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Introduction

P72x/EN

IT/C21

MiCOM P721/P723

Page 3/10

1. INTRODUCTION

The differential protections of the MiCOM P72x range are Schneider Electric numerical high
impedance differential protection. MiCOM P721 and P723 have been designed to provide
differential protection and a high impedance differential protection

The differential protection consists to measure the summation of n Current Transformers
(CTs) secondary currents. Without internal fault, this sum is null. If an internal fault occurs,
the protection measures the leak current. If an external fault occurs (with non-saturated CT),
the Kirchhoff's law is conserved and no current is measured.

The high impedance differential protection main application is a CT saturation in a busbar
(when a serious and external fault occurs).

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Summary of Contents for P721

Page 1: ...MiCOM P721 P723 High Impedance Differential Protection P72x EN T C21 Software Version 11 D Technical Guide...

Page 2: ......

Page 3: ...and Case Dimensions P72x EN IN C21 User Guide P72x EN FT C21 Menu Content Tables P72x EN HI C21 Technical Data P72x EN TD A11 Getting Started P72x EN GS C21 Application P72x EN AP C21 Communication Da...

Page 4: ...P72x EN T C21 Technical Guide Contents Page 2 2 MiCOM P721 P723 BLANK PAGE...

Page 5: ...Pxxx EN SS G11 SAFETY SECTION...

Page 6: ......

Page 7: ...1 INTRODUCTION 3 2 HEALTH AND SAFETY 3 3 SYMBOLS AND EXTERNAL LABELS ON THE EQUIPMENT 4 3 1 Symbols 4 3 2 Labels 4 4 INSTALLING COMMISSIONING AND SERVICING 4 5 DECOMMISSIONING AND DISPOSAL 7 6 TECHNI...

Page 8: ...Pxxx EN SS G11 Page 2 8 Safety Section BLANK PAGE...

Page 9: ...miliar with the contents of that Safety Section or this Safety Guide When electrical equipment is in operation dangerous voltages will be present in certain parts of the equipment Failure to observe w...

Page 10: ...t documentation should be consulted before installing commissioning or servicing the equipment Terminals exposed during installation commissioning and maintenance may present a hazardous voltage unles...

Page 11: ...he protective conductor earth connection must be low inductance and as short as possible All connections to the equipment must have a defined potential Connections that are pre wired but not used shou...

Page 12: ...former termination has automatic CT shorting on removal of the module Therefore external shorting of the CTs may not be required the equipment documentation should be checked to see if this applies Fo...

Page 13: ...he equipment may be cleaned using a lint free cloth dampened with clean water when no connections are energized Contact fingers of test plugs are normally protected by petroleum jelly which should not...

Page 14: ...documentation This equipment requires a protective conductor earth connection to ensure user safety 6 3 Installation Category IEC 60255 27 2005 EN 60255 27 2006 Installation Category III Overvoltage C...

Page 15: ...Introduction P72x EN IT C21 MiCOM P721 P723 INTRODUCTION...

Page 16: ......

Page 17: ...23 Page 1 10 CONTENTS 1 INTRODUCTION 3 2 HOW TO USE THIS MANUAL 4 3 INTRODUCTION TO THE MiCOM RANGE 5 4 INTRODUCTION TO THE MiCOM P721 P723 PROTECTIONS 6 5 MAIN FUNCTIONS 7 5 1 Main functions 7 5 2 Ge...

Page 18: ...P72x EN IT C21 Introduction Page 2 10 MiCOM P721 P723 BLANK PAGE...

Page 19: ...e differential protection The differential protection consists to measure the summation of n Current Transformers CTs secondary currents Without internal fault this sum is null If an internal fault oc...

Page 20: ...power system applications of the relay calculation of suitable settings some typical worked examples and how to apply the settings to the relay P72x EN TD Technical data and curve characteristics Thi...

Page 21: ...COM 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...

Page 22: ...3 phases fault protection In addition to its protective functions each relay offers control and recording features They can be fully integrated to a control system so protection control data acquisiti...

Page 23: ...The following table shows the general features available GENERAL FEATURES P721 P723 Number of digital inputs 2 5 Total number of outputs relays 4 8 Events recording 250 250 Fault recording 25 25 Dist...

Page 24: ...P72x EN IT C21 Introduction Page 8 10 MiCOM P721 P723 Application overview FIGURE 1 FUNCTIONAL DIAGRAM...

Page 25: ...48 240 Vac 48 250 Vdc 48 240 Vac 48 250 Vdc 48 240 Vac 24 250Vdc 48 240Vac 105 145 Vdc 1 48 250 Vdc ENA UK 110 Vdc 30 20 1 220 Vdc 30 20 1 24 250 Vdc 24 240 Vdc H T V W Z Rear port communication inter...

Page 26: ...P72x EN IT C21 Introduction Page 10 10 MiCOM P721 P723 BLANK PAGE...

Page 27: ...Handling Installation and Case Dimensions P72x EN IN C21 MiCOM P721 P723 HANDLING INSTALLATION AND CASE DIMENSIONS...

Page 28: ......

Page 29: ...AL CONSIDERATIONS 3 1 1 Receipt of relays 3 1 2 Electrostatic discharge ESD 3 2 HANDLING OF ELECTRONIC EQUIPMENT 4 3 RELAY MOUNTING 5 4 UNPACKING 6 5 STORAGE 7 6 DIMENSIONS 8 6 1 Connection of power t...

Page 30: ...P72x EN IN C21 Handling Installation and Case Dimensions Page 2 10 MiCOM P721 P723 BLANK PAGE...

Page 31: ...mmediately should be returned with their protective polythene bags 1 2 Electrostatic discharge ESD The relays use components that are sensitive to electrostatic discharges The electronic circuits are...

Page 32: ...its frontplate frame or edges of the printed circuit board Avoid touching the electronic components printed circuit track or connectors 3 Do not pass the module to another person without first ensurin...

Page 33: ...rack assembly If an MMLG test block is to be included it should be positioned at the right hand side of the assembly viewed from the front Modules should remain protected by their metal case during as...

Page 34: ...lays must only be handled by skilled personnel The installation should be clean dry and reasonably free from dust and excessive vibration The site should be well lit to facilitate inspection Relays th...

Page 35: ...he packing they should be retained The action of the de humidifier crystals will be impaired if the bag has been exposed to ambient conditions and may be restored by gently heating the bag for about a...

Page 36: ...dividual equipment are delivered with sufficient M4 screws to connect the relay via annular terminals with a maximum recommended of two annular terminals per contact If necessary Schneider Electric ca...

Page 37: ...ransformers circuits The other circuits must be protected by fuses 6 2 Communication port RS485 Connections to RS485 is made using annular terminals It is recommended that a two core screened cable is...

Page 38: ...to 2 1 Kg External size Height case 152 mm front panel 177 mm Width case 97 mm front panel 103 mm Depth case 226 mm front panel case 252 mm P0078ENb MiCOM P721 AND P723 RELAYS CASE DIMENSIONS NOTE The...

Page 39: ...User Guide P72x EN FT C21 MiCOM P721 P723 USER GUIDE...

Page 40: ......

Page 41: ...ssages 10 1 4 1 Electrical Network Alarms 10 2 MENUS 13 2 1 Default display 13 2 2 Menu contents description 13 2 3 OP PARAMETERS Menu 14 2 4 CONFIGURATION menu 15 2 4 1 Submenu CONFIGURATION 15 2 4 2...

Page 42: ...31 2 8 8 Submenu Logic Equations 31 2 9 RECORDS Menu 34 2 9 1 Fault Record submenu 34 2 9 2 INSTANTANEOUS RECORDS submenu 35 2 9 3 DISTURBANCE RECORD submenu 35 3 WIRING 36 3 1 Auxiliary supply 36 3 2...

Page 43: ...h one of these relays it is possible to combine 1 and 5 Amp current inputs together i e a mix between 1A for earth fault and 5A for phase connections MiCOM P721 and P723 relays continuously measure ph...

Page 44: ...vers at the top and bottom of the relay are shown closed Extra physical protection for the front panel can be provided by an optional transparent front cover this allows read only access to the relays...

Page 45: ...s of the relay Front comms port Fixed function LED User programmable function LEDs Cover not used Top cover Keypad P3602ENg Front comms port Fixed function LED User programmable function LEDs Cover no...

Page 46: ...n keys and c Keys and c are used to read and acknowledge alarms To display successive alarms press key c Alarms are displayed in reverse order of their detection the most recent alarm first the oldest...

Page 47: ...remote command a digital input or by a new fault CONFIGURATION Alarms menu LED 2 Colour ORANGE Label ALARM LED 2 indicates that the relay has detected an alarm This alarm can either be a threshold cro...

Page 48: ...a new version of the application software version into the relay flash memory or to download retrieve settings plugging a laptop loaded with MiCOM S1 setting software To withdraw more easily the acti...

Page 49: ...us thresholds time delays communication parameters allocation of inputs and outputs relays The password consists of four capital characters When leaving factory the password is set to AAAA The user ca...

Page 50: ...Alarm messages generated by the electrical power network Warning messages caused by hardware or software faults from the relay 1 4 1 Electrical Network Alarms Any crossing of a threshold instantaneous...

Page 51: ...TRL CIRCUIT BREAKER Fail menu Logical output relays latched At least one output relay is latched Maintenance Mode The relay is in maintenance mode Relay Hardware or Software Warning Messages Any softw...

Page 52: ...lay is powered ON it will check its memory contents to determine whether the settings are set to the factory defaults If the relay detects that the default settings are loaded an alarm is raised The A...

Page 53: ...nus from the default display press To return to the default display from these menus or sub menus press DEFAULT DISPLAY OP PARAMETERS CONFIGURATION MEASUREMENTS COMMUNICATION PROTECTION G1 PROTECTION...

Page 54: ...ortuguese languages Description Pxxx Indicates the type of relay Reference MiCOM Displays the reference that lists the equipment associated with the relay Software version XX Displays the version of t...

Page 55: ...nfiguration of the protection phase or earth supervision Protection choices Earth or Phase Input selection Current The input selection menu is used to select Voltage unit instead of Current Possible c...

Page 56: ...Line CT Primary 1000 A Choose the rated primary current of the CT Setting range from 1 to 9999 step 1 0000 Line CT sec 1 A Choose the rated secondary current of the CT Setting value 1 or 5 2 4 2 Subm...

Page 57: ...Aux3 Logic Input delayed by Aux3 time tAux 4 X Copy of Aux4 Logic Input delayed by Aux4 time tEqu A X X Time delayed logical output of Equation A tEqu B X X Time delayed logical output of Equation B t...

Page 58: ...cted the following menu is displayed Setting Group 1 Select active setting protection group 1 or 2 2 4 4 Submenu ALARMS CONFIGURATION Alarms Heading of the Alarms submenu Setting choices Yes or No Ins...

Page 59: ...1 1 0 P721 2 inputs and P723 5 inputs This menu is used to assign active high or low functionality to each logic input 0 active low 1 active high Voltage input DC Setting choice AC or DC power supply...

Page 60: ...lling memorised values of the current Press to clear these values password required Indiff Maximum 0 00A Displays the maximum earth differential current value True RMS value 2 5 2 If Phase protection...

Page 61: ...ion It is important that both relay and master station are set at the same speed setting Select from 300 600 1200 2400 4800 9600 19200 or 38400 bd Parity None Choose the parity in the IEC data frame S...

Page 62: ...roup To access the PROTECTION menu from the default display press then until the menu is reached The different submenus are Earth Protection Phase protection P723 only PROTECTION G1 G2 PROTECTION G1 G...

Page 63: ...l buswire supervision is enabled The following menus are displayed No the 95N Earth high impedance differential protection is not enabled and no menu is displayed 95N Threshold I Sup 1 In This menu is...

Page 64: ...No Setting choice Yes or No Yes the check zone trip permission logic input is enabled No the check zone is disabled 87 Rst Timer tReset 0s The Reset timer menu sets the reset time from 0 to 600s step...

Page 65: ...ic 1 2 Output relays Latch output Relays Inputs Circuit Breaker Fail Logic Equations To access the AUTOMAT CTRL Menu press then until the menu is reached 2 8 1 Submenu Trip Commands This submenu makes...

Page 66: ...ched after the cause for activating these functions has disappeared Function P721 P723 INFORMATION and COMMENTS Latch 87N tDiff X X Time delayed earth differential protection threshold Latch 87 tDiff...

Page 67: ...nction P721 P723 INFORMATION and COMMENTS Block 87N tDiff X X Time delayed earth differential protection threshold Block 87 tDiff X Time delayed phase differential protection threshold Block tAux 1 X...

Page 68: ...ase A or L1 or R high impedance differential threshold buswire supervision 95B tSup B X As above for phase B or L2 or S 95C tSup C X As above for phase C or L3 or T CB Fail X X Circuit Breaker does no...

Page 69: ...reset by a logic input assigned to this function Further the active latched output relays can be reset from the front panel by pushing This action is available if the window status Output Relays in OP...

Page 70: ...X X Assign a Time synchronisation input 87CZ Chk Zone X Check Zone AUTOMAT CTRL Inputs P721 2 inputs P723 5 inputs Input 1 Input 2 Input 5 Aux1 Time Aux4 Time 2 8 6 1 Function assignement to a logic...

Page 71: ...quations submenu it is possible to form complex Boolean functions using NOT AND and OR operators indicated from highest to lowest priority Up to 16 operands can be used in any single equation The foll...

Page 72: ...us of the Logic Input tAux 5 Input 1 X X Instantaneous digital input 1 Input 2 X X Instantaneous digital input 2 Input 3 X Instantaneous digital input 3 Input 4 X Instantaneous digital input 4 Input 5...

Page 73: ...01 to A 15 OR OR NOT AND or AND NOT Note AND operator has priority to OR operator refer to the following note Equation A 00 Null Logic signal right lower part Is used to select the logic signal corre...

Page 74: ...was recorded The format of the time is hh mm ss In this example the fault was recorded at 12 05 23 pm and 420ms fault Date 12 11 99 Displays the date when the fault was recorded The format of the Date...

Page 75: ...he threshold has been exceeded Trip No Displays if a trip followed the crossing of the threshold or not 2 9 3 DISTURBANCE RECORD submenu The Disturb Record submenu makes it possible to set and read up...

Page 76: ...1 P723 Logic outputs 2 5 On the same MiCOM P72x relay the user can mix different voltage levels as logic inputs are fully independent e g Uaux 48 250 Vdc Input 1 48 Vdc Input 2 5 110 Vdc If the user s...

Page 77: ...MiCOM P72x relays provide a RS 232 communication port This port is dedicated to Setting software MiCOM S1 The cable between the relay and the PC is a standard RS 232 shielded cable The relay requires...

Page 78: ...P72x EN FT C21 User Guide Page 38 38 MiCOM P721 P723 BLANK PAGE...

Page 79: ...Menu Content Tables P72x EN HI C21 MiCOM P721 P723 MENU CONTENT TABLES...

Page 80: ...P72x EN HI C21 Menu Content Tables MiCOM P721 P723 BLANK PAGE...

Page 81: ...Menu Content Tables P72x EN HI C21 MiCOM P721 P723 Page 1 8 CONTENTS 1 MiCOM P721 V11 D SOFTWARE 3 2 MiCOM P723 V11 D SOFTWARE 6...

Page 82: ...P72x EN HI C21 Menu Content Tables Page 2 8 MiCOM P721 P723 BLANK PAGE...

Page 83: ...ition on alarms Relays 8765W4321 Indiff Maximum Parity MiCOM 95N tSup Yes No CMD 000000000 0 00A None Buswire Short Software version E Gnd Text Input 1 Alarm tAux1 inhib Data Bits 11 C N Input 2 Alarm...

Page 84: ...Threshold I Sup Trip Yes No tAux2 tAux1 87N tDiff 1 In 1 In 87N tDiff Control Trip tAux2 95N Sup tAux1 tEqu A 95N tSup 87N Threshold V Diff 95N Threshold V Sup tAux2 tEqu B CB Fail 200 0 V 200 0 V Con...

Page 85: ...our Post Time Aux1 0 s 0 1 In Boolean Logic 00 00 00 00 00 00 00 00 2 0 s Aux2 Start Disturb Aux 2 Time tAux2 CB Fail Time tBF Fault Date Date Disturb Rec Trig Start Block Logic 1 0 s 0 1 s 00 00 00 0...

Page 86: ...ux3 inhib Frequency 95C tSup C Alarm tAux4 inhib Stop Bits 50 Hz Input 1 1 Input 2 Active Group Stabiliz Resist N Input 3 INdiff Spont Events 1 1 30 Input 4 0 00A Enabl All Input 5 Input 54321 E Gnd C...

Page 87: ...0 s tEqu F tAux1 95A tSup B tEqu G tAux2 95A tSup C 87N Measure Filter 95N Measure Filter tEqu H tAux3 CB Fail Sample Sample tAux4 tAux1 Active Group tAux2 No 87N Rst Timer tReset 95N Rst Timer tReset...

Page 88: ...x4 If Yes 2 00 00 00 00 00 00 On Inst Start Disturb V diff Start Block Logic 1 5 0 V Equation A 15 Active Set Group Origin Start Block Logic 2 operand 2 87 tDiff Change setting CB Fail Time tBF Reset...

Page 89: ...Technical Data P72x EN TD A11 MiCOM P721 P723 TECHNICAL DATA...

Page 90: ......

Page 91: ...TESTS 6 4 ENVIRONMENT 7 5 EU DIRECTIVE 8 5 1 EMC compliance 8 5 2 Product safety 8 6 DEVIATION OF PROTECTION ELEMENTS 9 7 DEVIATION OF AUTOMATION FUNCTIONS TIMERS 9 8 DEVIATION OF MEASUREMENTS 9 9 PR...

Page 92: ...s 12 10 6 Inputs 12 10 6 1 Inputs assignation 12 10 6 2 Auxiliary timers 12 10 7 Circuit Breaker Failure 13 10 7 1 CB Fail Setting Ranges 13 10 8 Logic Equations 13 10 8 1 Timer Setting Ranges 13 10 8...

Page 93: ...frequency 5Hz Nominal frequency 50 60Hz 1 3 Current Inputs Phase current inputs 1 and 5A by connection Earth current inputs 1 and 5A by connection Operating range Selected at order Cortec Burden Phas...

Page 94: ...in a 50Hz system 12ms in a 60Hz system 1 5 1 Supply Relay auxiliary power supply Logic Inputs Ordering Code Nominal voltage range Vx Operating voltage range Nominal Voltage range Minimal polarisation...

Page 95: ...5A cos 0 6 Breaking capacity DC 135 Vdc 0 3A L R 30 ms 250 Vdc 50W resistive or 25W inductive L R 40ms Operation time 7ms Durability Loaded contact 10000 operation minimum Unloaded contact 100000 ope...

Page 96: ...age 0 5 30MHz 73dB V quasi peak 60dB V average Radiated Emissions EN 55022 1998 30 230MHz 40dB V m at 10m measurement distance 230 1GHz 47dB V m at 10m measurement distance Conducted Immunity EN 61000...

Page 97: ...60 529 2001 Dust IP50 whole case Front IP 52 Back IP 10 Sinusoidal Vibrations IEC 60255 21 1 1998 Response and endurance class 2 Shocks IEC 60255 21 2 1998 Response and withstand class 2 Shock withst...

Page 98: ...mmission EMC Directive Generic standards were used to establish conformity EN50081 2 1994 EN60952 2 1995 5 2 Product safety 2006 95 EC replacing 73 23 EEC from 01 2007 Compliance with European Commiss...

Page 99: ...02 to 2In 1 to 400V 2 0s 2s 0 to 600s Earth bus wire supervision 0 01 to 1 In 0 5 to 200V 2 0 5s 3s 0 to 600s Phase bus wire supervision I Sup V Sup 0 01 to 1In 1 to 400V 2 0 5s 3s 0 to 600s 7 DEVIAT...

Page 100: ...Setting Ranges Setting Range 95N Earth bus wire supervision Min Max Step 95N Earth bus wire supervision Yes No 95N Threshold I Sup 0 01In 1In 0 01In 95N Threshold V Sup 0 5V 200V 0 1V 95N Filter timer...

Page 101: ...tion Setting Ranges Setting Range 95 Phase bus wire supervision Min Max Step 95 Phase bus wire supervision Yes No 95 Threshold I Sup 0 02In 2In 0 01In 95 Threshold V Sup 1V 400V 0 1V 95 Filter timer t...

Page 102: ...o a logic output 3 relays P721 and 7 relays P723 Assignable functions all models 87N Diff 87N tDiff 95N Sup 95N tSup Buswire Short CB Fail t Aux 1 t Aux 2 Active group Control trip Input1 Input2 tEqu...

Page 103: ...atching and or HMI LEDs Up to 16 operands can be used from 00 to 15 Within operands there are two parts 1 2 logical gates NOT OR AND NOT AND NOT OR 2 2 signals 87N Diff 95N tSup tAux input etc 10 8 1...

Page 104: ...7N tDiff Time delayed earth differential protection threshold 95N tSup Time delayed earth high impedance differential threshold buswire supervision tAux 1 Copy of the status of the Logic Input tAux 1...

Page 105: ...wire supervision 95B tSupB As above for phase B or L2 or S 95C tSupC As above for phase C or L3 or T Buswire Short Buswires short circuited tAux 3 Copy of the status of the Logic Input tAux 3 tAux 4 C...

Page 106: ...tantaneous recorder Capacity 5 starting informations instantaneous Time tag 1 millisecond Triggers Any selected protection alarm and threshold Data date hour origin any protection alarm length duratio...

Page 107: ...position Physical Link Connectors Data Rate Protocol RS485 Rear port Screened twister pair Screws or snap on 300 to 38400 baud programmable ModBus RTU Courier IEC60870 5 103 DNP3 0 RS232 Front port Sc...

Page 108: ...P72x EN TD A11 Technical Data Page 18 18 MiCOM P721 P723 BLANK PAGE...

Page 109: ...Getting Started P72x EN GS C21 MiCOM P721 P723 GETTING STARTED...

Page 110: ......

Page 111: ...ION TO A PC 7 3 1 Configuration 7 3 1 1 REMOTE connection 7 3 2 Products plugged in the same panel 8 3 3 Communication between distant products 8 3 4 MiCOM S1 and MiCOM S1 Studio relay communications...

Page 112: ...P72x EN GS C21 Getting Started Page 2 24 MiCOM P721 P723 BLANK PAGE...

Page 113: ...AC according to nominal supply rating Ua voltage power supply POSITIVE Vaux TO TERMINAL 33 NEGATIVE Vaux TO TERMINAL 34 DO NOT FORGET TO CONNECT THE EARTH REFERENCE TO TERMINAL 29 Turn on the auxiliar...

Page 114: ...suppress this message and to reset the watch dog change one parameter in the relay s menu Press the button Modify for instance the password or the language OP parameters menu 2 1 2 Password protection...

Page 115: ...he Date menu by pressing If necessary enter the current password and validate with Set the date using or arrow and validate with 10 11 08 means November 10th 2008 NOTE When you modify the date the fir...

Page 116: ...OM P721 P723 2 2 Menu structure The menu structure is shown below DEFAULT DISPLAY I Diff 1245 A OP PARAMETERS MEASUREMENTS COMMUNICATION PROTECTION G1 G2 AUTOMAT CTRL RECORDS CONFIGURATION Refer to P7...

Page 117: ...ic shield should be used The wiring of the RS232 cable must be as shown in the following drawing 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 RS232 PC PORT 9 pin male connector MiCOM P721 P723 9 pin female con...

Page 118: ...29 of each product 3 The pin number 29 of each terminal block must be connected to the case earth connection of each product with screw 3 3 Communication between distant products P0254ENa Earth EARTH...

Page 119: ...a proper connection is made between the PC and the relay before attempting to communicate with the relay This section is intended as a quick start guide to using MiCOM S1 Studio and assumes you have a...

Page 120: ...2 Select the Add option to add the new data model then click on the next button The next panel is used to select the model source CD ROM local folder or Areva T D FTP server Select the model source an...

Page 121: ...language and click the next button 1 2 1 1 2 2 The data models panel is displayed Select the data model for your product for instance to download P72x data models Open the Px10 Px20 Px20C M Modulex su...

Page 122: ...iCOM S1 Studio when a system is opened or created To open this default setting file refer to 3 5 8 3 5 2 Quick Connection to the relay using MiCOM S1 Studio To start MiCOM S1 Studio click on the icon...

Page 123: ...Getting Started P72x EN GS C21 MiCOM P721 P723 Page 13 24 Click on the Quick Connect button at the top left of the application Create a new system or open an existing one...

Page 124: ...presented options Select a port from the presented options Upon a successful connection a dialog will be displayed showing device type model number and plant reference Options for language device nam...

Page 125: ...ly create a default system if one does not already exist Systems are not opened automatically unless Reopen last System at start up is checked in Preferences To create a new system By default the wind...

Page 126: ...ties are displayed in the Properties panel 3 5 4 Create a new substation Select the system the menu bar is updated with new device new substation close delete paste properties and options icons Create...

Page 127: ...on click on new voltage level button 3 5 5 Create a new voltage level Select the substation and click on new station level button or select the menu using right click In the Create a new voltage level...

Page 128: ...ce Click on new device button or select the menu using right click Select the device type and if necessary the communications protocole mode that will be used to send the file to the device 1 2 1 1 2...

Page 129: ...RAMETERS Description menu 3 5 8 Open Settings File To open an existing file If the file is saved or if the relay is not connected open the Settings folder and open the Settings file If the relay is co...

Page 130: ...default settings Click on Open Default Settings File Option in the File menu Select the device type then the communication protocol Select the device type and click on the Next button Select the Model...

Page 131: ...24 3 6 Presentation and analysis od disturbance The reading and analisys of disturbance is performed using Wavewin To open Wavewin using Tools menu MiCOM S1 Studio The Wavewin File Manager is displaye...

Page 132: ...tarted Page 22 24 MiCOM P721 P723 4 WITHDRAWING MODULE FROM CASE Remove the top and bottom hinged covers Depose the four retaining screws in the top and the bottom side of the relay These screws retai...

Page 133: ...er the upper hinged cover above the LCD Turn the lock pin 90 to the left Insert the screwdriver into the second hole under the lower hinged cover and the lower lock pin is turned 90 to the right By th...

Page 134: ...eider electric com ccc Do not forget to give the serial number and reference of the MiCOM product The MiCOM product reference and serial numbers are documented under the upper hinged cover on the fron...

Page 135: ...Application Guide P12x EN AP C21 MiCOM P721 P723 APPLICATION GUIDE...

Page 136: ......

Page 137: ...ternal and external faults 15 3 APPLYING THE MiCOM P72X 17 3 1 Single phase applications restricted earth fault and balanced earth fault protection 17 3 2 Three phase applications 20 3 3 Buswire super...

Page 138: ...ch between active groups 45 5 3 Priority 46 6 MAINTENANCE MODE 47 7 LOGIC EQUATIONS P721 P723 47 8 REAL TIME CLOCK SYNCHRONIZATION VIA OPTO INPUTS 47 9 EVENT RECORDS 48 10 FAULT RECORDS 48 11 INSTANTA...

Page 139: ...tion by fire In addition the protection must be high speed in operation to minimize damage and maintain system stability It must also be absolutely stable under all through fault conditions because fa...

Page 140: ...ce earthed 1 5 Generator Motor Protection The same calculation principles that apply for the three phase protection of busbars can be applied to motors and generators although special consideration of...

Page 141: ...n voltages As shown in FIGURE 1 this arrangement provides no operating flexibility All the breakers must trip for any busbar fault FIGURE 1 SINGLE BUSBAR ARRANGEMENT 2 2 Double busbar with transfer Wi...

Page 142: ...ll bus section and bus coupler breakers are closed During maintenance of a feeder breaker the transfer bus is energized from the selected main or reserve bus by the transfer breaker and the feeder byp...

Page 143: ...f the mesh and four circuit breakers used to complete the mesh interconnection FIGURE 4 MESH BUSBAR SCHEME The protection shown consists of a fully discriminative scheme with a relay at each corner A...

Page 144: ...ar all the breakers connected to that busbar would remain open to isolate that busbar FIGURE 6 ONE AND A HALF BREAKER SCHEME A single busbar scheme is applied to each busbar The protection scheme does...

Page 145: ...ultant current to operate a relay for internal faults only Theoretically such a system is unaffected by through faults but in practice the associated current transformer may not behave ideally when th...

Page 146: ...ilizing resistor RST is used in series with the relay circuit to improve the stability of the relay under external fault conditions This resistor limits the spill current during the condition describe...

Page 147: ...he setting is determined the scheme sensitivity can be calculated by considering the relay operating current reflected to the primary plus the excitation current of the CTs connected in parallel wheth...

Page 148: ...losed in a 20TE case that may be used in high impedance differential schemes Three options of stabilizing resistances are provided Each option provides four resistance values that are determined by co...

Page 149: ...be fed from the supply system and the generator Similarly the internal fault level on motors and shunt reactors will be considerably higher than the values used in the stability calculations motor st...

Page 150: ...rosil unit should limit the voltage to 1500 V rms if possible The Metrosil units normally recommended to be used with 1 A CTs are shown in the following table Nominal Characteristics Recommended Metro...

Page 151: ...or and the full power non linear resistor Schneider Electric has developed a spreadsheet tool to assist in determining which option is suitable for a given application This tool is available on reques...

Page 152: ...RST it can be neglected The high impedance differential scheme requires that RCT RL is kept low To keep RL as low as possible it is recommended that the junction point physical connection of the curr...

Page 153: ...easing voltage on the CT secondary and thus will activate the REF protection The high impedance differential technique ensures that the impedance of the circuit is sufficiently so that the differentia...

Page 154: ...AM FIGURE 14 to FIGURE 17 show how the P721 is implemented in REF and BEF applications using 1 A connections FIGURE 14 RESTRICTED EARTH FAULT PROTECTION OF A 3 PHASE 3 WIRE SYSTEM APPLICABLE TO STAR C...

Page 155: ...AULT PROTECTION FOR THE DELTA WINDING OF A POWER TRANSFORMER WITH THE SUPPLY SYSTEM EARTHED 1 A CONNECTIONS SHOWN FIGURE 16 RESTRICTED EARTH FAULT PROTECTION OF A 3 PHASE 4 WIRE SYSTEM APPLICABLE TO S...

Page 156: ...t of current transformers to provide security against maloperation It is desirable that the primary operating current does not exceed 30 of the prospective minimum fault current The primary operating...

Page 157: ...rm whenever the time delayed supervision element is asserted FIGURE 19 to FIGURE 21 show how the P723 is implemented in three phase high impedance differential protection applications using a 1 A conn...

Page 158: ...ARTH FAULT DIFFERENTIAL PROTECTION FOR AN AUTO TRANSFORMER WITH CTS AT THE NEUTRAL STAR POINT 49 RA RST 50 v 51 RB RST 52 v 53 RC RST 54 v Protective relays A B C A B C P2 P1 S2 S1 P2 P1 S2 S1 P1 P2 S...

Page 159: ...FIGURE 18 Buswire supervision elements are provided to monitor for a continuous low level of spill current After a time delay this function would usually short circuit the AC buswires to ensure stabi...

Page 160: ...ng of the stabilizing resistor and varistor As shown in FIGURE 23 RL2 is used to short the high impedance differential path RL2 is asserted whenever the differential element trips or the buswire super...

Page 161: ...configure the buswire shorting contacts as follows Set three logic equations as follows EQUATION A EQUATION A 00 operator EQUATION A 00 operand 95A tSup T Operate 0 00 s T Reset 0 00 s EQUATION B EQUA...

Page 162: ...tion trips when the protection is out of service and when the buswire supervision element is asserted This is required to avoid unnecessary overheating of the stabilizing resistor and varistor The hig...

Page 163: ...Aux P723 N O watchdog contact Vdc Vdc 86 1 86 2 86 3 86 P723 RL1 Differential trip Vdc Vdc P4502ENa FIGURE 25 P723 HIGH IMPEDANCE PATH SHORTED NOTES 1 The protection watchdog contact is normally open...

Page 164: ...he breaker is still closed the 86BF associated to that particular breaker should be energized Meanwhile the 86BF associated to the other breakers should not be energized This is done by wiring one 52a...

Page 165: ...g led in the relay is asserted and the message Inconsistent V R ratio is displayed A B C 11kV 415V 1500 5A P1527ENc Transformer 1MVA Data 11kV 415V Burdens Dyn11 X 5 R 0 04W L RCT 0 3W RCT RCT RL RL R...

Page 166: ...r a solidly earthed power transformer is approximately 30 of the full load current we can calculate that a setting of less than 1 391 A is required on the relay 1 391A 300 1391 2A 0 3 0 3 FLC CTratio...

Page 167: ...dered is 16 and the maximum K factor is 1 with a secondary winding resistance of 0 3 or lower and a magnetizing current at 26 78 V of less than 0 22 A 4 1 1 5 Non linear resistors If the peak voltage...

Page 168: ...Page 32 52 MiCOM P721 P723 4 1 1 6 Relay settings The P72x differential element settings are as follows The trip command should be configured as Trip 87N tDiff so that relay output 1 is asserted when...

Page 169: ...RE 29 RESTRICTED EARTH FAULT PROTECTION ON A TRANSFORMER 4 1 2 1 Stability voltage calculation The transformer full load current IFLC is 525A 3 10 11 10 10 3 6 FLC I To calculate the stability voltage...

Page 170: ...ansformers Assuming that the CT is 5 VA 5P20 the knee point voltage can be calculated as V 100 20 1 5 ALF In VA Vk 4 1 2 3 Stability voltage re calculation The knee point voltage of the CTs should be...

Page 171: ...is 0 01 A By re arranging the equation the relay setting can be calculated A 23 0 01 0 4 600 160 nI N I I nI I N I current Operating Effective Primary e P S e S P If the Input selection is set to Curr...

Page 172: ...ult 343V 38 7 0 5 0 600 5249 R R R 2 R V r ST L CT F F I As indicated previously the CT knee point voltage is100 V then the peak voltage can be estimated as 441V 100 343 2x100 2 V V 2V 2 V K F K P Thi...

Page 173: ...iscriminating zone for each bus bar section and one P72x is configured as the overall check zone Any circuit in FIGURE 31 may be transferred from one bar to the other by isolator switches Auxiliary co...

Page 174: ...tacts in the trip circuit so the trip contact from the appropriate busbar scheme is allowed to trip the breaker In the closing circuit use normally closed contacts in parallel with the blocking contac...

Page 175: ...ating to calculate the setting Using the switchgear rating allows for any future expansion of the busbar 15308A 3 132kV 3500MVA 3 x Voltage rating Switchgear current fault through Maximum F I Required...

Page 176: ...e less than 30 of the minimum fault current and more than the full load current of the largest incomer Therefore if one of the incomer CTs becomes open circuit the differential protection will not mal...

Page 177: ...relay setting of 0 8 A is suitable for the check zone 4 2 5 Stabilizing resistor calculation The required value of stabilizing resistor RST is 102 0 8 81 Diff I Threshold 87 V R S ST For this applica...

Page 178: ...trosil consists of three discs connected independently for this three phase application It may be possible to use the P79x accessory Two non linear resistors options are available and they are defined...

Page 179: ...s The differential element either check zone or discriminating zone should be set as follows The buswire supervision element should be set as follows The trip command should be configured as Trip 87 t...

Page 180: ...pplications the machine contribution to an external fault should be used in the stability voltage calculation and this can be significantly lower than the maximum internal fault current that should be...

Page 181: ...ay Using a normally open contact this means that an open contact indicates that the active group is Group 1 a closed contact indicates that the active group is Group 2 5 1 Change of setting group done...

Page 182: ...t panel the priority is given to the user that takes local control of the relay when entering a password Change of the setting group using a remote command is not allowed while the password is active...

Page 183: ...y the external wiring to the relay output contacts To do this the user must assign a 1 to any of the output contacts which will close the contact and the continuity of the wiring can be verified 7 LOG...

Page 184: ...are logged some time after the actual fault record happens The user can view event records through the front panel interface through the EIA RS 232 port or remotely through the rear EIA RS 485 port 11...

Page 185: ...rent wave shapes are related to the ratio of the CT kneepoint voltage Vk to relay circuit impedance The stability voltage setting ST s S R I V is determined by the current setting and the stabilizing...

Page 186: ...hold for the 0 004 to 2In range must not exceed 20In FIGURE 35 shows the CT requirements when the P72x is used in a REF BEF application and the Measurement Mode is set to Fourier The maximum K factor...

Page 187: ...characteristics shown in FIGURE 38 FIGURE 39 and FIGURE 40 are valid when 5 X R 120 0 5 If 50 and 87N Threshold I Diff 0 1In FIGURE 38 shows the CT requirements when the P72x is used in a busbar appli...

Page 188: ...0 02 0 03 0 04 0 05 0 06 average op time s K average op time stable unstable FIGURE 39 CT REQUIREMENTS BUSBAR FAST SAMPLE MODE FIGURE 40 shows the CT requirements when the P72x is used in a busbar ap...

Page 189: ...Communication database P72x EN CT A11 MiCOM P721 P723 COMMUNICATION DATABASE...

Page 190: ...P72x EN CT A11 Communication database MiCOM P721 P723 BLANK PAGE...

Page 191: ...Communication database P72x EN CT A11 MiCOM P721 P723 MODBUS DATABASE MiCOM P721 P723 VERSION V11...

Page 192: ...P72x EN CT A11 Communication database Page 2 78 MiCOM P721 P723 BLANK PAGE...

Page 193: ...ation remote signalling and measurements 9 3 3 Page 1h General remote parameters part 1 12 3 4 Page 2h Setting group 1 remote parameters 16 3 5 Page 3h Setting group 2 remote parameters 17 3 6 Page 4h...

Page 194: ...32 4 1 Disturbance record additional information 44 4 1 1 MODBUS request definition used for disturbance record 44 4 1 2 Request to know the number of disturbance records in SRAM 44 4 1 3 Service req...

Page 195: ...ose of this document This document describes the characteristics of the different communication protocol of MiCOM P721 and P723 relays The available communication protocols on the relay are listed bel...

Page 196: ...800 9600 19200 38400 Transmission mode of the configured characters by operator dialog Mode 1 start 8 bits 1 stop total 10 bits 1 start 8 bits even parity 1 stop total 11 bits 1 start 8 bits odd parit...

Page 197: ...sponse Frame size received from MiCOM P721 and P723 relays 2 6 1 Frame size received by the protection device slave Frame transmitted by the master query Slave number Function code Information CRC16 1...

Page 198: ...he only case of non reply by MiCOM P721 and P723 relays to a master query If the CRC is good but the MiCOM relay can not process the query it sends an exception response Warning frame sent by the MiCO...

Page 199: ...status Fast 8h Remote data and time X X They are completely listed below 3 2 Page 0h Product information remote signalling and measurements Read access only Read access only Legend Reserved Free for f...

Page 200: ...status Binary 1 F17 0 0019 Information of 87 DIFF status Binary 1 F17 0 001A Information of 95N SUP status Binary 1 F16 0 001B Information of 87N DIFF status Binary 1 F16 0 001C 001D Information of ge...

Page 201: ...value of TC secondary CAN format In Add 0007h F1 0051 Phase B Amplitude value of TC secondary CAN format In Add 0007h F1 0052 Phase C Amplitude value of TC secondary CAN format In Add 0007h F1 0053 E...

Page 202: ...and 4 00 ZZ F10 ST 010C Reserved 010D Logical input Configuration of logical inputs active Binary 1 F11 FFFFh 010E Reserved 010F AC DC voltage Type applied to the logical inputs 0 1 1 F50 0 DC 0110 0...

Page 203: ...5 103 only Signals measurements blocking 0 1 1 F24 0 013B IEC870 5 103 only measurements enabling 0 3 1 F81 3 ASDU 3 4 9 013C 013F Reserved 0 0140 Config setting group Setting group 1 2 1 F51 1 Group...

Page 204: ...0 ms F1 0 0180 Output relay allocation Trip Binary 1 F14 0 no conf 0181 87 DIFF Binary 1 F14 0 no conf 0182 87 tDIFF Binary 1 F14 0 no conf 0183 87CZ check zone Binary 1 F14 0 no conf 0184 Buswire sho...

Page 205: ...14 0 no conf 01A4 Logical input 5 energized Binary 1 F14 0 no conf 01A5 01A6 Reserved 01A7 CB failure 50BF Binary 1 F14 0 no conf 01A8 Active setting group 2 Binary 1 F14 0 no conf 01A9 Control trip f...

Page 206: ...60000 1 10 ms F1 0 01EB Equation F falling tempo 0 60000 1 10 ms F1 0 01EC Equation G rising tempo 0 60000 1 10 ms F1 0 01ED Equation G falling tempo 0 60000 1 10 ms F1 0 01EE Equation H rising tempo...

Page 207: ...rvision 95N SUP function Function 0 1 1 F24 0 No 0261 95N Current ISUP Threshold 1 100 1 In 100 F1 100 0262 95N Voltage VSUP Threshold 5 2000 10 100 mV F1 2000 0263 95N tSUP timer value 50 300 1 10 ms...

Page 208: ...ion A 11 operator 0 3 1 F71 0 0517 Equation A 11 operand 0 24 1 F72 0 0518 Equation A 12 operator 0 3 1 F71 0 0519 Equation A 12 operand 0 24 1 F72 0 051A Equation A 13 operator 0 3 1 F71 0 051B Equat...

Page 209: ...n C 08 operator 0 3 1 F71 0 0551 Equation C 08 operand 0 24 1 F72 0 0552 Equation C 09 operator 0 3 1 F71 0 0553 Equation C 09 operand 0 24 1 F72 0 0554 Equation C 10 operator 0 3 1 F71 0 0555 Equatio...

Page 210: ...n E 05 operand 0 24 1 F72 0 058C Equation E 06 operator 0 3 1 F71 0 058D Equation E 06 operand 0 24 1 F72 0 058E Equation E 07 operator 0 3 1 F71 0 058F Equation E 07 operand 0 24 1 F72 0 0590 Equatio...

Page 211: ...n G 03 operator 0 3 1 F71 0 05C7 Equation G 03 operand 0 24 1 F72 0 05C8 Equation G 04 operator 0 3 1 F71 0 05C9 Equation G 04 operand 0 24 1 F72 0 05CA Equation G 05 operator 0 3 1 F71 0 05CB Equatio...

Page 212: ...FA Equation H 13 operator 0 3 1 F71 0 05FB Equation H 13 operand 0 24 1 F72 0 05FC Equation H 14 operator 0 3 1 F71 0 05FD Equation H 14 operand 0 24 1 F72 0 05FE Equation H 15 operator 0 3 1 F71 0 05...

Page 213: ...turbance data words 0B00 to 0BFA 250 disturbance data words 0C00 to 0CFA 250 disturbance data words 0D00 to 0DFA 250 disturbance data words 0E00 to 0EFA 250 disturbance data words 0F00 to 0FFA 250 dis...

Page 214: ...Watch dog relay 95 tSUP Bit 5 Output relay 5 87 tDIFF Bit 6 Output relay 6 Reserved Bit 7 Output relay 7 95N tSUP Bit 8 Output relay 8 87N tDIFF Bit 9 Reserved Reserved Bit 10 Logic input 1 Logic inpu...

Page 215: ...ent date millisecond Words N 5 6 7 8 if data format is Inverted IEC 870 5 4 CP56Time2a See format page 8h Word n 9 Acknowledge 0 event non acknowledged 1 event acknowledged Code Meaning of the event T...

Page 216: ...38 Change of logical input state F12 39 40 41 87 tDIFF fault tripping F13 42 43 44 87N tDIFF fault tripping F13 45 46 47 48 tAux 1 fault tripping F13 49 tAux 2 fault tripping F13 50 Output relays com...

Page 217: ...ult tripping F13 108 tEquation B fault tripping F13 109 tEquation C fault tripping F13 110 tEquation D fault tripping F13 111 tEquation E fault tripping F13 112 tEquation F fault tripping F13 113 tEqu...

Page 218: ...earth fault origin format F77 9 Fault recording starting origin format F78 10 Fault value 11 Phase A current value nominal value 12 Phase B current value nominal value 13 Phase C current value nominal...

Page 219: ...t and outputs 3B00h 4 IA 3B01h 4 IB 3B02h 4 IC 3B03h 4 IE 3B04h 4 Frequency 3B05h 4 Logic input and outputs 3C00h 5 IA 3C01h 5 IB 3C02h 5 IC 3C03h 5 IE 3C04h 5 Frequency 3C05h 5 Logic input and output...

Page 220: ...r n Words n 3 4 Oldest disturbance record date second Words n 5 6 Oldest disturbance record date millisecond Word n 7 Disturbance record starting origin 1 trip relay RL1 2 instantaneous threshold 3 re...

Page 221: ...2 instantaneous threshold 3 remote command 4 logic input Word n 29 Acknowledge Word n 30 Number of Previous Disturbance record n 4 Words n 31 32 Previous disturbance record date second Words n 33 34...

Page 222: ...out 1 even 2 odd F6 Unsigned integer Tripping configuration and latching Word 1 bit 0 bit 1 87 tDIFF bit 2 bit 3 bit 4 87N tDIFF bit 5 bit 6 bit 7 bit 8 bit 9 tAux 1 bit 10 tAux 2 bit 11 bit 12 bit 13...

Page 223: ...mote control Word 1 bit 0 Output tripping and auxiliary contact delatched bit 1 1st alarm acknowledgement bit 2 All alarms acknowledgement bit 3 Remote control tripping bit 4 bit 5 Setting group chang...

Page 224: ...umber 1 bit 1 logical input number 2 bit 2 logical input number 3 bit 3 logical input number 4 bit 4 logical input number 5 bit 5 bit 6 bit 7 bit 8 bit 9 bit 10 bit 11 bit 12 bit 13 bit 14 bit 15 bit...

Page 225: ...bit 12 bit 13 bit 14 bit 15 F14 Unsigned integer Output relay allocation bit 0 Logic output relay 2 bit 1 Logic output relay 3 bit 2 Logic output relay 4 bit 3 Logic output relay 5 bit 4 Logic output...

Page 226: ...7 95N tSUP bit 8 87N DIFF bit 9 87N tDIFF bit 10 bit 11 bit 12 95A tSUP bit 13 95B tSUP bit 14 95C tSUP bit 15 CB failure 50BF Word 2 bit 0 bit 16 Logical input 1 energized bit 1 bit 17 Logical input...

Page 227: ...aintenance mode bit 3 bit 19 Auxiliary input 3 bit 4 bit 20 Auxiliary input 4 bit 5 bit 21 bit 6 bit 22 Local mode bit 7 bit 23 Synchronization bit 8 bit 24 87CZ check zone bit 9 bit 25 bit 10 bit 26...

Page 228: ...ble 0 Communication non available 1 Communication available F31 Reserved F32 Unsigned integer 0 Disturbance record start condition on INSTANTANEOUS 1 Disturbance record start condition on TRIPPING F33...

Page 229: ...1 CB failure 50BF bit 2 Pole phase A opening bit 3 Pole phase B opening bit 4 Pole phase C opening bit 5 bit 6 tAux 1 bit 7 tAux 2 bit 8 bit 9 CB failure delay started start tBF bit 10 bit 11 bit 12...

Page 230: ...f the relay front MENU 1 setting group change on logical input state LEVEL of digital input F48 Unsigned integer Communication date format 0 Private Format Date 1 IEC Format Date F50 Unsigned integer...

Page 231: ...value 0 relay normally de energized bit value 1 relay normally energized F61 Unsigned integer Information of equation status bit 0 tEquation A bit 1 tEquation B bit 2 tEquation C bit 3 tEquation D bit...

Page 232: ...energized 19 Logic input 2 energized 20 Logic input 3 energized 21 Logic input 4 energized 22 Logic input 5 energized 23 Active setting group 2 24 CB Failure F73 Unsigned integer LED status bit 0 if L...

Page 233: ...hase earth fault origin 0 none 1 phase A 2 phase B 3 phase C 4 phases A B 5 phases A C 6 phases B C 7 phases A B C 8 earth F78 Unsigned integer Fault recording starting origin Trip origin 0 none 1 Rem...

Page 234: ...one or several requests to upload the disturbance record data It depends of the number of samples 4 compulsory Send a request to upload the index frame 4 1 2 Request to know the number of disturbance...

Page 235: ...is event request may be answered an error message with the error code EVT_EN_COURS_ECRIT 5 An event is being written into the saved RAM NOTE On event retrieval two possibilities exist regarding the ev...

Page 236: ...fault record acknowledgement on event retrieval a Automatic fault record acknowledgement on fault retrieval The bit12 of the remote order frame format F9 mapping address 0400h shall be set to 0 On fau...

Page 237: ...Communication database P72x EN CT A11 MiCOM P721 P723 Page 47 78 IEC 60870 5 103 DATABASE MiCOM P721 P723 VERSION V11...

Page 238: ...P72x EN CT A11 Communication database Page 48 78 MiCOM P721 P723 BLANK PAGE...

Page 239: ...isation 52 1 7 Spontaneous events 52 1 8 General interrogation 52 1 9 Cyclic measurements 53 1 10 Commands 53 1 11 Disturbance records 53 1 12 Blocking of monitor direction 53 2 APPENDIX 1 54 2 1 Spon...

Page 240: ...P72x EN CT A11 Communication database Page 50 78 MiCOM P721 P723 BLANK PAGE...

Page 241: ...layer Connection is available for IEC60870 5 103 through the rear RS485 port It is possible to select both the relay address and baud rate using the front panel interface Following a change a reset c...

Page 242: ...number to identify the type of relay e g P723 In addition to the above identification message if the relay has been powered up it will also produce a power up event 5 6 Time synchronisation The relay...

Page 243: ...ay will respond to other commands with an ASDU 1 with a cause of transmission COT of negative acknowledgement of a command If the relay takes in account the command it will answer with an ASDU 1 with...

Page 244: ...ISSION and COMMON ADDRESS OF ASDU The corresponding numbers with private messages option inactive are given just below FUN 208 Function type in Public range for High impedance Differential Protections...

Page 245: ...3 FUN 210 INF 178 TYP 1 COT 1 ADDR Logical output 4 FUN 210 INF 179 TYP 1 COT 1 ADDR Logical output 5 Watch dog FUN 210 INF 180 TYP 1 COT 1 ADDR Logical output 6 FUN 210 INF 181 TYP 1 COT 1 ADDR Logi...

Page 246: ...al Start pick up FUN 208 INF 84 TYP 2 COT 1 ADDR Breaker failure FUN 208 INF 85 TYP 2 COT 1 ADDR Trip 95 Diff FUN 210 INF 17 TYP 2 COT 1 ADDR Trip 95A Diff FUN 210 INF 42 TYP 2 COT 1 ADDR Trip 95B Dif...

Page 247: ...information are Class 1 data they are systematically sent to the master station during a General Interrogation The list of processed data following a General Interrogation is given below it is a sub a...

Page 248: ...ick up 87 Diff FUN 210 INF 10 TYP 2 COT 9 ADDR Start pick up 95N Diff FUN 210 INF 12 TYP 2 COT 9 ADDR Start pick up 87N Diff FUN 210 INF 13 TYP 2 COT 9 ADDR Start pick up Check Zone FUN 210 INF 24 TYP...

Page 249: ...ge will be an event of ASDU 6 type General Interrogation Initialization command ASDU 7 This command starts the relay interrogation The relay then sends a list of data containing the relay state see li...

Page 250: ...or a message indicating Reset CU FUN 208 INF 5 TYP 3 COT 4 or a message indicating Reset FCB FUN 208 INF 5 TYP 2 COT 3 Each identification message of the relay ASDU 5 contains the manufacturer name i...

Page 251: ...nel 2 Ib current Phase L2 Channel 3 Ic current Phase L3 Channel 4 IN current Earth 12 Identifiers of tags transmitted in ASDU 29 logical informations Tag number 1 General start FUN 208 INF 84 Tag numb...

Page 252: ...P72x EN CT A11 Communication database Page 62 78 MiCOM P721 P723 BLANK PAGE...

Page 253: ...Communication database P72x EN CT A11 MiCOM P721 P723 DNP 3 0 DATABASE MiCOM P721 P723 VERSION V11...

Page 254: ...P72x EN CT A11 Communication database Page 64 78 MiCOM P721 P723 BLANK PAGE...

Page 255: ...NTS 1 INTRODUCTION 67 1 1 Purpose of this document 67 1 2 DNP V3 00 device Profile 67 1 3 Implementation Table 70 1 4 Point List 72 1 4 1 Binary Input Points 72 1 4 2 Binary Output Status Points and C...

Page 256: ...P72x EN CT A11 Communication database Page 66 78 MiCOM P721 P723 BLANK PAGE...

Page 257: ...lly compliant with DNP 3 0 Subset Definition Level 2 contains many Subset Level 3 features and contains some functionality even beyond Subset Level 3 1 2 DNP V3 00 device Profile The following table p...

Page 258: ...ts received with qualifiers 17 or 28 will be responded with qualifiers 17 or 28 For change event object requests qualifiers 17 or 28 are always responded 16 bit and 32 bit Analog Change Events with Ti...

Page 259: ...ports Binary Input Change Events when no specific variation requested Never Only time tagged for P721 and P723 Only non time tagged Configurable Reports time tagged Binary Input Change Events when no...

Page 260: ...e without Time 1 read 06 no range or all 07 08 limited qty 129 response 17 28 index 2 2 default see note 1 Binary Input Change with Time 1 read 06 no range or all 07 08 limited qty 129 response 17 28...

Page 261: ...1 start stop 17 28 index see note 2 30 4 16 Bit Analog Input without Flag 1 read 00 01 start stop 06 no range or all 07 08 limited qty 17 28 index 129 response 00 01 start stop 17 28 index see note 2...

Page 262: ...r 1 Change Event Object Number 2 Request Function Codes supported 1 read Static Variation reported when variation 0 requested 1 Binary Input without status Change Event Variation reported when variati...

Page 263: ...B 0 1 36 X X tEquation C 0 1 37 X X tEquation D 0 1 38 X X tEquation E 0 1 39 X X tEquation F 0 1 40 X X tEquation G 0 1 41 X X tEquation H 0 1 42 X X Shifting to maintenance mode 0 1 43 X X Major ma...

Page 264: ...us Value Supported Control Relay Output Block Fields 0 X X De Latch of relays 0 Unpaired Pulse On Paired Trip Pulse On Paired Close Pulse On 1 X X Acknowledgement of the 1st alarm 0 Unpaired Pulse On...

Page 265: ...quest Function Codes supported 1 read 7 freeze 8 freeze noack 9 freeze and clear 10 freeze and clear noack Static Variation reported when variation 0 requested 5 32 Bit Binary Counter without Flag Cha...

Page 266: ...e or remote through DNP control Every Analog Inputs points are included in class 0 polls because they are included in one of classes 1 2 or 3 Analog Inputs Static Steady State Object Number 30 Change...

Page 267: ...721 presence P723 presence Name Description Initial Value Scaling and Units represent ation of 32767 see above Valid Range Change Event Dead band Initial Change Event Class 1 2 3 or none 14 X X Fault...

Page 268: ...P72x EN CT A11 Communication database Page 78 78 MiCOM P721 P723 BLANK PAGE...

Page 269: ...Commissioning and Maintenance P72x EN CM C21 MiCOM P721 P723 COMMISSIONING AND MAINTENANCE GUIDE...

Page 270: ......

Page 271: ...Auxiliary supply 6 3 7 Logic inputs 6 3 8 Logic outputs 7 3 9 RS 485 rear communication 7 4 SETTING CHECK 8 4 1 Settings 8 4 2 Measurements 8 4 2 1 MiCOM P721 8 4 2 2 MiCOM P723 8 4 3 Phase differenti...

Page 272: ...Fast mode 18 4 6 Earth bus wire supervision 95N Earth Bus Wire Sup 19 4 7 REF BEF Primary Injection Tests 19 4 7 1 Correct set up check 19 4 8 Busbar Primary Injection Tests 21 4 9 Final checks 23 5 M...

Page 273: ...e settings applied to the relay using the appropriate setting software MiCOM S1 preferred method From the front panel user interface REMINDER It is not possible to download new setting software while...

Page 274: ...mat Single phase injection test set 1 current 0 to 50 A timer precision 1 ms Three phase injection test set 3 currents 0 to 50 A timer precision 1 ms 2 1 2 Additional commissioning test equipment 1 mu...

Page 275: ...bility For further details see the chapter Handling Installation and Case Dimensions IN 3 3 Visual inspection Carefully examine the relay to see if there has been any possible deterioration following...

Page 276: ...d inputs are functioning correctly The P723 relays have 5 opto isolated inputs whereas the P721 relays have 2 opto isolated inputs The opto inputs should be energized one at a time The status of the i...

Page 277: ...menu display changes to the value shown in the following table to indicate the new state of the output OUTPUT MiCOM P72x models OP PARAMETERS RelayStatus cell value RL 1 2 4 6 Terminals P721 P723 0000...

Page 278: ...ent and the frequency The MiCOM P723 measures the phase or earth differential currents true rms the maximum phase or earth differential currents true rms and the frequency The MiCOM P723 measures eart...

Page 279: ...upervision or the check zone To monitor the 87 Diff operation assign it to any of the relay outputs available Rl2 to Rl8 The logic scheme of the three phase high impedance differential protection is s...

Page 280: ...P72x EN CM C21 Commissioning and Maintenance Page 10 28 MiCOM P721 P723 FIGURE 2 I DIFF TESTS WIRING...

Page 281: ...f Values to be recorded 87 Threshold I Diff for each phase Time delay tDiff for each phase 87 Threshold I Diff check If the time delay 87 Fault Timer tdiff is short gradually increase the injection cu...

Page 282: ...iff LED on if programmed Trip output closes 87 tDiff output closes if programmed 87 Fault Timer tdiff check Apply a current onto phase A and measure the time delay 87 tDiff by presetting the current a...

Page 283: ...Commands Note that 87N tDiff is affected by the timer the bus wire supervision and any blocking logic On the other hand 87N Diff is instantaneous and it is not affected by any blocking logic or the bu...

Page 284: ...3 then setting cell Protection line select under Configuration Connection may be set as either 87N Earth or 87 Phase If the cell Description is set to P721 then setting cell Protection line select und...

Page 285: ...closes 87N tDiff output closes if programmed 87N Flt Timer tdiff check Apply a current onto the single phase CT input and measure the time delay 87N tDiff by pre setting the current above the 87N Thr...

Page 286: ...the injection current up to the value of 2 2 87N Threshold I Diff If the time delay 87N Fault Timer tdiff is long inject 0 95 x 2 2 87N Threshold I Diff and check that there is no tripping Then inject...

Page 287: ...also asserted If the time delay 95 Fault Timer t Sup is long inject 0 95 x 95 Threshold I Sup and check that 95 Sup is not asserted Then inject 1 1 x 95 Threshold I Sup and check 95 Sup is asserted Ke...

Page 288: ...tSup check Apply a current onto one of the phases and measure the time delay 95 tSup by presetting the current above the 95 Threshold I Sup 2 x 95 Threshold I Sup I injected 87 Threshold I Diff and ve...

Page 289: ...three phase applications In this case the 95N Earth Bus wire Sup should be tested the same way as the 95 Phase Bus wire Sup in the P723 95N Sup and 95N tSup should be verified Check section 4 5 for fu...

Page 290: ...ratio indicates that one of the current transformer connections is reversed This test should be repeated for the B phase CT and neutral CT and then for the C phase CT and neutral CT The sensitivity of...

Page 291: ...circuited A B C Primary Injection Test Set A2 AC Supply P72x 49 50 R St P72x 51 52 R St P72x 53 54 R St A B C P79x Auxiliary relay Protection trip contact Protection N O watchdog contact V V Protecti...

Page 292: ...on ammeter A2 to A3 should closely approximate to the current transformer ratio If the polarity is correct then only a few milliamperes may be read on A1 To verify the ratio and polarity of all curren...

Page 293: ...ng this test the P79x auxiliary relay should be kept energized thus the stabilizing resistor is not short circuited FIGURE 10 BUSBAR APPLICATION PRIMARY INJECTION SENSITIVITY TEST 4 9 Final checks The...

Page 294: ...rmed while the relay boots Background software tasks except for volatile memory tests are performed only when the relay boots and on any setting changes 5 1 1 Minor fault A communication failure is re...

Page 295: ...tive part is removed from the case Remove the upper and lower flap without exerting excessive force Remove the external screws Under the upper flap turn the extractor with a 3 mm screwdriver and extra...

Page 296: ...factory or service agent if given details of its serial number under the upper flap of the front panel With this serial number contact your Schneider Electric local dealer or Customer Contact Center...

Page 297: ...evice connected on the same LAN Check that the other devices on the same LAN answer to supervision requests 5 3 2 3 A remote command is not taken in account Problem The communication between the relay...

Page 298: ...P72x EN CM C21 Commissioning and Maintenance Page 28 28 MiCOM P721 P723 BLANK PAGE...

Page 299: ...Connection Diagrams P72x EN CO A11 MiCOM P721 P723 CONNECTION DIAGRAMS...

Page 300: ......

Page 301: ...ut Case earth Module terminal blocks viewed fromp rear with integral case earth link Watch dog 4 Programmable tripping output Programmable output Programmable output Case earth connection Port communi...

Page 302: ...ion are typical only 3 Earth terminals are typical only 4 The MICOM relays are shown with supply off Alternative Restricted Earth Fault Protection Delta connection L3 23 27 25 21 19 L5 L4 26 17 28 24...

Page 303: ...Commissioning Test Record Sheets P72x EN RS A11 MiCOM P721 P723 COMMISSIONING TEST RECORD SHEETS...

Page 304: ......

Page 305: ...10 2 4 3 87 Phase differential protection P723 only 10 2 4 4 95 Phase bus wire supervision P723 only 11 2 5 PROTECTION G2 Menu 11 2 5 1 87N Earth differential protection 11 2 5 2 95N Earth bus wire su...

Page 306: ...P72x EN RS A11 Commissioning Test Record Sheets Page 2 22 MiCOM P721 P723 BLANK PAGE...

Page 307: ...TINGS ON THE EQUIPMENT RATING LABEL 1 1 Relay identification Commissioning date Engineer Substation Circuit Network nominal frequency MiCOM Overcurrent relay model P721 P723 Serial number Rated curren...

Page 308: ...nt _______________ A A Phase B current _______________ A A Phase C current _______________ A A EARTH CT INPUT Earth current _______________ A A Phase protection test Theoretical value Relay value Thre...

Page 309: ...ff _______________ A I Diff Threshold A I Diff drop Threshold A Timer Fault Timer tdiff at 2 I Diff ______________ ms A Fault Timer tdiff at 10 I Diff ______________ ms A Reset Timer tReset at 2 I Dif...

Page 310: ...line select Earth Phase Input Selection Current Voltage If protection Line Earth E Gnd Text N E G Line CT Primary E Gnd CT Primary Primary earth CT ratio E Gnd CT Secondary Secondary earth CT ratio 1...

Page 311: ...Functions P721 P723 Yes Yes Yes Yes 87 Diff 87N Diff 87 tDiff 87N tDiff 87CZ Check zone 95 Sup 95N Sup 95 tSup 95N tSup 95A tSupA 95B tSupB 95C tSupC Input 1 Input 2 Input 3 Input 4 Input 5 tAux 1 tA...

Page 312: ...larm tAux1 YES NO Alarm tAux2 YES NO Alarm tAux3 P723 only YES NO Alarm tAux4 P723 only YES NO Alarm tAux5 P723 only YES NO 2 2 5 Inputs configuration Inputs P721 only 2 1 Inputs P723 only 5 4 3 2 1 V...

Page 313: ...col Communication YES NO Rear Comm Address Baud Rate 300 bds 600 bds 1 200 bds 2 400 bds 4 800 bds 9 600 bds 19 200 bds 38 400 bds Parity Odd Even None Data bits 7 8 Stop bits 1 2 Spont Event All IEC...

Page 314: ...ast sam ple mode Fourier mode 2 4 2 95N Earth bus wire supervision 95N Earth bus wire sup Yes No 95N Threshold I Sup In 95N Threshold V Sup V 95N Flt Timer t Sup s 95N Flt Timer t Reset s 95N Measure...

Page 315: ...Fourier mode 2 5 PROTECTION G2 Menu 2 5 1 87N Earth differential protection 87N Earth Diff protection Yes No 87N Threshold I diff In 87N Threshold V diff V 87N Flt Timer t Diff s 87N Flt Timer t Reset...

Page 316: ...87 Threshold V diff V 87 Flt Timer t Diff s 87 Check zone Yes No 87 Rst Timer t Reset s 87 Measure Filter Sample mode Fast sam ple mode Fourier mode 2 5 4 95 Phase bus wire supervision P723 only 95 P...

Page 317: ...tAux 2 Trip tAux 3 Trip tAux 4 Control Trip Trip Equ A Trip Equ B Trip Equ C Trip Equ D Trip Equ E Trip Equ F Trip Equ G Trip Equ H 2 6 2 Latch function allocation P721 P723 Function YES YES Latch 87N...

Page 318: ...2 tAux 3 tAux 4 2 6 4 Blocking Logic 1 function allocation P721 P723 Function Yes Yes 87N tDiff 87 tDiff tAux 1 tAux 2 tAux 3 tAux 4 2 6 5 OUTPUT RELAYS allocation P721 P723 RL2 RL3 RL4 RL5 RL6 RL7 RL...

Page 319: ...Yes Yes Yes Yes CB Fail t Aux 1 t Aux 2 t Aux 3 t Aux 4 Active group Control trip Input1 Input2 Input3 Input4 Input5 tEqu A tEqu B tEqu C tEqu D tEqu E tEqu F tEqu G tEqu H 2 6 6 LATCH OUTPUT RELAYS...

Page 320: ...nlatch Aux 1 Aux 2 Aux 3 Aux 4 Block Logic 2 Start Disturb Start Block Logic 1 Start Block Logic 2 Change setting Reset Leds Maint Mode Local Mode Synchro 87CZ Chk Zone 2 6 7 2 tAux Aux 1 Time tAux 1...

Page 321: ...NOT AND AND NOT A 12 OR OR NOT AND AND NOT A 13 OR OR NOT AND AND NOT A 14 OR OR NOT AND AND NOT A 15 OR OR NOT AND AND NOT T Operate ms T Reset ms Equ B Boolean Logic B 00 NOT B 01 OR OR NOT AND AND...

Page 322: ...D NOT C 12 OR OR NOT AND AND NOT C 13 OR OR NOT AND AND NOT C 14 OR OR NOT AND AND NOT C 15 OR OR NOT AND AND NOT T Operate ms T Reset ms Equ D Boolean Logic D 00 NOT D 01 OR OR NOT AND AND NOT D 02 O...

Page 323: ...D NOT E 12 OR OR NOT AND AND NOT E 13 OR OR NOT AND AND NOT E 14 OR OR NOT AND AND NOT E 15 OR OR NOT AND AND NOT T Operate ms T Reset ms Equ F Boolean Logic F 00 NOT F 01 OR OR NOT AND AND NOT F 02 O...

Page 324: ...D NOT G 12 OR OR NOT AND AND NOT G 13 OR OR NOT AND AND NOT G 14 OR OR NOT AND AND NOT G 15 OR OR NOT AND AND NOT T Operate ms T Reset ms Equ H Boolean Logic H 00 NOT H 01 OR OR NOT AND AND NOT H 02 O...

Page 325: ...me Fault date Active Set Group 1 2 Faulted phase None Phase A Phase B Phase C Earth Threshold Fault Magnitude A IA Diff R M S A IB Diff R M S A IC Diff R M S A IN Diff R M S A 2 7 2 INSTANTANEOUS Reco...

Page 326: ...P72x EN RS A11 Commissioning Test Record Sheets Page 22 22 MiCOM P721 P723 BLANK PAGE...

Page 327: ...Hardware Software Version P72x EN VC C21 History and Compatibility MiCOM P721 P723 HARDWARE VERSION HISTORY AND COMPATIBILITY...

Page 328: ......

Page 329: ...Hardware Software Version P72x EN VC C21 History and Compatibility MiCOM P721 P723 Page 1 4 CONTENTS 1 MiCOM P721 3 2 MiCOM P723 4...

Page 330: ...P72x EN VC C21 Hardware Software Version History and Compatibility Page 2 4 MiCOM P721 P723 BLANK PAGE...

Page 331: ...P721 Relay Type P721 Software Version Date of Issue Full Description of Changes S1 Compati bility Backward Compatibility with previous hardware V11 B 03 2009 V11 B software the first software for the...

Page 332: ...723 Relay Type P723 Software Version Date of Issue Full Description of Changes S1 Compati bility Backward Compatibility with previous hardware V11 B 03 2009 V11 B software is the first software for th...

Page 333: ......

Page 334: ...lmaison FRANCE Phone 33 0 1 41 29 70 00 Fax 33 0 1 41 29 71 00 www schneider electric com Publishing Schneider Electric Publication P72x EN T C21 10 2012 Customer Care Centre http www schneider electr...

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