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8.

Set the current to 200 % of the start level of the step 1, switch on the current
and check the definite time delay for trip signals TR1 and TRIP. Once the
measured negative sequence current exceeds the set start level

I2-1>

, the

settable definite timer

t1

starts to count and trip signals is released after the

set time delay has elapsed. The same test must be carried out to check the
accuracy of definite time delay for ALARM signal.

Note:

The output ALARM is operated by START signal.

9.

If inverse time is selected the trip signals TR1 and TRIP operates after a time
corresponding to the formula:

t s

I

[ ]











(

)

































=

− >

⋅

1

2 1

100

2

2

Multiple of Start

K

K

This means that if current jumps from 0 to 2 times start and negative
sequence capability value of generator

K1

is set to 10 sec and current start

level

I2-1>

is set to 10% of rated generator current, then TR1 and TRIP

signals operates at time equal to 250 sec ± tolerance.

10. Repeat the above-described tests for the step 2 of the function excluding the

inverse time testing.

11. Finally check that start and trip information is stored in the event menu.

Example

The CT ratios

sec

CTprim

CT

for all three phases is 1000 A,

IBase

is 1000 A, and the

following secondary currents are applied:

IL1

Ampl = 1.1 A

Angl = 15 deg

IL2

Ampl = 0.6 A

Angl = 97 deg

IL3

Ampl = 1.3 A

Angl = -135 deg

The service value output NSCURR indicating amplitude of negative sequence
current in primary amperes should be 962A approximative.

15.6.12.2

Completing the test

Continue to test another functions or end the test by changing the Test mode setting
to Off. Restore connections and settings to their original values, if they were
changed for testing purposes. Make sure that all built-in features for this function,
which shall be in operation, are enabled and with correct settings.

Section 15

1MRK 502 029-UEN A

Verifying settings by secondary injection

190

Installation and commissioning manual

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Содержание Relion 670 series

Страница 1: ...Relion 670 series Generator protection REG670 Installation and commissioning manual...

Страница 2: ......

Страница 3: ...Document ID 1MRK 502 029 UEN Issued September 2011 Revision A Product version 1 2 Copyright 2011 ABB All rights reserved...

Страница 4: ...ed or disclosed only in accordance with the terms of such license Trademarks ABB and Relion are registered trademarks of ABB Group All other brand or product names mentioned in this document may be tr...

Страница 5: ...roduct failure would create a risk for harm to property or persons including but not limited to personal injuries or death shall be the sole responsibility of the person or entity applying the equipme...

Страница 6: ...cerning electrical equipment for use within specified voltage limits Low voltage directive 2006 95 EC This conformity is the result of tests conducted by ABB in accordance with the product standards E...

Страница 7: ...ng delivery unpacking and checking 21 Section 5 Installing the IED 23 Overview 23 Dimensions 24 Case without rear cover 24 Case with rear cover 26 Flush mounting dimensions 28 Side by side flush mount...

Страница 8: ...ting the binary input and output signals 61 Making the screen connection 63 Making the electrical connection to the rotor and stator injection equipment 65 Connectors for injection unit REX060 couplin...

Страница 9: ...use of an internal failure 94 Self supervision HMI data 95 REX060 start up sequence 95 Section 8 Set up the PCM600 communication link per IED 97 Setting up communication between PCM600 and the IED 97...

Страница 10: ...unication 136 Verifying IEC communication 137 Fibre optic loop 137 Optical budget calculation for serial communication with SPA IEC 138 Section 13 Establishing connection and verifying the LON communi...

Страница 11: ...the test 156 Transformer differential protection T2WPDIF and T3WPDIF 157 Verifying the settings 157 Completing the test 158 Restricted earth fault protection low impedance REFPDIF 158 Verifying the se...

Страница 12: ...179 Checking operate and reset values 179 Completing the test 180 Breaker failure protection CCRBRF 180 Checking the phase current operate value IP 180 Checking the residual earth fault current opera...

Страница 13: ...els 194 Check of voltage differential trip and alarm levels 196 Check of trip and trip reset timers 197 Final adjustment of compensation for VT ratio differences 198 Completing the test 198 100 Stator...

Страница 14: ...g the operate value for the zero sequence function 211 Checking the operation of the du dt and di dt based function 212 Completing the test 212 Control 213 Synchrocheck energizing check and synchroniz...

Страница 15: ...3 Installation and commissioning 233 Commissioning tests 234 Periodic maintenance tests 234 Visual inspection 235 Maintenance tests 235 Preparation 236 Recording 236 Secondary injection 236 Alarm test...

Страница 16: ...10...

Страница 17: ...Installation and Engineeringmanual Commissioning manual manual Technical reference IEC09000744 V1 EN The Application Manual AM contains application descriptions setting guidelines and setting paramet...

Страница 18: ...ngineering of protection and control functions LHMI functions as well as communication engineering for IEC 61850 and DNP3 1 1 2 About the installation and commissioning manual The installation and com...

Страница 19: ...e personnel must be well experienced in using protection equipment test equipment protection functions and the configured functional logics in the protection 1 1 4 Related documents Documents related...

Страница 20: ...nd on www abb com substationautomation 1 1 5 Revision notes Revision Description First issue for 670 series version 1 2 A Minor corrections made Section 1 1MRK 502 029 UEN A Introduction 14 Installati...

Страница 21: ...ic electricity ESD Lethal high voltage circuits are also exposed when covers are removed Always use suitable isolated test pins when measuring signals in open circuitry Potentially lethal voltages and...

Страница 22: ...lways handle modules using a conductive wrist strap connected to protective ground and on a suitable antistatic surface Electrostatic discharge ESD may cause damage to the module since electronic circ...

Страница 23: ...shunt resistor REX062 unit The surface may be hot during normal operation 2 3 Note signs The protection assembly is designed for a maximum continuous current of four times rated value 1MRK 502 029 UE...

Страница 24: ...18...

Страница 25: ...tart A configuration done in the configuration and programming tool must also be available if the IED does not have a factory configuration downloaded The IED is unpacked and visually checked It is pr...

Страница 26: ...20...

Страница 27: ...the delivery 4 Check for transport damages If transport damage is discovered appropriate action must be taken against the latest carrier and the nearest ABB office or representative should be informed...

Страница 28: ...22...

Страница 29: ...variations powerful vibrations and shocks surge voltages of high amplitude and fast rise time strong induced magnetic fields or similar extreme conditions should be avoided Sufficient space must be a...

Страница 30: ...imensions 5 2 1 Case without rear cover xx08000164 vsd C B D E A IEC08000164 V1 EN Figure 1 Case without rear cover Section 5 1MRK 502 029 UEN A Installing the IED 24 Installation and commissioning ma...

Страница 31: ...2 x 19 265 9 223 7 201 1 252 9 205 7 190 5 203 7 187 6 6U 3 4 x 19 265 9 336 0 201 1 252 9 318 0 190 5 316 0 187 6 6U 1 1 x 19 265 9 448 3 201 1 252 9 430 3 190 5 428 3 465 1 187 6 482 6 The H and K...

Страница 32: ...5 2 2 Case with rear cover xx08000163 vsd C B D E A IEC08000163 V1 EN Figure 3 Case with rear cover Section 5 1MRK 502 029 UEN A Installing the IED 26 Installation and commissioning manual...

Страница 33: ...size mm A B C D E F G H J K 6U 1 2 x 19 265 9 223 7 242 1 255 8 205 7 190 5 203 7 228 6 6U 3 4 x 19 265 9 336 0 242 1 255 8 318 0 190 5 316 0 228 6 6U 1 1 x 19 265 9 448 3 242 1 255 8 430 3 190 5 428...

Страница 34: ...ce Cut out dimensions mm A 1 B 1 C D 6U 1 2 x 19 210 1 254 3 4 0 10 0 12 5 6U 3 4 x 19 322 4 254 3 4 0 10 0 12 5 6U 1 1 x 19 434 7 254 3 4 0 10 0 12 5 E 188 6 mm without rear protection cover 229 6 mm...

Страница 35: ...05 V1 EN Figure 8 Panel cut out dimensions for side by side flush mounting Case size mm Tolerance A 1 B 1 C 1 D 1 E 1 F 1 G 1 6U 1 2 x 19 214 0 259 3 240 4 190 5 34 4 13 2 6 4 diam 6U 3 4 x 19 326 4 2...

Страница 36: ...9 4 272 8 390 0 243 0 6U 1 1 x 19 516 0 491 1 272 8 390 0 243 0 5 3 Mounting methods and details 5 3 1 Mounting the IED The IED can be rack wall or flush mounted with the use of different mounting kit...

Страница 37: ...the ordering sheet in Accessories for 670 series IED see section Related documents IEC02000684 V1 EN Generally all the screws included in delivered mounting kits are of Torx type and a screwdriver of...

Страница 38: ...for class IP54 protection Flush mounting cannot be used for side by side mounted IEDs when IP54 class must be fulfilled Only IP20 class can be obtained when mounting two cases side by side in one 1 c...

Страница 39: ...ty Type 1 Sealing strip used to obtain IP54 class The sealing strip is factory mounted between the case and front plate 2 Fastener 4 3 Groove 4 Screw self tapping 4 2 9x9 5 mm 5 Joining point of seali...

Страница 40: ...crews Repeat the procedure with the remaining two fasteners 5 3 3 19 panel rack mounting 5 3 3 1 Overview All IED sizes can be mounted in a standard 19 cubicle rack by using the for each size suited m...

Страница 41: ...hich can be mounted either to the left or right side of the case 2 2 Screw 8 M4x6 Procedure 1 Carefully fasten the mounting angles 1a 1b to the sides of the IED Use the screws 2 supplied in the mounti...

Страница 42: ...PCBs inside the IED If fiber cables are bent too much the signal can be weakened Wall mounting is therefore not recommended for communication modules with fiber connection Serial SPA IEC 60870 5 103 D...

Страница 43: ...plasterboard walls or threading metal sheet wall 2 Make all electrical connections to the IED terminal It is much easier to do this without the unit in place 3 Mount the side plates to the IED 4 Mount...

Страница 44: ...protection 5 3 5 Side by side 19 rack mounting 5 3 5 1 Overview IED case sizes 1 2 x 19 or 3 4 x 19 and RHGS cases can be mounted side by side up to a maximum size of 19 For side by side rack mounting...

Страница 45: ...g plate Use the remaining four screws 5 Carefully fasten the mounting angles 4 to the sides of the IED Use the screws available in the mounting kit 6 Place the IED assembly in the rack 7 Fasten the mo...

Страница 46: ...e mounting details kit and the 19 panel rack mounting kit must be used The mounting kit has to be ordered separately The maximum size of the panel cut out is 19 With side by side flush mounting instal...

Страница 47: ...6 4 Mounting angle 2 Procedure 1 Make a panel cut out For panel cut out dimension see section Side by side flush mounting dimensions 2 Carefully press the sealing strip around the IED collar Cut the e...

Страница 48: ...7 Mounting the injection unit REX060 The injection unit REX060 case size is 6U 1 2 x 19 REX060 can be rack wall or flush mounted in the same way as the IED See the particular mounting instructions fo...

Страница 49: ...ator in order to limit the exposure of the field circuit Alternatively it can be located in the excitation cubicle 5 3 8 2 Shunt resistor unit REX062 X1 IEC11000038 1 en vsd IEC11000038 V1 EN Figure 2...

Страница 50: ...the electrical connection to REG670 5 4 1 IED connectors 5 4 1 1 Overview The quantity and designation of connectors depend upon the type and size of the IED The rear cover plates are prepared with s...

Страница 51: ...alog inputs Analog digital conversion module ADM Slot mounted PCB with A D conversion Table 2 Application specific modules Module Description Binary input module BIM Module with 16 optically isolated...

Страница 52: ...connector 2 Ethernet cable with RJ45 connectors The cable between PC and the IED serial communication port shall be a crossed over Ethernet cable with RJ45 connectors If the connection are made via a...

Страница 53: ...70 1 2 PG V1 EN Module Rear Positions PSM X11 BIM BOM SOM IOM or MIM X31 and X32 etc to X51 and X52 SLM X301 A B C D LDCM IRIG B or RS485 X302 LDCM or RS485 X303 OEM X311 A B C D LDCM RS485 or GTM X31...

Страница 54: ...Module Rear Positions PSM X11 BIM BOM SOM IOM or MIM X31 and X32 etc to X101 and X102 SLM X301 A B C D LDCM IRIG B or RS485 X302 LDCM or RS485 X303 OEM X311 A B C D LDCM RS485 or GTM X312 X313 TRM X40...

Страница 55: ...Positions PSM X11 BIM BOM SOM IOM or MIM X31 and X32 etc to X71 and X72 SLM X301 A B C D LDCM IRIG B or RS485 X302 LDCM or RS485 X303 OEM X311 A B C D LDCM RS485 or GTM X312 X313 X322 X323 TRM 1 X401...

Страница 56: ...Module Rear Positions PSM X11 BIM BOM SOM IOM or MIM X31 and X32 etc to X161 and X162 SLM X301 A B C D LDCM IRIG B or RS485 X302 LDCM or RS485 X303 OEM X311 A B C D LDCM RS485 or GTM X312 X313 TRM X40...

Страница 57: ...C D LDCM IRIG B or RS485 X302 LDCM or RS485 X303 OEM X311 A B C D LDCM RS485 or GTM X312 X313 X322 X323 TRM 1 X401 TRM 2 X411 1MRK002801 AC 10 670 1 2 PG V1 EN Figure 23 Transformer input module TRM...

Страница 58: ...220 V 3I 5A 4I 1A 5U 5A 5A 5A 1A 1A 1A 1A 110 220 V 110 220 V 110 220 V 110 220 V 110 220 V 3IM 1A 4IP 1A 5U 1AM 1AM 1AM 1A 1A 1A 1A 110 220 V 110 220 V 110 220 V 110 220 V 110 220 V 3IM 5A 4IP 5A 5U...

Страница 59: ...tacts named XA corresponds to rear position X31 X41 and so on and input contacts named XB to rear position X32 X42 and so on 1MRK002801 AC 15 670 1 2 PG V1 EN Figure 25 mA input module MIM 1MRK 502 02...

Страница 60: ...1 EN Figure 26 IED with basic functionality and communication interfaces 1MRK002801 AC 7 670 1 2 PG V1 EN Figure 27 Power supply module PSM Section 5 1MRK 502 029 UEN A Installing the IED 54 Installat...

Страница 61: ...cts named XA corresponds to rear position X31 X41 and so on and output contacts named XB to rear position X32 X42 and so on 1MRK002801 AC 13 670 1 2 PG V1 EN Figure 29 Static output module SOM 1MRK 50...

Страница 62: ...o any maintenance ONLY if the primary object protected with this equipment is de energized If required by national law or standard enclose the plate with resistors with a protective cover or in a sepa...

Страница 63: ...insure that only one earthing point exist in such scheme 2 Three phase plate with setting resistors and metrosils 3 Necessary connection for three phase metrosil set Shown connections are applicable f...

Страница 64: ...lock outputs AI1 AI2 and AI3 shall be connected to three instances of 1Ph high impedance differential protection HZPDIF function blocks for example instance 1 2 and 3 of HZPDIF in the configuration to...

Страница 65: ...default value ToObject 8 Connection made in the Signal Matrix which connects this current input to first input channel of the preprocessing function block 10 For high impedance differential protectio...

Страница 66: ...connection of these modules 5 4 3 Connecting the power supply module The wiring from the cubicle terminal block to the IED terminals see figure 27 for PSM connection diagram must be made in accordanc...

Страница 67: ...customers choice Table 8 CT and VT circuit connectors Connector type Rated voltage and current Maximum conductor area Screw compression type 250 V AC 20 A 4 mm2 AWG12 2 x 2 5 mm2 2 x AWG14 Terminal b...

Страница 68: ...me terminal the maximum permissible cross section area is 0 2 1 mm2 AWG 24 18 If two conductors each with area 1 5 mm2 AWG 16 need to be connected to the same terminal a ferrule must be used see figur...

Страница 69: ...pace when ring lug terminal is ordered for Binary I O connections one blank slot is necessary between two adjacent IO cards Please refer to the ordering particulars for details 5 4 6 Making the screen...

Страница 70: ...190 V1 EN Figure 37 Communication cable installation PosNo Description 1 Outer shield 2 Protective earth screw 3 Inner shield Inner shielding of the cable shall be earthed at the external equipment en...

Страница 71: ...t REX060 coupling capacitor unit REX061 and shunt resistor unit REX062 5 5 1 1 Injection unit REX060 1MRK002501 BA 2 PG V1 EN Figure 38 Designation for REX060 unit casing 1MRK002501 BA 3 PG V1 EN Figu...

Страница 72: ...K002501 BA 4 PG V1 EN Figure 40 Stator injection module 1MRK002501 BA 5 PG V1 EN Figure 41 Rotor injection module Section 5 1MRK 502 029 UEN A Installing the IED 66 Installation and commissioning manu...

Страница 73: ...REX061 1MRK002551 BA 1 PG V1 EN Figure 42 Designation for capacitor unit casing 1MRK002551 BA 2 PG V1 EN Figure 43 Coupling capacitor module 1MRK 502 029 UEN A Section 5 Installing the IED 67 Install...

Страница 74: ...EX062 1MRK002556 BA 1 PG V1 EN Figure 44 Designation for shunt resistor unit casing 1MRK002556 BA 2 PG V1 EN Figure 45 Shunt resistor module Section 5 1MRK 502 029 UEN A Installing the IED 68 Installa...

Страница 75: ...e same cubicle if used in the application Cable length between REX060 and generator should preferable not exceed 75 m in any case not exceed 150 m The recommended cable area for distances up to 75 m i...

Страница 76: ...1 en IEC11000236 V1 EN Figure 48 Stator connection example without REX062 For connection details regarding REX060 REX061 and REX062 refer to REG670 Technical Reference manual section Connection diagr...

Страница 77: ...cked NC binary out 6 Voltage Current Saturation NO binary out 7 Common binary out 8 Voltage A analog out 9 Voltage B analog out 10 Current A analog out 11 Current B analog out 12 Voltage sense A 13 Vo...

Страница 78: ...3 Voltage sense B 14 Current sense A same as 16 15 Current sense B 16 Current sense A same as 14 17 18 Table 14 Rotor injection connection X82 No Signal 1 Injection same as 3 2 Injection inside shunt...

Страница 79: ...pression type with one 0 14 to 6 mm2 wire or with two 0 14 to 1 5 mm2 wires X2 connector Connect each signal connector terminal of screw compression type with one 0 5 to 2 5 mm2 wire or with two 0 5 t...

Страница 80: ...stator measurements 1 The same voltage input is used for both stator and rotor voltage measurement and another voltage input is used for both stator and rotor current measurement The REX060 outputs to...

Страница 81: ...e inputs are linked to a pre processor block in the Signal Matrix Tool This pre processor block must have the same cycle time 8 ms as the function blocks for STTIPHIZ and ROTIPHIZ The default paramete...

Страница 82: ...odule is used for LON communication Connectors are of ST type glass or HFBR Snap in plastic The optical fibers have Transmission Tx and Reception Rx connectors and they should be attached to the Tx an...

Страница 83: ...l X3 Angle bracket 1 2 4 5 6 3 1 2 en07000140 vsd IEC07000140 V1 EN Figure 51 The connection plate to the backplate with connectors and screws This figure also shows the pin numbering from the compone...

Страница 84: ...ted to the protective earth at the IED The inner and outer shieldings are connected to the protective earth at the external equipment Use insulating tape for the inner shield to prevent contact with t...

Страница 85: ...ment PC The outer shield shall be connected to Protective Earth PE in every cable end that is to PE at all IED terminals and to PE at External equipment PC The first IED will have only one cable end b...

Страница 86: ...pment PC The outer shield shall be connected to Protective Earth PE in every cable end that is to PE at all IED terminals and to PE at External equipment PC The first IED will have only one cable end...

Страница 87: ...IA standard RS 485 specifies the RS485 network An informative excerpt is given in section Installing the serial communication cable for RS485 SPA IEC 5 7 2 Installing the serial communication cable fo...

Страница 88: ...therwise c The RS485 chip can include built in isolation 2 3 Bus excitation and signal conveyance 2 3 1 Requirements a The RS485 specification requires the Signal A and Signal B wires b Each node also...

Страница 89: ...odule cable Type Twisted pair S STP Screened Screened Twisted Pair Shield Individual foil for each pair with overall copper braid Length Maximum 1200 m 3000 ft from one system earth to the next system...

Страница 90: ...ildings walls roofs and windows to avoid signal reflections If necessary protect the antenna from animals and birds which can affect signal strength Also protect the antenna against lightning Always p...

Страница 91: ...refer to section Rear side connectors Connection diagram for GTM is shown in figure 26 Make sure that the antenna cable is not charged when connected to the antenna or to the receiver Short circuit th...

Страница 92: ...86...

Страница 93: ...the supplied connection diagram Correct possible errors before continuing to test the circuitry Test the circuitry Polarity check VT circuit voltage measurement primary injection test Earthing check P...

Страница 94: ...nce is within specification and that there are no high resistance joints in the CT winding or wiring CT excitation test in order to confirm that the current transformer is of the correct accuracy rati...

Страница 95: ...pecifications 6 5 2 Binary output circuits Preferably disconnect the binary output connector from the binary output cards Check all connected signals so that both load and polarity are in accordance w...

Страница 96: ...90...

Страница 97: ...ays from energizing a whole cubicle to energizing a single IED The user should re configure the IED to activate the hardware modules in order to enable the self supervision function to detect possible...

Страница 98: ...green LED flashes an internal failure in the IED has been detected See section 3 3 Checking the self supervision function in this chapter to investigate the fault An example of the local HMI is shown...

Страница 99: ...ure 59 Medium size graphic HMI 1 Status indication LEDs 2 LCD 3 Indication LEDs 4 Label 5 Local Remote LEDs 6 RJ45 port 7 Communication indication LED 8 Keypad 1MRK 502 029 UEN A Section 7 Energizing...

Страница 100: ...e the Left and Right arrow buttons to move between the time and date values year month day hours minutes and seconds Use the Up and Down arrow buttons to change the value 3 Confirm the setting Press t...

Страница 101: ...OK No problem detected None ADC module Fail The AD conversion module has failed Contact your ABB representative for service CANP 9 BIM1 Fail IO module has failed Check that the IO module has been conf...

Страница 102: ...96...

Страница 103: ...have to be considered Direct point to point link between PCM600 and the IED front port The front port can be seen as a service port Indirect link via a station LAN or from remote via a network The phy...

Страница 104: ...rkstation for point to point access to IEDs front port A special cable is needed to connect two physical Ethernet interfaces together without a hub router bridge or switch in between The Tx and Rx sig...

Страница 105: ...tatus window IEC09000356 1 en vsd IEC09000356 V1 EN Figure 62 Right click Local Area Connection and select Properties 3 Select the TCP IP protocol from the list of configured components using this con...

Страница 106: ...t to be obtained automatically by the IED see Figure 64 The IP address must be different from the IP address chosen for the IED IEC09000658 1 en vsd IEC09000658 V1 EN Figure 64 Select Use the followin...

Страница 107: ...he IED via a network This task depends on the used LAN WAN network PC and IED must belong to the same subnetwork 1MRK 502 029 UEN A Section 8 Set up the PCM600 communication link per IED 101 Installat...

Страница 108: ...102...

Страница 109: ...commissioning time After the commissioning is complete the configuration data is always stored to FLASH so that is not an issue But other things like objects states and the Local Remote switch positi...

Страница 110: ...operator s manual is structured in a similar way to the local HMI and provides a detailed guide to the use of the local HMI including paths in the menu structure and brief explanations of most settin...

Страница 111: ...uts For main CTs with 2A rated secondary current it is recommended to connect the secondary wiring to the 1A input and to set the rated primary current to one half times its true value For example a C...

Страница 112: ...106...

Страница 113: ...s structure and validating capabilities During installation commissioning and calibration ICT performs various tests to verify that the installation is acceptable and the calibration successful Beside...

Страница 114: ...teps at calibration measurements The sequence of the calibration session follows a scheme shown in the tool Calibration sequence 1 The injection must be activated and the rotor must be left with no im...

Страница 115: ...the machine In the commissioning part of ICT this can be done For each operation state of interest a measurement is performed If the reference impedance differs from the first one calculated under th...

Страница 116: ...unit REX060 If the voltage and or current level s frequencies are not reasonable or the ICT indicates other warnings abnormalities in the function status field verify that the HW connections are prop...

Страница 117: ...he second calibration sub tab Step2 Calibration step 2 Stability region indicator bar IEC11000047 1 en vsd GUID 3C7F0567 2367 46E4 9606 FCFC7408DAA0 V1 EN Figure 68 ICT calibration tab 1 including the...

Страница 118: ...indicated during one or more check s follow the instructions tips provided by the ICT in the Calibration result field 12 2 If these tips do not solve the issue then contact ABB Support IEC11000221 1...

Страница 119: ...start select the Commissioning tab 3 In the Reference impedance selection drop down menu select Reference 2 4 To start reading the measurements click the Start reading from IED button in the ICT tool...

Страница 120: ...tion After the calibration is performed it is appropriate to verify that known faults are measured as expected and that the function is indicating trips and alarms when it should in other words that t...

Страница 121: ...is relatively small You should be able to measure approximately 10k here If you choose to view fault conductance the measurement corresponds to approximately 1 10 4 Mho 7 Apply another known fault say...

Страница 122: ...w each report 3 View reports in one of the following ways In the short cut menu right click and select View report Click the View report button in the upper right corner of the auditing screen Double...

Страница 123: ...in graph You can do the following operations on the graph during calibration commissioning and monitoring Zoom in Zoom out Cancel zoom Enable X zooming Enable Y zooming 1 Zoom in one of the following...

Страница 124: ...toring tab it is also possible to log quantities to a file tabbed text file that can be viewed in the graph Besides this voltage levels measured by the function and also error codes are logged This fi...

Страница 125: ...s started if needed 5 The logging can be stopped by selecting the Stop button 6 You can open the file in notepad or MS Excel 1MRK 502 029 UEN A Section 10 Calibrating injection based sensitive rotor e...

Страница 126: ...120...

Страница 127: ...ucture and validating capabilities During installation commissioning and calibration ICT performs various tests to verify that the installation is acceptable and the calibration successful Besides car...

Страница 128: ...alid for any other principles of injection with LV neutral point resistor connected via DT or injection via open delta connected VT group on the generator terminal etc Uinj RN Cstat Uinj RN Cstat Uinj...

Страница 129: ...lt from the beginning or other problems due to the installation or calibration procedure Now the reference impedance is derived for one operational state It might be necessary to make measurements to...

Страница 130: ...here change of reference impedance is required Auditing In the auditing part calibration and commissioning reports are made 11 3 Launching injection commissioning tool ICT 1 To launch the Injection co...

Страница 131: ...injection frequency on the REX060 HMI for that function IEC11000045 1 en vsd Frequency found by the function Voltage and current signal staus and TRIP indication Ffunction status field Errors and abno...

Страница 132: ...Once again wait until the stability criteria is fulfilled then select the Submit button ICT automatically shifts to the third calibration tab Step3 Calibration step 3 9 Remove the known fault resistan...

Страница 133: ...roper impedance reference requires logic outside the injection function Therefore changing switching impedance reference is not described here but in a separate application note 1MRG005030 Application...

Страница 134: ...observing the standard deviation of the measured impedance the commissioning engineer can decide if the impedance of the generator is stable settled and also if the average impedance is based on enoug...

Страница 135: ...start continuously plotting values on the graph with one second interval select Start readings from IED By default the measured absolute impedance is plotted however there are several items that can b...

Страница 136: ...nitoring Besides measuring the fault size a trip indication is required when a large fault is measured to prevent that a damage to the generator occurs To allow the specific function to issue a trip i...

Страница 137: ...ete report button in the upper right corner of the auditing screen Select a record with the mouse cursor then press the Delete key on the keyboard 5 Generate logs in one of the following ways In the s...

Страница 138: ...u IEC11000051 1 en vsd GUID 3F080E48 8B77 48A0 8283 89511E1AE50B V1 EN Figure 83 Zooming via the shortcut menu Use the mouse to zoom in and select a part of the graph area IEC11000052 1 en vsd GUID 26...

Страница 139: ...gged This file can then be imported to other tools for deeper analysis when needed The logger feature is available on the lower right corner of the Monitoring tab Note that the logger is independent o...

Страница 140: ...134...

Страница 141: ...using the SPA protocol the rear SPA IEC port must be set for SPA use Procedure 1 Set the operation of the rear optical SPA IEC port to SPA The operation of the rear SPA port can be found on the local...

Страница 142: ...n SLM configuration Rear optical SPA IEC DNP port IEC60870 5 103 Set the same slave number and baud rate as set in the IEC master system for the IED 12 2 Verifying the communication To verify that the...

Страница 143: ...e event is presented in the IEC master system During the following tests of the different functions in the IED verify that the events and indications in the IEC master system are as expected 12 3 Fibr...

Страница 144: ...be required 12 4 Optical budget calculation for serial communication with SPA IEC Table 21 Example Distance 1 km Glass Distance 25 m Plastic Maximum attenuation 11 dB 7 dB 4 dB km multi mode 820 nm 62...

Страница 145: ...ally used in substation automation systems Optical fiber is used within the substation as the physical communication link The test can only be carried out when the whole communication system is instal...

Страница 146: ...ctors Glass fibre Plastic fibre Cable connector ST connector snap in connector Cable diameter 62 5 125 m 1 mm Max cable length 1000 m 10 m Wavelength 820 900 nm 660 nm Transmitted power 13 dBm HFBR 14...

Страница 147: ...sferred to LNT via the local HMI by setting the parameter ServicePinMsg Yes The node address is sent to LNT via the LON bus or LNT can scan the network for new nodes The communication speed of the LON...

Страница 148: ...are identification number in hexadecimal code Location 0 6 No value Location of the node Can be viewed in the local HMI Path in the local HMI under Main menu Settings General settings Communication SL...

Страница 149: ...plastic 620 nm 1mm 3 dB Margins for installation aging and so on 5 dB 2 dB Losses in connection box two contacts 0 75 dB contact 1 5 dB Losses in connection box two contacts 1dB contact 2 dB Margin fo...

Страница 150: ...144...

Страница 151: ...communication the corresponding OEM ports must be activated The rear OEM port AB and CD is used for IEC 61850 8 1 communication For IEC 61850 8 1 redundant communication both OEM port AB and CD are u...

Страница 152: ...up to the transport layer The best way to verify the communication up to the application layer is to use a protocol analyzer for example an Ethereal that is connected to the substation bus and monitor...

Страница 153: ...especially for the configuration of all the binary inputs and outputs Therefore before testing check that the available terminal diagram corresponds to the IED The technical reference manual contains...

Страница 154: ...racy for both of them Please consider the configured logic from the function block to the output contacts when measuring the operate time 15 2 Preparing for test 15 2 1 Preparing the IED to verify set...

Страница 155: ...nly modes with a high probability of coming into operation need to be checked when commissioned to verify the configuration and settings 15 2 2 Preparing the connection to the test equipment The IED c...

Страница 156: ...estMode menu and press E The TestMode menu is found on the local HMI under Main menu Test IED test mode TestMode 2 Use the up and down arrows to choose On and press E 3 Press the left arrow to exit th...

Страница 157: ...voltage and current at rated value 2 Compare the injected value with the measured values The voltage and current phasor menu in the local HMI is located under Main menu Measurements Analog primary val...

Страница 158: ...that the logical status of the BLOCK input signal is equal to 0 for the function to be tested Event function blocks can also be individually blocked to ensure that no events are reported to a remote s...

Страница 159: ...A Manual Trig can be started at any time This results in a recording of the actual values from all recorded channels The Manual Trig can be initiated in two ways 1 From the local HMI under Main menu...

Страница 160: ...from the event recorder and event list can be viewed on the local HMI or after upload in PCM600 as follows 1 on the local HMI under Main menu Events or in more details via 2 the Event Viewer in PCM600...

Страница 161: ...MI underMain menu Test Function status Setting groups ActiveGroup 3 Connect the appropriate dc voltage to the corresponding binary input of the IED and observe the information presented on the local H...

Страница 162: ...and note the operate value 8 Connect the timer and set the current to twice the operate value 9 Switch on the current and note the operate time 10 Check in the same way the functioning of the measuri...

Страница 163: ...ctor group Yd and so on the single phase injection current may appear as differential current in one or two phases and the operating value of the injected single phase current will be different 6 Chec...

Страница 164: ...e time 7 Connect the test set to terminal L1 and neutral of the three phase current input configured to REFPDIF Also inject a current higher than half the Idmin setting in the neutral to earth circuit...

Страница 165: ...eset value The reset value must be high for this function 5 Check the operating time by injecting a voltage corresponding to 1 2 U Trip level Make note of the measured trip time 6 If required verify t...

Страница 166: ...characteristics Keep the current as close as possible to its rated value or lower But make sure it is higher than the set minimum operating current Ensure that the maximum continuous current in an IED...

Страница 167: ...ZAngPP ZPP sin ZAngPP 2 ZPP 2 R ZPP 2 1 cos ZAngPP ZPP 2 sin ZAngPP 3 ZPP 2 R ZPP 2 1 cos ZAngPP ZPP 2 sin ZAngPP Change the magnitude and angle of phase to phase voltage to achieve impedances at tes...

Страница 168: ...st points Set Comments 1 ZPE cos ZAngPE ZPE sin ZAngPE 2 ZPE 2 R ZPE 2 1 cos ZAngPE ZPE 2 sin ZAngPE 3 ZPE 2 R ZPE 2 1 cos ZAngPE ZPE 2 sin ZAngPE Check also in the same way as for phase to earth faul...

Страница 169: ...itude and angle is changed to a value ZC 2 This is done with a speed so that the final impedance is reached after 1 second As the injected voltage is lower than 0 92 UBase the START signal should be a...

Страница 170: ...edance movement Zone 2 Zone 1 WarnAngle TripAngle f ZC IEC07000099_2_en vsd IEC07000099 V2 EN Figure 90 Setting of the pole slip protection PSPPPAM Section 15 1MRK 502 029 UEN A Verifying settings by...

Страница 171: ...they were changed for testing purposes 15 5 3 Loss of excitation LEXPDIS Prepare the IED for verification of settings outlined in section Overview and section Preparing for test in this chapter 15 5...

Страница 172: ...tZ2 4 Switch the current infeed injection off The function shall reset Turn the current on with the values corresponding to Test 3 and measure the time to activation of signal TRZ2 This time shall be...

Страница 173: ...e setting to Off Restore connections and settings to their original values if they were changed for testing purposes 15 6 Current protection 15 6 1 Instantaneous phase overcurrent protection PHPIOC Pr...

Страница 174: ...1 2 Completing the test Continue to test another function or end the test by changing the Test mode setting to Off Restore connections and settings to their original values if they were changed for te...

Страница 175: ...voltage by an angle equal to 260 equal to 80 180 4 Increase the injected current and note the operated value of the tested step of the function 5 Decrease the current slowly and note the reset value...

Страница 176: ...rrent value of the IED 15 6 3 1 Measuring the operate limit of set values 1 Inject a phase current into the IED with an initial value below that of the setting 2 Increase the injected current in the L...

Страница 177: ...reset value 5 If the test has been performed by injection of current in phase L1 repeat the test when injecting current into terminals L2 and L3 with a polarizing voltage connected to terminals L2 res...

Страница 178: ...ivated Check under NS4PTOC function Service Values that correct I2 magnitude is measured by the function 3 Set the injected negative sequence polarizing voltage slightly larger than the set minimum po...

Страница 179: ...idual overcurrent and power protection SDEPSDE Prepare the IED for verification of settings outlined in section Overview and section Preparing for test in this chapter Figure 93 shows the principal co...

Страница 180: ...pare the result with the set value Take the set characteristic into consideration see figure 94 and figure 95 5 Measure the operate time of the timer by injecting a current two times the set INcosPhi...

Страница 181: ...2_en vsd o 0 RCADir 0 3I j 0 3 j I cos 0 3 ref U U IEC06000650 V2 EN Figure 94 Characteristic with ROADir restriction 1MRK 502 029 UEN A Section 15 Verifying settings by secondary injection 175 Instal...

Страница 182: ...directional element Note that for operation both the injected current and voltage must be greater than the set values INRel and UNRel respectively The function activates the START and STDIRIN outputs...

Страница 183: ...oth the injected current and voltage must be greater than the set values INRel and UNRel respectively The function activates the START and STDIRIN output 3 Measure with angles j around RCADir ROADir 4...

Страница 184: ...Continue to test another function or complete the test by setting the test mode to Off Residual overvoltage release and protection Procedure 1 Measure that the operate voltage is equal to the UN setti...

Страница 185: ...for phases L2 and L3 5 Activate the digital input for cooling input signal to switch over to base current IBase2 6 Check for all three phases the operate and reset values for IBase2 in the same way as...

Страница 186: ...iew and section Preparing for test in this chapter The Breaker failure protection function CCRBRF should normally be tested in conjunction with some other function that provides a start signal An exte...

Страница 187: ...1 Apply the fault condition including start of CCRBRF well above the set current value Measure time from START of CCRBRF 2 Check the re trip t1 and back up trip times t2 and t3 In applicable cases the...

Страница 188: ...ained 6 Disconnect AC and START input signals 15 6 8 5 Verifying the back up trip mode In the cases below it is assumed that FunctionMode Current is selected Checking that back up tripping is not achi...

Страница 189: ...hase currents with equal phase angle I0 component below IP but of such value that the residual earth fault current 3I0 will be above set value IN 5 Verify that back up trip is not achieved 6 Disconnec...

Страница 190: ...ld not influence 3 Apply the fault condition including start of CCRBRF with current above the set IP value 4 Check that the re trip if selected and back up trip commands are achieved 5 Disconnect inje...

Страница 191: ...time with the set value tTrip 3 Reset the EXTPDIND input 4 Activate the BLKDBYAR binary input This test should be performed together with Autorecloser SMBRREC 5 Activate the EXTPDIND binary input No...

Страница 192: ...values if they were changed for testing purposes 15 6 10 Directional underpower protection GUPPDUP Prepare the IED for verification of settings outlined in section Overview and section Preparing for t...

Страница 193: ...values in of IBase and UBase converted to secondary current and voltage The angle between the injected current and voltage shall be set equal to the set direction Angle1 angle for stage 1 equal to 0...

Страница 194: ...nt voltage test set is available the test set should be connected to a selected input for one phase current and voltage 2 Adjust the injected current and voltage to the set rated values in of IBase an...

Страница 195: ...rrents is calculated correctly by the function See example below for 1 A rated current transformer 4 Inject pure negative sequence current that is phase currents with exactly same magnitude reversed s...

Страница 196: ...and TRIP signals operates at time equal to 250 sec tolerance 10 Repeat the above described tests for the step 2 of the function excluding the inverse time testing 11 Finally check that start and trip...

Страница 197: ...d in the event menu 9 Inject rated symmetric three phase voltage to the IED 10 Set the injected current to 200 of the operate level of the tested stage switch on the current The function does not star...

Страница 198: ...t mode setting to Off Restore connections and settings to their original values if they were changed for testing purposes 15 7 2 Two step overvoltage protection OV2PTOV Prepare the IED for verificatio...

Страница 199: ...eir original values if they were changed for testing purposes 15 7 4 Overexcitation protection OEXPVPH Prepare the IED for verification of settings outlined in section Overview and section Preparing f...

Страница 200: ...o the setting plan and check another point on the inverse time curve injecting a voltage 1 3 V Hz 14 Finally check that START and TRIP information is stored in the event menu 15 7 4 2 Completing the t...

Страница 201: ...t until the START signal resets 4 Check U1 blocking level by comparing the voltage level at reset with the set undervoltage blocking U1Low 5 Repeat steps 2 to 4 to check U1Low for the other phases The...

Страница 202: ...to one phase of the U2 inputs according to figure 98 The voltage differential START signal is set 3 Decrease slowly the voltage in phase UL3 of the test set until the START signal resets 4 Check U2 b...

Страница 203: ...timer tAlarm 4 Check the alarm operation level by comparing the differential voltage level at ALARM with the set alarm level UDAlarm 5 Continue to slowly decrease the voltage until START signal is act...

Страница 204: ...oltageDiff PTOV 60 VDCPTOV x The IED voltage inputs should be connected to the VTs according to valid connection diagram 2 Record the differential voltages 3 Calculate the compensation factor RFLx for...

Страница 205: ...etween the voltages 180 Check the monitored values of the following analogue signals E3 the magnitude of the third harmonic induced voltage in the stator U3N 5 V the magnitude of the third harmonic vo...

Страница 206: ...the generator and ANGLE the angle between the third harmonic voltage phasors U3N and U3T The value of E3 should be close to the following value 2 2 3N 3T 3T E3 U U cos ANGLE U sin ANGLE EQUATION2076...

Страница 207: ...the set value 5 Increase the frequency until rated operating levels are reached 6 Check that the START signal resets 7 Instantaneously decrease the frequency of the applied voltage to a value about 2...

Страница 208: ...upply the IED with three phase voltages at their rated values 3 Slowly increase the frequency of the applied voltage until the START signal appears 4 Note the operate value and compare it with the set...

Страница 209: ...lue and the definite time delay Set StartFreqGrad to a rather small negative value 2 Supply the IED with three phase voltages at their rated values 3 Slowly decrease the frequency of the applied volta...

Страница 210: ...nce quantities negative sequence quantities maximum quantity from the three phase group minimum quantity from the three phase group difference between maximum and minimum quantities unbalance can be d...

Страница 211: ...rrent equal to 110 of the operate current at tMin 8 Check that TRIP and START contacts operate according to the configuration logic 9 Release the blocking of the high set stage and check the operate a...

Страница 212: ...polarizing voltage according to the I cos F law setting parameter DirPrincOC1 or DirPrincOC2 set to I cos F This has to be known if a more detailed measurement of the directional characteristic is ma...

Страница 213: ...VGAPC Prepare the IED for verification of settings as outlined in section Overview and section Preparing for test in this chapter 15 9 2 1 Testing The protection function uses injection of an ac volta...

Страница 214: ...e with the generator at stand still situations Procedure 1 The test should be prepared with a switch connected between the output of RXTTE4 221 and the station earth Initially this switch is open 2 Fi...

Страница 215: ...Prepare the IED for verification of settings outlined in section Overview and section Preparing for test in this chapter The Current circuit supervision function CCSRDIF is conveniently tested with t...

Страница 216: ...ppear with almost no time delay No signals BLKZ and 3PH should appear on the IED Only the distance protection function can operate Undervoltage dependent functions must not operate 3 Disconnect the dc...

Страница 217: ...and UL3 EQUATION708 V1 EN the measured phase voltages a 1 e j 2 p 3 0 5 j 3 2 EQUATION709 V1 EN 4 Compare the result with the set value consider that the set value 3U2 is in percentage of the base vol...

Страница 218: ...at the same time 3PH should appear after 5 seconds if the remaining voltage levels are lower than the set UDLD of the DLD function 4 Apply normal conditions as in step 3 The BLKU BLKZ and 3PH signals...

Страница 219: ...st procedures below describe the settings which can be used as references during testing before the final settings are specified After testing restore the equipment to the normal or desired settings A...

Страница 220: ...voltage connected to the line side U Bus1 U Line1 N Test equipment IED U3PBB1 N IEC05000481 3 en vsd N UMeasure Ph N Ph Ph U Bus2 U Line2 U3PBB2 U3PLN2 U3PLN1 IEC05000481 V3 EN Figure 103 General test...

Страница 221: ...100 UBaseBus and f bus 50 25 Hz 3 2 Verify that the function does not operate when frequency difference is above limit 4 Repeat with different frequency differences for example 100 mHz with f bus nomi...

Страница 222: ...ifferences PhaseDiffM and PhaseDiffA respectively are set to their final settings and the test should verify that operation is achieved when the phase angle difference is lower than this value both le...

Страница 223: ...de the set limits for manual and auto synchronizing check respectively 1 Apply voltages U Line equal to 100 UBaseLine and U Bus equal to 100 UBaseBus with a frequency difference equal to 0 mHz and a p...

Страница 224: ...n the U Bus This corresponds to the energizing of a dead line to a live bus 1 Apply a single phase voltage 100 UBaseBus to the U Bus and a single phase voltage 30 UBaseLine to the U Line 2 Check that...

Страница 225: ...ual to 30 UBase The outputs should not be activated 6 Repeat the test with ManEnerg set to DLLB with different values on the U Bus and the U Line voltage 15 11 1 4 Testing the voltage selection Testin...

Страница 226: ...pparatus control function consists of four types of function blocks which are connected in a delivery specific way between bays and to the station level For that reason test the total function in a sy...

Страница 227: ...t protection and so on within the IED It is recommended that the function is tested together with the autorecloser function when built into the IED or when a separate external unit is used for reclosi...

Страница 228: ...h fault No other outputs should be active 4 Initiate a single phase to earth fault and switch it off immediately when the trip signal is issued for the corresponding phase Initiate the same fault once...

Страница 229: ...ive 5 Initiate a single phase to earth fault and switch it off immediately when the trip signal is issued for the corresponding phase Initiate the same fault once again within the reclaim time of the...

Страница 230: ...ock Onand repeat Beside the TRIP outputs CLLKOUT should be set 8 Reset the lockout signal by shortly thereafter activating the reset lockout RSTLKOUT signal 9 Activate the trip signal lockout function...

Страница 231: ...The pulse counter value is then checked in PCM600 or on the local HMI 15 15 Station communication 15 15 1 Multiple command and transmit MultiCmd MultiTransm The multiple command and transmit function...

Страница 232: ...puts as well as self supervision status are available from the local HMI under Self supervision status Main menu Diagnostics Internal events Status for inputs and outputs Main menu Test Function statu...

Страница 233: ...IEC07000188 V1 EN Figure 105 Test of RTC with I O 1MRK 502 029 UEN A Section 15 Verifying settings by secondary injection 227 Installation and commissioning manual...

Страница 234: ...228...

Страница 235: ...ssary to know the flow of the load current import or export i e forward or reverse by help of the indication from an external instrument energy meter or SCADA information The design of the test proced...

Страница 236: ...s in the reverse direction importing there will be shown L1Dir reverse L2Dir reverse L3Dir reverse Compare this result with the information given by the external equipment it must be the same If the d...

Страница 237: ...higher than 3 of the nominal current of the line L1R L1X L2R L2X L3R L3X The measured impedance information can still be used to determine the direction of the load A positive resistance measured in...

Страница 238: ...232...

Страница 239: ...and their integral components have been subject to extensive laboratory testing during the development and design work Prior to series production of a specific IED it is type tested according to nati...

Страница 240: ...tional functions have information about the measured direction and for example measured impedance These values must be checked and verified as correct with the export or import of power available Fina...

Страница 241: ...tests To be made after the first half year of service then with the cycle as proposed above and after any suspected maloperation or change of the IED setting Testing of protection IEDs shall preferabl...

Страница 242: ...ary injection from a portable test set Each protection shall be tested according to the secondary injection test information for the specific protection IED Only the setting values adopted shall be ch...

Страница 243: ...tripping output terminals in the cubicle When the terminal is opened an alarm shall be achieved on the signal system after a delay of some seconds However remember to close the circuit directly after...

Страница 244: ...d to operate There is however little point in testing healthy equipment and then putting it back into service with an open terminal with a removed fuse or open miniature circuit breaker with an open c...

Страница 245: ...signals are active INT NUMFAIL INT LMDERROR INT WATCHDOG INT APPERROR INT RTEERROR INT FTFERROR or any of the HW dependent signals INT Warning OFF ON This signal will be active if one or more of the...

Страница 246: ...signal will be active if the IEC61850 stack did not succeed in some actions like reading IEC61850 configuration startup etc LMD READY FAIL LON network interface MIP DPS is in an unrecoverable error s...

Страница 247: ...ackage The PC can be connected either to the port at the front or at the rear of the IED These events are logged as internal events Table 32 Events available for the internal event list in the IED Eve...

Страница 248: ...e the transformer and may cause injuries to humans Never connect or disconnect a wire and or a connector to or from a IED during normal service Hazardous voltages and currents are present that may be...

Страница 249: ...ail are connected to the corresponding metallic area on the circuit board when the new module is inserted 10 Reassemble the IED If the IED has been calibrated with the system inputs the calibration pr...

Страница 250: ...244...

Страница 251: ...Setting parameter ZD ASCT Auxiliary summation current transformer ASD Adaptive signal detection AWG American Wire Gauge standard BBP Busbar protection BFP Breaker failure protection BI Binary input BI...

Страница 252: ...ntra directional Way of transmitting G 703 over a balanced line Involves four twisted pairs two of which are used for transmitting data in both directions and two for transmitting clock signals CPU Ce...

Страница 253: ...515 Access multiplexer FOX 6Plus Compact time division multiplexer for the transmission of up to seven duplex channels of digital data over optical fibers G 703 Electrical and functional description...

Страница 254: ...cial Interest Group for the electrical EMF Electromotive force IED Intelligent electronic device I GIS Intelligent gas insulated switchgear IOM Binary input output module Instance When several occurre...

Страница 255: ...serial bus originally developed for use in trains NCC National Control Centre NUM Numerical module OCO cycle Open close open cycle OCP Overcurrent protection OEM Optical ethernet module OLTC On load...

Страница 256: ...balanced serial interface for the transmission of digital data in point to point connections RS485 Serial link according to EIA standard RS485 RTC Real time clock RTU Remote terminal unit SA Substati...

Страница 257: ...nt of Defense protocol suite based upon these including Telnet FTP UDP and RDP TEF Time delayed earth fault protection function TNC connector Threaded Neill Concelman a threaded constant impedance ver...

Страница 258: ...s also sometimes known by the military name Zulu time Zulu in the phonetic alphabet stands for Z which stands for longitude zero UV Undervoltage WEI Weak end infeed logic VT Voltage transformer X 21 A...

Страница 259: ...253...

Страница 260: ...ct us ABB AB Substation Automation Products SE 721 59 V ster s Sweden Phone 46 0 21 32 50 00 Fax 46 0 21 14 69 18 www abb com substationautomation 1MRK 502 029 UEN A Copyright 2011 ABB All rights rese...

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