________ Default _________ Default _________ Default _________ Default Relay 5 _________ Default _________ Default _________ Defaul...

Page 427: ...ay 16 _________ Default _________ Default _________ Default _________ Default Relay 17 _________ Default _________ Default _________ Default _________ Default Relay 18 _________ Default _________ Default _________ Default _________ Default Relay 19 _________ Default _________ Default _________ Default _________ Default Relay 20 _________ Default _________ Default _________ Default _________ Defaul...

Page 428: ...Maintenance P74x EN MT Na7 MiCOM P741 P742 P743 MT MAINTENANCE Hardware Suffix J and K Software Version 51 ...

Page 429: ...P74x EN MT Na7 Maintenance MiCOM P741 P742 P743 ...

Page 430: ...2 2 Opto isolators 3 1 2 3 Output relays 3 1 2 4 Measurement accuracy 3 1 3 Method of repair 4 1 3 1 Replacing the complete relay 4 1 3 2 Replacing a PCB 5 1 4 Recalibration 19 1 4 1 P74x relay 19 1 5 Changing the relay battery 19 1 5 1 Instructions for replacing the battery 19 1 5 2 Post modification tests 19 1 5 3 Battery disposal 19 1 6 Cleaning 20 ...

Page 431: ...P74x EN MT Ma7 Maintenance MT 11 2 MiCOM P741 P742 P743 MT ...

Page 432: ...of failure 1 2 Maintenance checks It is recommended that maintenance checks are performed locally i e at the substation itself Before carrying out any work on the equipment the user should be familiar with the contents of the safety section safety guide Pxxx SG 4LM 2 or later issue the technical data section and the ratings on the equipment rating label 1 2 1 Alarms The alarm status LED should fir...

Page 433: ...to limited access in the back of the cubicle and rigidity of the scheme wiring Replacing PCBs can reduce transport costs but requires clean dry conditions on site and higher skills from the person performing the repair However if the repair is not performed by an approved service centre the warranty will be invalidated Before carrying out any work on the equipment the user should be familiar with ...

Page 434: ...ccessible These screws secure the front panel to the relay Withdraw the relay carefully from the panel rack etc because it will be heavy due to the internal transformers To reinstall the repaired or replacement relay follow the above instructions in reverse ensuring that each terminal block is relocated in the correct position and the case earth IRIG B Central Unit only and fibre optic connections...

Page 435: ... accessible when the access covers are fitted and open These screws hold the relay in its mounting panel or cubicle When the screws have been removed the complete front panel can be pulled forward and separated from the metal case Caution should be observed at this stage because the front panel is connected to the rest of the relay circuitry by a 64 way ribbon cable Additionally from here on the i...

Page 436: ...sy 2nd rear port IRIG B mod Assy 2nd rear port only Assy Redundant Ethernet SHR Modulated IRIG B Assy Redundant Ethernet SHR non Modulated IRIG B Assy Redundant Ethernet RSTP Modulated IRIG B Assy Redundant Ethernet RSTP non Modulated IRIG B Assy Redundant Ethernet DHS Modulated IRIG B Assy Redundant Ethernet DHS non Modulated IRIG B ZN0007 001 ZN0049 004 ZN0049 001 ZN0049 002 ZN0049 003 ZN0025 00...

Page 437: ...21 001 ZN0021 002 ZN0021 003 2 Assy Relay Output ZN0019 001 3 Assy Opto Input ZN0017 012 6 Assy Coprocessor 2070273 003 9 Assy High break relay output ZN0042 001 23 Assy Standard Input Module GN0010 074 24 Input Module Univ Inputs only GN0010 089 29 Assembly Screen Plate GN0058 001 FIGURE 3 P742 PCB MODULE LOCATIONS VIEWED FROM FRONT ...

Page 438: ... 2nd ZN0071 001 ZN0071 002 ZN0071 005 ZN0071 006 ZN0071 007 ZN0071 008 7 Assy Coprocessor 2070273 003 8 Communication board 2070273 001 9 Assy High break relay output ZN0042 001 23 Assy Standard Input Module GN0010 074 24 Input Module Univ Inputs only GN0010 089 29 Assembly Screen Plate GN0058 001 FIGURE 4 P743 PCB MODULE LOCATIONS VIEWED FROM FRONT The 64 way ribbon cable to the front panel also ...

Page 439: ... can then be re assembled with a replacement PCB using the reverse procedure Ensure that the ribbon cable is reconnected to the main processor board and all eight screws are re fitted FIGURE 5 FRONT PANEL ASSEMBLY Refit the front panel using the reverse procedure to that given before After refitting and closing the access covers on size 60TE 80TE cases press at the location of the hinge assistance...

Page 440: ...as shown in Figure 6 Remove these screws carefully as they are not captive in the rear panel of the relay Gently pull the optional board forward and out of the case To help identify that the correct board has been removed Figure 7 shows the layout of the IRIG B board with IRIG B ZN0007 001 or ZN0049 004 or Ethernet ZN0049001 or Ethernet and IRIG B ZN0049001 or ZN0049 002 or ZN0049 003 or second re...

Page 441: ... 3 2 3 Replacement of the input module The input module comprises of two boards fastened together the transformer board and the input board The module is secured in the case by two screws on its right hand side accessible from the front of the relay as shown in Figure 8 Remove these screws carefully as they are not captive in the front plate of the module Input module Handle P3010ENa FIGURE 8 LOCA...

Page 442: ...ce section P74x EN CM 1 3 2 4 Replacement of the power supply board The power supply board is fastened to a relay board to form the power supply module and is located on the extreme left hand side of all differential busbar relays Pull the power supply module forward away from the rear terminal blocks and out of the case A reasonable amount of force will be required to achieve this due to the fric...

Page 443: ... to the rear terminal blocks Refit the front panel using the reverse procedure to that given in section After refitting and closing the access covers on size 60TE 80TE cases press at the location of the hinge assistance T pieces so that they click back into the front panel moulding Once the relay has been reassembled after repair it should be recommissioned in accordance with the instructions in s...

Page 444: ...acing the module in the relay case Once the relay has been reassembled after repair it should be recommissioned in accordance with the instructions in sections 1 to 8 inclusive of the commissioning and maintenance section P74x EN CM E2 SERIAL N o ZN0019 F P3762ENa FIGURE 11 TYPICAL RELAY BOARD 1 3 2 6 Replacement of the opto input high break and separate relay boards P741 P742 P743 To remove eithe...

Page 445: ...er refitting and closing the access covers on size 60TE 80TE cases press at the location of the hinge assistance T pieces so that they click back into the front panel moulding Once the relay has been reassembled after repair it should be recommissioned in accordance with the instructions in sections 1 to 8 inclusive of the commissioning and maintenance section P74x EN CM E1 C1 SERIAL N o 1 ZN0017 ...

Page 446: ...ify that the correct board has been replace Figure 18 illustrates the layout of the Coprocessor board with dual fibre optic communications channels fitted The Coprocessor board boards with a single communications channel used in relays for two ended feeders where dual redundant communications channels are not required use the same PCB layout but have fewer components fitted The replacement PCB sho...

Page 447: ... BOARD To help identify that the correct board has been removed Figure 14 illustrates the layout of the Comms board with dual fibre optic communications channels fitted The Comms board boards with a single communications channel used in relays for two ended feeders where dual redundant communications channels are not required use the same PCB layout but have fewer components fitted The replacement...

Page 448: ...e technical data section and the ratings on the equipment rating label 1 5 1 Instructions for replacing the battery Open the bottom access cover on the front of the relay Gently extract the battery from its socket If necessary use a small insulated screwdriver to prize the battery free Ensure that the metal terminals in the battery socket are free from corrosion grease and dust The replacement bat...

Page 449: ...ent transformer and voltage transformer connections are isolated to prevent any chance of an electric shock whilst cleaning The equipment may be cleaned using a lint free cloth dampened with clean water The use of detergents solvents or abrasive cleaners is not recommended as they may damage the relay s surface and leave a conductive residue ...

Page 450: ...Troubleshooting P74x EN TS Na7 MiCOM P741 P742 P743 TS TROUBLESHOOTING Hardware Suffix J and K Software Version 51 ...

Page 451: ...P74x EN TS Na7 Troubleshooting MiCOM P741 P742 P743 ...

Page 452: ...ERVICE LED ILLUMINATED ON POWER UP 8 6 ERROR CODE DURING OPERATION 9 7 MAL OPERATION OF THE RELAY DURING TESTING 20 7 1 Failure of output contacts 20 7 2 Failure of opto isolated inputs 20 7 3 Incorrect analog signals P742 or P743 21 7 4 PSL editor troubleshooting 21 7 4 1 Diagram reconstruction after recover from relay 21 7 4 2 PSL version check 21 8 REPAIR AND MODIFICATION PROCEDURE 22 ...

Page 453: ...P74x EN TS Na7 Troubleshooting TS 12 2 MiCOM P741 P742 P743 TS ...

Page 454: ...identified so that appropriate corrective action can be taken Should the relay have developed a fault it should be possible in most cases to identify which relay module requires attention The Maintenance section P74x EN MT advises on the recommended method of repair where faulty modules need replacing It is not possible to perform an on site repair to a faulted module In cases where a faulty relay...

Page 455: ...ult the section referenced to perform a more detailed analysis of the problem Symptom Refer To Relay fails to power up Section 4 Relay powers up but indicates error and halts during power up sequence Section 5 Relay Powers up but Out of Service LED is illuminated Section 6 Error during normal operation Section 7 Mal operation of the relay during testing Section 8 Table 1 Problem identification ...

Page 456: ... 1 is dc 2 is dc If auxiliary voltage is present and correct then proceed to test 2 Otherwise the wiring fuses in auxiliary supply should be checked 2 Do LEDs and LCD backlight illuminate on power up also check the N O watchdog contact for closing If they illuminate or the contact closes and no error code is displayed then error is probably in the main processor board front panel If they do not il...

Page 457: ...ntre stating the error code and relay information If the same code is displayed proceed to test 3 3 Error code Identification Following text messages in English will be displayed if a fundamental problem is detected preventing the system from booting Bus Fail address lines SRAM Fail data lines FLASH Fail format error FLASH Fail checksum Code Verify Fail The following hex error codes relate to erro...

Page 458: ...power up record error code displayed Error 0x0E080000 programmable scheme logic error due to excessive execution time If relay powers up successfully check programmable logic for feedback paths Other error codes will relate to software errors on the main processor board contact GE Table 3 Power up self test error ...

Page 459: ...this indicates the causes of the failure using bit fields Bit Meaning 0 The application type field in the model number does not match the software ID 1 The application field in the model number does not match the software ID 2 The variant 1 field in the model number does not match the software ID 3 The variant 2 field in the model number does not match the software ID 4 The protocol field in the m...

Page 460: ... relay via the front panel or in the Maintenance Records can offer a considerable amount of information about the source of the error The Hex Code is reported on the front user interface of the relay immediately prior to a reboot sequence If this code could not be observed use the Maintenance Records section of the View Records column to display the corresponding Decimal Code Hex Code Decimal Code...

Page 461: ...5012096 Excessive number of gates in PSL Restore defaults and download new PSL 0x0E080000 235405312 PSL excessive execution time Restore defaults and download new PSL Table 5 Error Codes Other error codes relate to problems within the main processor board software It will be necessary to contact GE with details of the problem for a full analysis EXTENDED LIST Hexa Code Decimal code Problem Verify ...

Page 462: ...nication problem Cortec or Coprocessor board or number of comms board 0x8371xxxx Boot Main to Coprocessor board communication problem Cortec or Coprocessor board or number of comms board 0x83720000 2205286400 Boot Main to Coprocessor board communication problem Cortec or Coprocessor board or number of comms board 0x83720001 2205286401 Boot Main to Coprocessor board communication problem Cortec or ...

Page 463: ... 2206269504 Boot firmware downloading error Contact Call Centre 0x83810080 2206269568 Boot firmware downloading error Contact Call Centre 0x83810100 2206269696 Boot firmware downloading error Contact Call Centre 0x83810200 2206269952 Boot firmware downloading error Contact Call Centre 0x83810400 2206270464 Boot firmware downloading error Contact Call Centre 0x83810800 2206271488 Boot firmware down...

Page 464: ...tact Call Centre 0x8542xxxx TASK SUP software error Contact Call Centre 0x86B0xxxx TASK CBF software error Contact Call Centre 0x86B1xxxx TASK CBF software error Contact Call Centre 0x86B2xxxx TASK CBF software error Contact Call Centre P741 INIT MODE CU_INIT_MAJOR 2000 System error Coprocessor firmware 4008 External autotest RAM Coprocessor 4010 Autotest interruptions Coprocessor 4018 Comm board ...

Page 465: ...oard 4 0203 Coprocessor to Comm board 4 communication Coprocessor or Comm board 4 0204 Coprocessor to Comm board 4 communication Coprocessor or Comm board 4 0205 Coprocessor to Comm board 4 communication Coprocessor or Comm board 4 0206 Coprocessor to Comm board 4 communication Coprocessor or Comm board 4 0207 Coprocessor to Comm board 4 communication no IT Coprocessor or Comm board 4 or Comm boar...

Page 466: ...unication Coprocessor or Comm board 0 2003 Coprocessor to Comm board 0 communication Coprocessor or Comm board 0 2004 Coprocessor to Comm board 0 communication Coprocessor or Comm board 0 2005 Coprocessor to Comm board 0 communication Coprocessor or Comm board 0 2006 Coprocessor to Comm board 0 communication Coprocessor or Comm board 0 2007 Coprocessor to Comm board 0 communication no IT Coprocess...

Page 467: ...cation Coprocessor or Comm board 6 0086 Coprocessor to Comm board 6 communication Coprocessor or Comm board 6 0087 Coprocessor to Comm board 6 communication no IT Coprocessor or Comm board 6 or Comm board 6 address 0101 Coprocessor to Comm board 5 communication Coprocessor or Comm board 5 0102 Coprocessor to Comm board 5 communication Coprocessor or Comm board 5 0103 Coprocessor to Comm board 5 co...

Page 468: ...oard 2 0805 Coprocessor to Comm board 2 communication Coprocessor or Comm board 2 0806 Coprocessor to Comm board 2 communication Coprocessor or Comm board 2 0807 Coprocessor to Comm board 2 communication no IT Coprocessor or Comm board 2 or Comm board 2 address 1001 Coprocessor to Comm board 1 communication Coprocessor or Comm board 1 1002 Coprocessor to Comm board 1 communication Coprocessor or C...

Page 469: ... Coprocessor communication Coprocessor or Main board 8004 Main to Coprocessor communication Coprocessor or Main board 8005 Main to Coprocessor communication Coprocessor or Main board 8006 Main to Coprocessor communication Coprocessor or Main board 8007 Main to Coprocessor communication no IT Coprocessor address or Coprocessor or Main board Logical OR See lines included in the logical OR See lines ...

Page 470: ...rocessor communication Coprocessor or Main board 8006 Main to Coprocessor communication Coprocessor or Main board 8007 Main to Coprocessor communication no IT Coprocessor address or Coprocessor or Main board Logical OR See lines included in the logical OR See lines included PU_OPER_PERIPH 0200 Analogue module acquisition problem Analogue module 0408 Relay 3 board missing Relay 3 board or Relay 3 b...

Page 471: ...y for this purpose If the output relay does operate then the problem must be in the external wiring to the relay If the output relay does not operate this could indicate a failure of the output relay contacts note that the self tests verify that the relay coil is being energized Ensure that the closed resistance is not too high for the continuity tester to detect Table 6 Failure of output contacts...

Page 472: ...uitable for the relay and or the type of connection Modem configuration is not valid Changes may be necessary when using a modem The connection cable is not wired correctly or broken See S1 connection configurations The option switches on any KITZ101 102 this is in use may be incorrectly set 7 4 1 Diagram reconstruction after recover from relay Although the extraction of a scheme from a relay is s...

Page 473: ...livery and invoice addresses Contact details 3 Send RMA form to your local contact 4 Receive from local service contact the information required to ship the product Your local service contact will provide you with all the information Pricing details RMA n Repair centre address If required an acceptance of the quote must be delivered before going to next stage 5 Send the product to the repair centr...

Page 474: ...SCADA Communications P74x EN SC Na7 MiCOM P741 P742 P743 SC SCADA COMMUNICATIONS Hardware Suffix J and K Software Version 51 ...

Page 475: ...P74x EN SC Na7 SCADA Communications MiCOM P741 P742 P743 ...

Page 476: ... DNP3 0 communication not available 10 1 3 Second rear communication port SK4 10 1 4 Ethernet communication 11 1 4 1 Legacy protocols 11 1 4 2 IEC 61850 8 1 protocol 12 2 COURIER INTERFACE 14 2 1 Courier protocol 14 2 2 Supported command set 14 2 3 Relay courier database 15 2 4 Setting changes 15 2 4 1 Setting transfer mode 15 2 5 Event extraction 16 2 5 1 Automatic event extraction 16 2 5 2 Event...

Page 477: ...E communications 22 3 6 1 Scope 22 3 6 2 IEC 61850 GOOSE configuration 22 3 7 Ethernet functionality 22 3 7 1 Ethernet disconnection 23 3 7 2 Loss of power 23 FIGURES FIGURE 1 EIA RS 485 BUS CONNECTION ARRANGEMENTS 5 FIGURE 2 REMOTE COMMUNICATION CONNECTION ARRANGEMENTS 7 FIGURE 3 UP TO 8 ADDRESSES EXAMPLE 9 FIGURE 4 MORE THAN 8 ADDRESSES EXAMPLE 9 FIGURE 5 SECOND REAR PORT EIA RS 232 EXAMPLE 11 F...

Page 478: ... only mode Command Blocking A Read Only mode is available for the rear communication ports of the Px40 relays When Read Only mode is enabled for a port all setting changes and most commands control actions are blocked not accepted by the relay The full functionality is described below It is similar to the Command Blocking setting of Px30 relays Read Only mode can be enabled disabled for the follow...

Page 479: ... is for the earth shield of the cable When the K Bus option is selected for the rear port the two signal connections are not polarity conscious however for MODBUS IEC60870 5 103 and DNP3 0 care must be taken to observe the correct polarity The protocol provided by the relay is indicated in the relay menu in the Communications column Using the keypad and LCD firstly check that the Comms settings ce...

Page 480: ...ng It may also be necessary to bias the signal wires to prevent jabber Jabber occurs when the signal level has an indeterminate state because the bus is not being actively driven This can occur when all the slaves are in receive mode and the master is slow to turn from receive mode to transmit mode This may be because the master purposefully waits in receive mode or even in a high impedance state ...

Page 481: ...2 2 Courier communication Courier works on a master slave basis where the slave units contain information in the form of a database and respond with information from the database when it is requested by a master unit The relay is a slave unit that is designed to be used with a Courier master unit such as S1 S10 PAS T or a SCADA system To use the rear port to communicate with a PC based master stat...

Page 482: ...firstly check that the Comms settings cell in the Configuration column is set to Visible then move to the Communications column Only two settings apply to the rear port using Courier the relay s address and the inactivity timer Synchronous communication is used at a fixed baud rate of 64kbits s Move down the Communications column from the column heading to the first cell down which indicates the c...

Page 483: ...firmed with a write to the Save changes cell of the Configuration column Off line editors such as S1 do not require this action for the setting changes to take effect 1 2 3 MODBUS communication not available MODBUS is a master slave communication protocol which can be used for network control In a similar fashion to Courier the system works by the master device initiating all actions and the slave...

Page 484: ...232 P3796ENb FIGURE 3 UP TO 8 ADDRESSES EXAMPLE CU Informations Idiff Ibias Inputs Outputs Events Disturbance records MiCOM P741 Central Unit Peripheral Units MiCOM P743 MiCOM P742 K BUS Courier IEC60870 5 103 Optical fibre PU Informations for each PU I Inputs Outputs Events Disturbance records EIA RS 485 EIA RS 232 K BUS Courier P3796ENc Star Coupler If Fibre Optic Used IEC60870 5 103 Optical fib...

Page 485: ...ed at Courier for RP2 RP2 protocol Courier The next cell down indicates the status of the hardware e g RP2 card status EIA RS 232 OK The next cell allows for selection of the port configuration RP2 port config EIA RS 232 The port can be configured for EIA RS 232 EIA RS 485 or K Bus In the case of EIA RS 232 and EIA RS 485 the next cell selects the communication mode RP2 comms mode IEC60870 FT1 2 T...

Page 486: ...ted by the relay 9600 bits s 19200 bits s and 38400 bits s If the second rear port is not used this can also be provided with a KITZ201 Idiff A B C Ibias A B C Inputs Outputs Events Disturbance P741 Add 6 CU PU Local PC Port 2 RS 232 P743 Kbus courier Port 3 Port 1 Kbus courier Add 7 Kitz201 Add 2 P742 Add 8 IEC 103 Fibre Kbus courier Port 3 Port 1 or Vdew IEC Master Per PU connection I A B C Inpu...

Page 487: ...ll Settings PSL events P742 P742 One I4XS4UE can connect up to 29 adresses full P740 scheme P3798ENb FIGURE 6 ETHERNET CONNEXION EXAMPLE 1 4 2 IEC 61850 8 1 protocol P741 Idiff A B C Ibias A B C Inputs Outputs Events Disturbance Records P741 settings PSL with MiCOM S1 via tunnelling P741 FO FO FO FO FO IEC 61850 8 1 Fibre Copper IEC 61850 8 1 Ethernet Port P743 NO P742 NO P742 NO P742 NO P3929ENb ...

Page 488: ...lling P741 IEC 61850 8 1 Fibre Copper IEC 61850 8 1 Ethernet Port P743 Ethernet Switch P743 Per P743 connection I A B C Inputs Outputs Events Disturbance Records P743 settings PSL with MiCOM S1 via tunnelling P743 No IEC 61850 8 1 in P742 If Ethernet communication is needed use I4X as in phase 2 P743 P742 NO P3930ENb FO FO FO FO FO FIGURE 8 ETHERNET CONNEXION TO THE P741 AND P743 ...

Page 489: ...ough K Bus is based on EIA RS 485 voltage levels it is a synchronous HDLC protocol using FM0 encoding It is not possible to use a standard EIA RS 232 to EIA RS 485 converter to convert IEC60870 5 FT1 2 frames to K Bus Nor is it possible to connect K Bus to an EIA RS 485 computer port A protocol converter such as the KITZ101 should be employed for this purpose Alternatively for direct connections t...

Page 490: ... Binary flag cells 2 4 Setting changes See R6512 Courier User Guide Chapter 9 There are three categories of settings within the relay database Control and support Disturbance recorder Protection settings group Setting changes made to the control and support settings are implemented immediately and stored in non volatile memory Changes made to either the disturbance recorder settings or the protect...

Page 491: ...t has been successfully extracted If all events have been extracted then the event bit will reset if there are more events still to be extracted the next event can be accessed using the send event command as before 2 5 2 Event types Events will be created by the relay under the following circumstances Change of state of output contact Change of state of opto input Protection element operation Alar...

Page 492: ...rd to be extracted Record 0 will be the oldest unextracted record already extracted older records will be assigned positive values and negative values will be used for more recent records To facilitate automatic extraction via the rear port the disturbance bit of the status byte is set by the relay whenever there are unextracted disturbance records Once a record has been selected using the above c...

Page 493: ...et in the substation offers many advantages most significantly including High speed data rates currently 100 Mbits s rather than 10 s of kbits s or less used by most serial protocols Multiple masters called clients Ethernet is an open standard in every day use GE has been involved in the Working Groups which formed the standard building on experience gained with UCA2 0 the predecessor of IEC 61850...

Page 494: ... Identifies the major functional areas within the IEC 61850 data model Either 3 or 6 characters are used as a prefix to define the functional group wrapper while the actual functionality is identified by a 4 character Logical Node name suffixed by an instance number For example XCBR1 circuit breaker MMXU1 measurements FrqPTOF2 overfrequency protection stage 2 Data Object This next layer is used to...

Page 495: ...cord is extracted as an ASCII format COMTRADE file Setting changes e g of protection settings are not supported in the current IEC 61850 implementation In order to keep this process as simple as possible such setting changes are done using S1 Settings Records program This can be done as previously using the front port serial connection of the relay or now optionally over the Ethernet link if prefe...

Page 496: ...P Address Subnet Mask Gateway and SNTP time synchronization parameters SNTP Server 1 SNTP Server 2 is performed by the IED Configurator tool so if these parameters are not available via an SCL file they must be configured manually If the assigned IP address is duplicated elsewhere on the same network the remote communications will operate in an indeterminate way However the relay will check for a ...

Page 497: ...alculated Time must be allocated to the testing of GSE schemes before or during commissioning in just the same way a hardwired scheme must be tested 3 6 1 Scope A maximum of 32 virtual inputs are available within the PSL which can be mapped directly to a published dataset in a GOOSE message only 1 fixed dataset is supported All published GOOSE signals are BOOLEAN values Each GOOSE signal contained...

Page 498: ...on is implemented in the relay to monitor each association and terminate any which are no longer active 3 7 2 Loss of power The relay allows the re establishment of associations by the client without a negative impact on the relay s operation after having its power removed As the relay acts as a server in this process the client must request the association Uncommitted settings are cancelled when ...

Page 499: ...P74x EN SC Na7 SCADA Communications SC 13 24 MiCOM P741 P742 P743 SC ...

Page 500: ...Symbols and Glossary P74x EN SG Na7 MiCOM P741 P742 P743 SG SYMBOLS AND GLOSSARY Hardware Suffix J and K Software Version 51 ...

Page 501: ...P74x EN SG Na7 Symbols and Glossary MiCOM P741 P742 P743 ...

Page 502: ...cts 87BB Differential Busbar protection 87BBN Phase differential Busbar 87BBP Neutral differential Busbar 89a An Isolator closed auxiliary contact The contact is in the same state as the breaker primary contacts 89b An Isolator open auxiliary contact The contact is in the opposite state to the breaker primary contacts ACSI Abstract Communication Service Interface In IEC 61850 the ACSI provides abs...

Page 503: ... which always responds with the same constant time delay on operation DZ Abbreviation of Dead Zone Area between a CT and an open breaker or an open isolator E F Earth fault Directly equivalent to ground fault FLC Full load current The nominal rated current for the circuit Flt Abbreviation of Fault Typically used to indicate faulted phase selection FN Function Fwd Indicates an element responding to...

Page 504: ...t stage of phase overcurrent protection Could be labelled 51 1 in ANSI terminology I 2 Second stage of phase overcurrent protection Could be labelled 51 2 in ANSI terminology I 3 Third stage of phase overcurrent protection Could be labelled 51 3 in ANSI terminology I 4 Fourth stage of phase overcurrent protection Could be labelled 51 4 in ANSI terminology I BB Minimum pick up phase threshold for t...

Page 505: ...ction Could be labelled 51N 1 in ANSI terminology IN 2 Second stage of ground overcurrent protection Could be labelled 51N 2 in ANSI terminology IN BB Minimum pick up neutral threshold for the local trip order confirmation IN DZ Minimum pick up neutral threshold for the Dead Zone protection Inh An inhibit signal Inst An element with instantaneous operation i e having no deliberate time delay ISEF ...

Page 506: ...rcle on the input or output of a logic gate Indicates a NOT invert function O P Abbreviation of output Opto An optocoupled logic input Alternative terminology binary input P1 Used in IEC terminology to identify the primary CT terminal polarity Replace by a dot when using ANSI standards P2 Used in IEC terminology to identify the primary CT terminal polarity The non dot terminal PCB Printed circuit ...

Page 507: ...te a communication receive line pin S1 Used in IEC terminology to identify the secondary CT terminal polarity Replace by a dot when using ANSI standards S2 Used in IEC terminology to identify the secondary CT terminal polarity The non dot terminal SCL Substation Configuration Language In IEC 61850 the definition of the configuration files SCSM Specific Communication Service Mappings In IEC 61850 t...

Page 508: ...t be phase L2 yellow phase or other in customer terminology VC Phase C voltage Might be phase L3 blue phase or other in customer terminology VCO Voltage controlled overcurrent element Vk IEC knee point voltage of a current transformer Vn The rated nominal voltage of the relay To match the line VT input VN Neutral voltage displacement or residual voltage VN 1 First stage of residual neutral overvol...

Page 509: ... SG 14 8 MiCOM P741 P742 P743 SG Logic Timers Logic Symbols Explanation Time Chart Delay on pick up timer t Delay on drop off timer t Delay on pick up drop off timer Pulse timer Pulse pick up falling edge Pulse pick up raising edge Latch ...

Page 510: ...Symbols and Glossary P74x EN SG Na7 MiCOM P741 P742 P743 SG 14 9 SG Logic Symbols Explanation Time Chart Dwell timer Straight non latching Hold value until input reset signal ...

Page 511: ...P74x EN SG Na7 Symbols and Glossary SG 14 10 MiCOM P741 P742 P743 SG Logic Gates ...

Page 512: ...Installation P74x EN IN Na7 MiCOM P741 P742 P743 IN INSTALLATION Hardware Suffix J and K Software Version 51 ...

Page 513: ...P74x EN IN Na7 Installation MiCOM P741 P742 P743 ...

Page 514: ...unting 8 5 2 Panel mounting 9 6 RELAY WIRING 10 6 1 Medium and heavy duty terminal block connections 10 6 2 RS485 port 10 6 3 IRIG B connections P741 only 11 6 4 RS232 port 11 6 5 Optical fiber connectors when applicable 11 6 6 Download monitor port 11 6 7 Earth connection 11 7 P741 CENTRAL UNIT 12 8 P742 PERIPHERAL UNIT 14 9 P743 PERIPHERAL UNIT 16 10 EXTERNAL CONNECTION DIAGRAMS 18 ...

Page 515: ...P74x EN IN Na7 Installation IN 15 2 MiCOM P741 P742 P743 IN ...

Page 516: ...ed immediately to ensure no external damage has been sustained in transit If damage has been sustained a claim should be made to the transport contractor and General Electric should be promptly notified Relays that are supplied unmounted and not intended for immediate installation should be returned to their protective polythene bags and delivery carton Section 3 of this chapter gives more informa...

Page 517: ...l frame or edges of the circuit boards Printed circuit boards should only be handled by their edges Avoid touching the electronic components printed circuit tracks or connectors 3 Do not pass the module to another person without first ensuring you are both at the same electrostatic potential Shaking hands achieves equipotential 4 Place the module on an anti static surface or on a conducting surfac...

Page 518: ...r about an hour prior to replacing it in the carton To prevent battery drain during transportation and storage a battery isolation strip is fitted during manufacture With the lower access cover open presence of the battery isolation strip can be checked by a red tab protruding from the positive side Care should be taken on subsequent unpacking that any dust which has collected on the carton does n...

Page 519: ... isolation strip will be seen protruding from the positive side of the battery compartment Do not remove this strip because it prevents battery drain during transportation and storage and will be removed as part of the commissioning tests Relays must only be handled by skilled persons The site should be well lit to facilitate inspection clean dry and reasonably free from dust and excessive vibrati...

Page 520: ... that when viewed from the front it is positioned on the right hand side of the relay or relays with which it is associated This minimises the wiring between the relay and test block and allows the correct test block to be easily identified during commissioning and maintenance tests FIGURE 1 LOCATION OF BATTERY ISOLATION STRIP If it is necessary to test correct relay operation during the installat...

Page 521: ... including those supplied for mounting MIDOS relays have marginally larger heads which can damage the front cover moulding if used Once the tier is complete the frames are fastened into the racks using mounting angles at each end of the tier P0147ENc FIGURE 2 RACK MOUNTING OF RELAYS Relays can be mechanically grouped into single tier 4U or multi tier arrangements by means of the rack frame This en...

Page 522: ...or vertically to form rigid assemblies prior to mounting in the panel Note It is not advised that relays are fastened using pop rivets as this will not allow the relay to be easily removed from the panel in the future if repair is necessary If it is required to mount a relay assembly on a panel complying to BS EN60529 IP52 it will be necessary to fit a metallic sealing strip between adjoining rela...

Page 523: ...rs 2 5mm2 Auxiliary Supply Vx 1 5mm2 RS485 Port See separate section Other circuits 1 0mm2 Due to the limitations of the ring terminal the maximum wire size that can be used for any of the medium or heavy duty terminals is 6 0mm2 using ring terminals that are not pre insulated Where it required to only use pre insulated ring terminals the maximum wire size that can be used is reduced to 2 63mm2 pe...

Page 524: ...relay uses 1300nm multi mode 100BaseFx and BFOC 2 5 ST connectors one Tx optical emitter one Rx optical receiver 6 6 Download monitor port Short term connections to the download monitor port located behind the bottom access cover can be made using a screened 25 core communication cable up to 4m long The cable should be terminated at the relay end with a 25 way metal shelled D type male plug 6 7 Ea...

Page 525: ... G ACCESS SHOWING COVER CLOSED COVER TERMINAL BLOCK DET AI L EACH TERMINA TION ACCEPTS ST CONNECT O R MUL TI MODE FIBRE EACH TERMINA TION ACCEPTS 2 x M 4 R IN G TERMINALS TX TX RX RX SK6 SK6 LI NK LI N ACTIVITY ACTIVITY 00 02 84 9F F F 9 0 00 02 84 9F R R 2014809 8 2014809 xWorks xW IRIG B12x IRIG B12x WindRive r WindRive R R RX RX CH1 CH1 RX RX CH2 CH2 TX TX TX TX 12 OFF HOLES Dia 3 4 142 45 FLUS...

Page 526: ...MODULE P3712ENc LOGICAL OUTPUT CONT ACT BOARD LOGICAL INPUT CONT ACT BOARD A G B C D E F H J K TX RX SK6 LIN K ACTIVITY 00 02 84 9F FF 90 R 2014809 8 xW orks IRIG B12x WindRive r R RX CH1 RX CH2 TX L TX M N 15 13 17 16 18 12 14 5 7 9 11 8 10 6 4 1 3 2 15 13 17 16 18 12 14 5 7 9 11 8 10 6 4 1 3 2 15 13 17 16 18 12 14 5 7 9 11 8 10 6 4 1 3 2 ...

Page 527: ...P74x EN IN Na7 Installation IN 15 14 MiCOM P741 P742 P743 IN FIGURE 4 P741 80TE REAR VIEW 8 P742 PERIPHERAL UNIT FIGURE 5 P742 40TE HARDWARE DESCRIPTION ...

Page 528: ...Installation P74x EN IN Na7 MiCOM P741 P742 P743 IN 15 15 IN FIGURE 6 P742 40TE REAR VIEW ...

Page 529: ...NG SCREW TERMINALSCREWS M4 x 6 STEEL COMBINA TION PAN HEAD MACHINE SCREW TYPE OF FIBRE OPTIC CONNECT OR ST SECONDAR Y COVER WHEN FITTED 240 0 INCL WIRING 157 5 MAX SIDE VIEW 30 0 309 6 303 5 168 0 4 5 10 3 159 0 23 25 116 55 142 45 12 OFF HOLES 3 4 f FLUSH MOUNTING PANEL CUT OUT DETAIL 155 4 303 5 129 5 FRONT VIEW TX TX ACTIVITY ACTIVIT LINK LIN RX RX SK6 SK6 00 02 84 9F FF 90 00 02 84 9F 20148098...

Page 530: ...exion to CU via optic fibre 18 17 15 13 11 16 14 12 9 7 5 10 8 3 1 6 4 2 18 17 15 13 11 16 14 12 9 7 5 10 8 3 1 6 4 2 18 17 15 13 11 16 14 12 9 7 5 10 8 3 1 6 4 2 18 17 15 13 11 16 14 12 9 7 5 10 8 3 1 6 4 2 18 17 15 13 11 16 14 12 9 7 5 10 8 3 1 6 4 2 18 17 15 13 11 16 14 12 9 7 5 10 8 3 1 6 4 2 CH1 TX RX TX CH2 RX H TX ACTIVIT Y LIN K RX SK6 00 02 84 9F FF 90 20148098 VxW orks R WindRiver R OPTI...

Page 531: ...P74x EN IN Na7 Installation IN 15 18 MiCOM P741 P742 P743 IN 10 EXTERNAL CONNECTION DIAGRAMS Please refer to Appendix A to see the full list of wiring and communication diagrams ...

Page 532: ...Firmware and Service Manual P74x EN VH Na7 Version History MiCOM P741 P742 P743 VH FIRMWARE AND SERVICE MANUAL VERSION HISTORY Hardware Suffix J and K Software Version 51 ...

Page 533: ...P74x EN VH Na7 Firmware and Service Manual Version History MiCOM P741 P742 P743 ...

Page 534: ...eys and 18 tricolour LEDs P742 Evolution with new User Interface 32 Controls Inputs Control Input status stored in FLASH memory 10 Maintenance Records instead of 5 V2 12 Patch 31 P740 EN xx E33 31 C3 5 J or K Dec 2006 The Delta I criterion did not block the trip The 87BB protection trips even if only one variation of current is detected Isolators were considered closed when a status alarm occured ...

Page 535: ...EMENT 2 is MEASUREMENT 2 in Russian language V2 13 Patch 32 P740 EN xx F44 33 C3 8 J or K Apr 2007 First events following power up are tagged with the right date time When using default PSL there is a DR after a 50BF backtrip through an opto input of the CU The latched Function Key DDB signals are correct on relay power up Uncompressed Disturbance Record Pre trigger is calculated correctly When us...

Page 536: ...f the protection V2 14 Patch 33 P740 EN xx H65 40 D2 2 J or K July 2007 Addition of the Ethernet IEC61850 8 1 protocol option Addition of the Demodulated Irig B option V2 14 Patch 40 P740 EN xx H65 40 D2 3 J or K February 2008 The status of the trip relays 1 2 3 is stored in BBRAM even if the Trip Latched function is disabled in the column CB Control The status of the trip relays 1 2 3 latched in ...

Page 537: ...a rear port V2 14 Patch 42 P740 EN xx J86 51 E2 0 K Jan 2010 Hardware P742 P743 new options with 4 or 8 high break relays 8 or 16 outputs and 8 16 or 24 inputs P741 P743 Redundant Ethernet board in option Software No blocking mode of a zone in case of circuitry fault added The differential current can be set in order to display 0A when current is not significative External voltage criteria CU logi...

Page 538: ... CB supervision time delay is settable I0 supervision with neutral current measured can block 87BB protection CT supervision with max IA IB IC 10IN and 50 max IA IB IC min IA IB IC 87BB PU fault record starting phase and faulty zone is indicated 50BF fault and manual zone tripping only the zone is available in the PU fault record I 2 IN 2 have 87BB P 87BB N I N 2 87BBP I N 2 88BBN blocking options...

Page 539: ...P74x EN VH Na7 Firmware and Service Manual Version History VH 16 6 MiCOM P741 P742 P743 VH Relay Software Version 31 32 33 40 41 42 51 Setting File Software Version 31 32 33 40 41 42 51 ...

Page 540: ...Firmware and Service Manual P74x EN VH Na7 Version History MiCOM P741 P742 P743 VH 16 7 VH Relay Software Version 31 32 33 40 41 42 51 PSL File Software Version 31 32 33 40 41 42 51 P742 P743 ...

Page 541: ...P74x EN VH Na7 Firmware and Service Manual Version History VH 16 8 MiCOM P741 P742 P743 VH Relay Software Version 31 32 33 40 41 42 51 Menu Text File Software Version 31 32 33 40 41 42 51 ...

Page 542: ...APPENDIX A WIRING DIAGRAMS ...

Page 543: ...Appendix A Wiring Diagrams P74x P74x EN M Na7 ...

Page 544: ...PERIPHERAL UNIT 60TE 10P74302 1 E BUSBAR PROTECTION PERIPHERAL UNIT P743 60TE 10P74303 1 D BUSBAR PROTECTION PERIPHERAL UNIT P743 60TE 10P74304 1 D BUSBAR PROTECTION PERIPHERAL UNIT P743 60TE 10P74305 1 D BUSBAR PROTECTION PERIPHERAL UNIT P743 60TE WITH NCIT 10P74306 1 A 1 BUSBAR PROTECTION PERIPHERAL UNIT P743 60TE WITH NCIT 10P74307 1 C BUSBAR PROTECTION PERIPHERAL UNIT P743 60TE WITH NCIT 10P74...

Page 545: ...T SCALE CAD DATA 1 1 DIMENSIONS mm Title Substation Automation Solutions ALSTOM GRID UK LTD STAFFORD Sht Next Sht 30 11 2010 W LINTERN DRAWING OUTLINE UPDATED CID BLIN 8BHLDT 10Px4001 1 EXTERNAL CONNECTION DIAGRAM COMMS OPTIONS MICOM Px40 PLATFORM J ...

Page 546: ...E CAD DATA 1 1 DIMENSIONS mm Title Substation Automation Solutions ALSTOM GRID UK LTD STAFFORD Sht Next Sht 02 07 2013 N JOHNSON FIELD VOLTAGE OUTPUT REMOVED CID HONG 98JC6A 10P74101 1 EXTERNAL CONNECTION DIAGRAM BUSBAR PROTECTION CENTRAL UNIT P741 80TE G ...

Page 547: ...ATION A C B A7 A8 C2 OPTO 4 OPTO 1 OPTO 2 OPTO 3 A6 A4 A5 A1 A3 A2 AC OR DC x E1 E2 C1 EARTH CASE B4 B6 B7 B9 B10 B12 TRIP C RELAY 4 RELAY 5 OPTO 11 OPTO 10 OPTO 14 OPTO 13 OPTO 12 OPTO 16 OPTO 15 OPTO 9 CONNECTION COMMON OPTO 5 OPTO 8 OPTO 7 OPTO 6 C18 C17 C15 C14 C13 C16 C11 C10 C12 C3 C4 C6 C5 C8 C7 C9 COMMS NOTE 3 RELAY 6 Drg No Issue Revision Date Date Name Chkd DO NOT SCALE CAD DATA 1 1 DIME...

Page 548: ...B12 TX1 RX1 RX2 TX2 FIBRE OPTIC COMMUNICATION CURR DIFF COMMS NOTE 3 3 FOR COMMS OPTIONS SEE DRAWING 10Px4001 A15 A16 A3 A11 A12 A8 A4 A7 OPTO 1 OPTO 7 OPTO 8 OPTO 4 OPTO 5 OPTO 6 OPTO 2 OPTO 3 CONNECTION COMMON C17 C18 C16 C15 C14 C13 C10 C12 C11 C9 C4 C6 C7 C8 C5 C2 C3 C1 HIGH BREAK CONTACTS RELAY 1 RELAY 3 RELAY 2 RELAY 4 RELAY 11 RELAY 10 RELAY 9 RELAY 8 RELAY 7 RELAY 6 RELAY 5 Drg No Issue Re...

Page 549: ...A9 A10 A12 TRIP C RELAY 4 RELAY 5 NOT USED OPTO 9 OPTO 15 OPTO 16 OPTO 12 OPTO 13 OPTO 14 OPTO 10 OPTO 11 CONNECTION COMMON C17 C18 C16 C15 C14 C13 C10 C12 C11 C9 C4 C6 C7 C8 C5 C2 C3 C1 OPTO 3 OPTO 2 OPTO 1 OPTO 4 B8 B7 B6 B5 B4 B3 B2 B1 D15 D17 D16 D18 D13 D12 D14 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 B11 B15 OPTO 8 B16 OPTO 6 OPTO 7 B13 B14 B12 OPTO 5 B10 B9 B18 B17 CONNECTION COMMON NOT USED RELA...

Page 550: ...RIP C RELAY 4 RELAY 5 RELAY 6 TX1 RX1 RX2 TX2 FIBRE OPTIC COMMUNICATION CURR DIFF OPTO 9 OPTO 15 OPTO 16 OPTO 12 OPTO 13 OPTO 14 OPTO 10 OPTO 11 CONNECTION COMMON C17 C18 C16 C15 C14 C13 C10 C12 C11 C9 C4 C6 C7 C8 C5 C2 C3 C1 OPTO 3 OPTO 2 OPTO 1 OPTO 4 B8 B7 B6 B5 B4 B3 B2 B1 D15 D17 D16 D18 D13 D12 D14 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 B11 B15 OPTO 8 B16 OPTO 6 OPTO 7 B13 B14 B12 OPTO 5 B10 B9 ...

Page 551: ...15 C14 C13 C10 C12 C11 C9 C4 C6 C7 C8 C5 C2 C3 C1 OPTO 3 OPTO 2 OPTO 1 OPTO 4 B8 B7 B6 B5 B4 B3 B2 B1 B11 B15 OPTO 8 B16 OPTO 6 OPTO 7 B13 B14 B12 OPTO 5 B10 B9 B18 B17 CONNECTION COMMON E12 E17 E18 E13 E15 E14 E16 E1 E7 E8 E10 E11 E9 E2 E3 E5 E4 E6 3 FOR COMMS OPTIONS SEE DRAWING 10Px4001 COMMS NOTE 3 WATCHDOG CONTACT D15 D16 D3 D11 D12 D8 D4 D7 RELAY 1 RELAY 3 RELAY 2 RELAY 4 HIGH BREAK CONTACTS...

Page 552: ...TO 16 OPTO 12 OPTO 13 OPTO 14 OPTO 10 OPTO 11 CONNECTION COMMON C17 C18 C16 C15 C14 C13 C10 C12 C11 C9 C4 C6 C7 C8 C5 C2 C3 C1 OPTO 3 OPTO 2 OPTO 1 OPTO 4 B8 B7 B6 B5 B4 B3 B2 B1 D15 D17 D16 D18 D13 D12 D14 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 B11 B15 OPTO 8 B16 OPTO 6 OPTO 7 B13 B14 B12 OPTO 5 B10 B9 B18 B17 CONNECTION COMMON 3 FOR COMMS OPTIONS SEE DRAWING 10Px4001 COMMS NOTE 3 WATCHDOG CONTACT E1...

Page 553: ...CTION COMMON C17 C18 C16 C15 C14 C13 C10 C12 C11 C9 C4 C6 C7 C8 C5 C2 C3 C1 OPTO 3 OPTO 2 OPTO 1 OPTO 4 B8 B7 B6 B5 B4 B3 B2 B1 B11 B15 OPTO 8 B16 OPTO 6 OPTO 7 B13 B14 B12 OPTO 5 B10 B9 B18 B17 CONNECTION COMMON 3 FOR COMMS OPTIONS SEE DRAWING 10Px4001 COMMS NOTE 3 WATCHDOG CONTACT E15 E16 E3 E11 E12 E8 E4 E7 HIGH BREAK CONTACTS RELAY 5 RELAY 7 RELAY 6 RELAY 8 D15 D16 D3 D11 D12 D8 D4 D7 RELAY 1 ...

Page 554: ...NOT SCALE CAD DATA 1 1 DIMENSIONS mm Title Substation Automation Solutions ALSTOM GRID UK LTD STAFFORD Sht Next Sht 07 05 2012 B TABERNOR New Drawing 10P74306 1 EXTERNAL CONNECTION DIAGRAM BUSBAR PROTECTION PERIPHERAL UNIT P743 60TE WITH NCIT A 1 ...

Page 555: ... D5 D4 D3 D2 D1 E12 E17 E18 E13 E15 E14 E16 E1 E7 E8 E10 E11 E9 E2 E3 E5 E4 E6 COMMS NOTE 3 WATCHDOG CONTACT 7 8 2 4 5 6 3 1 RJ45 RX RX TX TX 100 BASE TX 100 BASE FX RX TX IEC 61850 9 2 LE IEC 61850 9 2 LE SK6 PIN TERMINAL P C B TYPE 1 NOTES 2 FOR COMMS OPTIONS SEE DRAWING 10Px4001 OPTO 3 OPTO 2 OPTO 1 OPTO 4 B8 B7 B6 B5 B4 B3 B2 B1 B11 B15 OPTO 8 B16 OPTO 6 OPTO 7 B13 B14 B12 OPTO 5 B10 B9 B18 B1...

Page 556: ...ELAY 5 RELAY 20 RELAY 19 RELAY 18 RELAY 17 RELAY 16 RELAY 15 RELAY 14 RELAY 13 7 8 2 4 5 6 3 1 RJ45 RX RX TX TX 100 BASE TX 100 BASE FX RX TX IEC 61850 9 2 LE IEC 61850 9 2 LE SK6 PIN TERMINAL P C B TYPE 1 NOTES 2 FOR COMMS OPTIONS SEE DRAWING 10Px4001 OPTO 3 OPTO 2 OPTO 1 OPTO 4 B8 B7 B6 B5 B4 B3 B2 B1 B11 B15 OPTO 8 B16 OPTO 6 OPTO 7 B13 B14 B12 OPTO 5 B10 B9 B18 B17 CONNECTION COMMON SAMPLE ANA...

Page 557: ... B13 B14 B12 OPTO 5 B10 B9 B18 B17 CONNECTION COMMON COMMS NOTE 3 WATCHDOG CONTACT E15 E16 E3 E11 E12 E8 E4 E7 HIGH BREAK CONTACTS RELAY 1 RELAY 3 RELAY 2 RELAY 4 RELAY 11 RELAY 10 RELAY 9 RELAY 8 RELAY 7 RELAY 6 RELAY 5 7 8 2 4 5 6 3 1 RJ45 RX RX TX TX 100 BASE TX 100 BASE FX RX TX IEC 61850 9 2 LE IEC 61850 9 2 LE SK6 PIN TERMINAL P C B TYPE 1 NOTES 2 FOR COMMS OPTIONS SEE DRAWING 10Px4001 SAMPL...

Page 558: ... BREAK CONTACTS RELAY 5 RELAY 7 RELAY 6 RELAY 8 D15 D16 D3 D11 D12 D8 D4 D7 RELAY 1 RELAY 3 RELAY 2 RELAY 4 HIGH BREAK CONTACTS RELAY 15 RELAY 14 RELAY 13 RELAY 12 RELAY 11 RELAY 10 RELAY 9 7 8 2 4 5 6 3 1 RJ45 RX RX TX TX 100 BASE TX 100 BASE FX RX TX IEC 61850 9 2 LE IEC 61850 9 2 LE SK6 PIN TERMINAL P C B TYPE 1 NOTES 2 FOR COMMS OPTIONS SEE DRAWING 10Px4001 SAMPLE ANALOGUE VALUE ONLY SAMPLE AN...

Page 559: ......

Page 560: ...his document is indicative only No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project This will depend on the technical and commercial circumstances It is provided without liability and is subject to change without notice Reproduction use or disclosure to third parties without express written authority is strictly prohi...

Search results

Summary of Contents for P741

Reviews:

Related manuals for P741

Brands by name

Popular brands

GE P741, Technical Manual

Search results

Summary of Contents for P741

Reviews:

Related manuals for P741

Brands by name

Popular brands