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ABB REB670 Commissioning Manual

Manual is about: Relion 670 Series Busbar protection

Summary of REB670

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    Relion® 670 series — busbar protection reb670 version 2.2 iec commissioning manual.

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    Document id: 1mrk 505 372-uen issued: october 2017 revision: a product version: 2.2.1 © copyright 2017 abb. All rights reserved.

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    Copyright this document and parts thereof must not be reproduced or copied without written permission from abb, and the contents thereof must not be imparted to a third party, nor used for any unauthorized purpose. The software and hardware described in this document is furnished under a license and...

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    Disclaimer the data, examples and diagrams in this manual are included solely for the concept or product description and are not to be deemed as a statement of guaranteed properties. All persons responsible for applying the equipment addressed in this manual must satisfy themselves that each intende...

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    Conformity this product complies with the directive of the council of the european communities on the approximation of the laws of the member states relating to electromagnetic compatibility (emc directive 2004/108/ec) and concerning electrical equipment for use within specified voltage limits (low-...

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    Table of contents section 1 introduction.......................................................................9 this manual........................................................................................ 9 intended audience.......................................................................

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    Checking optical connections........................................................... 52 section 5 configuring the ied and changing settings....................53 overview...........................................................................................53 configuring analog ct inputs........

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    How to enable forcing..................................................................74 enable forcing by using lhmi................................................ 74 enable forcing using testmode function block...................75 how to change binary input/output signals using forcing............

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    Thermal overload protection, two time constants trpttr ........95 checking operate and reset values........................................95 completing the test................................................................ 96 breaker failure protection, phase segregated activation and output ccrb...

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    Voltage differential protection vdcptov .................................116 check of undervoltage levels............................................... 116 check of voltage differential trip and alarm levels................118 check of trip and trip reset timers........................................

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    Synchrocheck, energizing check, and synchronizing sesrsyn................................................................................. 133 testing the synchronizing function....................................... 135 testing the synchrocheck functionality.................................136 test...

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    Remote communication..................................................................157 binary signal transfer.................................................................157 basic ied functions........................................................................ 158 parameter setting group...

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    8.

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    Section 1 introduction 1.1 this manual guid-ab423a30-13c2-46af-b7fe-a73bb425eb5f v18 the commissioning manual contains instructions on how to commission the ied. The manual can also be used by system engineers and maintenance personnel for assistance during the testing phase. The manual provides pro...

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    1.3 product documentation 1.3.1 product documentation set guid-3aa69ea6-f1d8-47c6-a8e6-562f29c67172 v15 iec07000220-4-en.Vsd p la nn in g & p ur ch as e e ng in ee rin g in st al lin g c om m is si on in g o pe ra tio n m ai nt en an ce d ec om m is si on in g d ei ns ta lli ng & d is po sa l applic...

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    Describes the process of testing an ied in a substation which is not in service. The chapters are organized in the chronological order in which the ied should be commissioned. The relevant procedures may be followed also during the service and maintenance activities. The operation manual contains in...

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    1.3.3 related documents guid-94e8a5ca-be1b-45af-81e7-5a41d34ee112 v5 documents related to reb670 document numbers application manual 1mrk 505 370-uen commissioning manual 1mrk 505 372-uen product guide 1mrk 505 373-ben technical manual 1mrk 505 371-uen type test certificate 1mrk 505 373-ten 670 seri...

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    The caution hot surface icon indicates important information or warning about the temperature of product surfaces. Class 1 laser product. Take adequate measures to protect the eyes and do not view directly with optical instruments. The caution icon indicates important information or warning related ...

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    • the character ^ in front of an input/output signal name indicates that the signal name may be customized using the pcm600 software. • the character * after an input signal name indicates that the signal must be connected to another function block in the application configuration to achieve a valid...

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    Function block name edition 1 logical nodes edition 2 logical nodes bfptrc_f01 bfptrc bfptrc bfptrc_f02 bfptrc bfptrc bfptrc_f03 bfptrc bfptrc bfptrc_f04 bfptrc bfptrc bfptrc_f05 bfptrc bfptrc bfptrc_f06 bfptrc bfptrc bfptrc_f07 bfptrc bfptrc bfptrc_f08 bfptrc bfptrc bfptrc_f09 bfptrc bfptrc bfptrc_...

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    Function block name edition 1 logical nodes edition 2 logical nodes busptrc_b8 busptrc busptrc busptrc_b9 busptrc busptrc busptrc_b10 busptrc busptrc busptrc_b11 busptrc busptrc busptrc_b12 busptrc busptrc busptrc_b13 busptrc busptrc busptrc_b14 busptrc busptrc busptrc_b15 busptrc busptrc busptrc_b1...

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    Function block name edition 1 logical nodes edition 2 logical nodes bzntpdif_a bzntpdif bzatgapc bzatpdif bzntgapc bzntpdif bzntpdif_b bzntpdif bzbtgapc bzbtpdif bzntgapc bzntpdif cbpgapc cbplln0 cbpmmxu cbpptrc holptov hph1ptov ph3ptuc ph3ptoc rp3pdop cbpmmxu cbpptrc holptov hph1ptov ph3ptoc ph3ptu...

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    Function block name edition 1 logical nodes edition 2 logical nodes efpioc efpioc efpioc efrwpioc efrwpioc efrwpioc etpmmtr etpmmtr etpmmtr fdpspdis fdpspdis fdpspdis fmpspdis fmpspdis fmpspdis frpspdis fpsrpdis fpsrpdis ftaqfvr ftaqfvr ftaqfvr fufspvc sddrfuf fufspvc sddspvc genpdif genpdif gengapc...

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    Function block name edition 1 logical nodes edition 2 logical nodes lczsptov lczsptov lczsptov ld0lln0 lln0 - ldlpsch ldlpdif ldlpsch ldrgfc stsggio ldrgfc lexpdis lexpdis lexpdis lexptrc lfpttr lfpttr lfpttr lmbrflo lmbrflo lmbrflo lolsptr lolsptr lolsptr lovptuv lovptuv lovptuv lphd lphd lpttr lpt...

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    Function block name edition 1 logical nodes edition 2 logical nodes pslpsch zmrpsl pslpsch pspppam pspppam pspppam pspptrc qcbay qcbay bay/lln0 qcrsv qcrsv qcrsv rchlcch rchlcch rchlcch refpdif refpdif refpdif rotiphiz rotiphiz rotiphiz rotiptrc rov2ptov gen2lln0 ph1ptrc rov2ptov ph1ptrc rov2ptov sa...

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    Function block name edition 1 logical nodes edition 2 logical nodes t2wpdif t2wpdif t2wgapc t2wpdif t2wphar t2wptrc t3wpdif t3wpdif t3wgapc t3wpdif t3wphar t3wptrc tclyltc tclyltc tclyltc tcsltc tcmyltc tcmyltc tcmyltc teigapc teiggio teigapc teiggio teilgapc teilggio teilgapc tmagapc tmaggio tmagap...

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    Function block name edition 1 logical nodes edition 2 logical nodes zmcapdis zmcapdis zmcapdis zmcpdis zmcpdis zmcpdis zmfcpdis zmfclln0 psfpdis zmfpdis zmfptrc zmmmxu psfpdis zmfpdis zmfptrc zmmmxu zmfpdis zmflln0 psfpdis zmfpdis zmfptrc zmmmxu psfpdis psfpdis zmfpdis zmfptrc zmmmxu zmhpdis zmhpdis...

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    Section 2 safety information 2.1 symbols on the product guid-e48f2ec3-6ab8-4ecf-a77e-f16ce45ca5fd v2 all warnings must be observed. Read the entire manual before doing installation or any maintenance work on the product. All warnings must be observed. Class 1 laser product. Take adequate measures to...

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    M2364-2 v1 always use suitable isolated test pins when measuring signals in open circuitry. Potentially lethal voltages and currents are present. M2370-2 v1 never connect or disconnect a wire and/or a connector to or from a ied during normal operation. Hazardous voltages and currents are present tha...

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    2.3 caution signs ip1503-1 v1 guid-5d1412b8-8f9d-4d39-b6d1-60fb35797fd0 v1 whenever changes are made in the ied, measures should be taken to avoid inadvertent tripping. Guid-f2a7bd77-80fb-48f0-aae5-be73de520cc2 v1 the ied contains components which are sensitive to electrostatic discharge. Esd precau...

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    26.

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    Section 3 available functions guid-f5776dd1-bd04-4872-bb89-a0412b4b5cc3 v1 the following tables list all the functions available in the ied. Those functions that are not exposed to the user or do not need to be configured are not described in this manual. 3.1 main protection functions guid-66baad98-...

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    Iec 61850 or function name ansi function description busbar reb670 (customized) reb670 (a20) reb670 (a31) reb670 (b20) reb670 (b21) reb670 (b31) busptrc, bczspdif, bznspdif, bzisggio, bussm24 87b busbar differential protection, 2 zones, single phase/24 bays 1 1 bdzsgapc, bfptrc, bicptrc, bznpdif, bc...

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    Iec 61850 or function name ansi function description busbar reb670 (customized) reb670 (a20) reb670 (a31) reb670 (b20) reb670 (b21) reb670 (b31) ccsrbrf 50bf breaker failure protection, single phase version 0-24 12- c12 12- c12 24- c13 guppdup 37 directional underpower protection 0-4 goppdop 32 dire...

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    3.3 control and monitoring functions guid-e3777f16-0b76-4157-a3bf-0b6b978863de v15 iec 61850 or function name ansi function description busbar reb670 (customized) reb670 (a20) reb670 (a31) reb670 (b20) reb670 (b21) reb670 (b31) control sesrsyn 25 synchrocheck, energizing check and synchronizing 0-3 ...

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    Iec 61850 or function name ansi function description busbar reb670 (customized) reb670 (a20) reb670 (a31) reb670 (b20) reb670 (b21) reb670 (b31) i103poscmdv ied direct commands with position for iec 60870-5-103 50 50 50 50 50 50 i103iedcmd ied commands for iec 60870-5-103 1 1 1 1 1 1 i103usrcmd func...

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    Iec 61850 or function name ansi function description busbar reb670 (customized) reb670 (a20) reb670 (a31) reb670 (b20) reb670 (b21) reb670 (b31) itbgapc integer to boolean 16 conversion with logic node representation 16 16 16 16 16 16 teigapc elapsed time integrator with limit transgression and over...

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    Table 4: number of function instances in apc30 function name function description total number of instances scilo interlocking 30 bb_es 6 a1a2_bs 4 a1a2_dc 6 abc_bc 2 bh_conn 2 bh_line_a 2 bh_line_b 2 db_bus_a 3 db_bus_b 3 db_line 3 abc_line 6 ab_trafo 4 scswi switch controller 30 sxswi circuit swit...

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    Table 6: total number of instances for extended logic package extended configurable logic block total number of instances and 180 gate 49 inv 180 lld 49 or 180 pulsetimer 89 rsmemory 40 slgapc 74 srmemory 130 timerset 109 vsgapc 120 xor 89 iec 61850 or function name ansi function description busbar ...

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    Iec 61850 or function name ansi function description busbar reb670 (customized) reb670 (a20) reb670 (a31) reb670 (b20) reb670 (b21) reb670 (b31) mvgapc generic communication function for measured values 24 24 24 24 24 24 binstatrep logical signal status report 3 3 3 3 3 3 range_xp measured value exp...

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    3.4 communication guid-5f144b53-b9a7-4173-80cf-cd4c84579cb5 v15 iec 61850 or function name ansi function description busbar reb670 (customized) reb670 (a20) reb670 (a31) reb670 (b20) reb670 (b21) reb670 (b31) station communication lonspa, spa spa communication protocol 1 1 1 1 1 1 ade lon communicat...

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    Iec 61850 or function name ansi function description busbar reb670 (customized) reb670 (a20) reb670 (a31) reb670 (b20) reb670 (b21) reb670 (b31) optical103 iec 60870-5-103 optical serial communication 1 1 1 1 1 1 rs485103 iec 60870-5-103 serial communication for rs485 1 1 1 1 1 1 agsal generic secur...

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    Iec 61850 or function name ansi function description busbar reb670 (customized) reb670 (a20) reb670 (a31) reb670 (b20) reb670 (b21) reb670 (b31) binsigrec1_12m binsigrec1_22m binsigtran1_12m binsigtran1_22m binary signal transfer, 2mbit receive/transmit 3 3 3 3 3 3 ldcmtrn transmission of analog dat...

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    Iec 61850 or function name description smbo signal matrix for binary outputs smmi signal matrix for ma inputs smai1 - smai12 signal matrix for analog inputs 3phsum summation block 3 phase athstat authority status athchck authority check authman authority management ftpaccs ftp access with password g...

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    Section 4 starting up 4.1 factory and site acceptance testing guid-38c2b5fa-9210-4d85-ba21-39ce98a1a84a v2 testing the proper ied operation is carried out at different occasions, for example: • acceptance testing • commissioning testing • maintenance testing this manual describes the workflow and th...

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    • three-phase test kit or other test equipment depending on the complexity of the configuration and functions to be tested. • pc with pcm600 installed along with the connectivity packages corresponding to the ieds to be tested. • administration rights on the pc, to set up ip addresses • product docu...

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    To ensure that the ied is according to the delivery and ordering specifications documents delivered together with each ied, the user should also after start-up use the built in hmi to check the ied's: • software version, main menu/diagnostics/ied status/product identifiers . • serial number, main me...

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    To connect pcm600 to the ied, two basic variants must be considered. • direct point-to-point link between pcm600 and the ied front port. The front port can be seen as a service port. • a link via a station lan or from remote via a network. The physical connection and the ip address must be configure...

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    Iec13000057-1-en.Vsd iec13000057 v1 en-us figure 3: select: search programs and files 2. Type view network connections and click on the view network connections icon. 1mrk 505 372-uen a section 4 starting up busbar protection reb670 2.2 iec 45 commissioning manual.

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    Iec13000058-1-en.Vsd iec13000058 v1 en-us figure 4: click view network connections 3. Right-click and select properties . Iec13000059-1-en.Vsd iec13000059 v1 en-us figure 5: right-click local area connection and select properties 4. Select the tcp/ipv4 protocol from the list of configured components...

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    Iec13000060-1-en.Vsd iec13000060 v1 en-us figure 6: select the tcp/ipv4 protocol and open properties 5. Select use the following ip address and define ip address and subnet mask if the front port is used and if the ip address is not set to be obtained automatically by the ied, see figure 7 . The ip ...

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    Iec13000062-1-en.Vsd iec13000062 v1 en-us figure 7: select: use the following ip address 6. Use the ping command to verify connectivity with the ied. 7. Close all open windows and start pcm600. The pc and ied must belong to the same subnetwork for this set- up to work. Setting up the pc to access th...

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    When the configuration is written and completed, the ied is automatically set into normal mode. For further instructions please refer to the users manuals for pcm600. 4.7 checking ct circuits m12182-2 v15 check that the wiring is in strict accordance with the supplied connection diagram. The cts mus...

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    If the ct secondary circuit earth connection is removed without the current transformer primary being de-energized, dangerous voltages may result in the secondary ct circuits. 4.8 checking vt circuits m11724-2 v10 check that the wiring is in strict accordance with the supplied connection diagram. Co...

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    Not until the test handle is completely removed, the trip and alarm circuits are restored for operation. Verify that the contact sockets have been crimped correctly and that they are fully inserted by tugging on the wires. Never do this with current circuits in service. Current circuit 1. Verify tha...

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    4.11 checking optical connections m16022-2 v7 check that the tx and rx optical connections are correct. An ied equipped with optical connections has an minimum space requirement of 180 mm for plastic fiber cables and 275 mm for glass fiber cables. Check the allowed minimum bending radius from the op...

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    Section 5 configuring the ied and changing settings 5.1 overview m11730-2 v6 the customer specific values for each setting parameter and a configuration file have to be available before the ied can be set and configured, if the ied is not delivered with a configuration. Use the configuration tools i...

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    5.2 configuring analog ct inputs m12312-6 v8 the analog input channels must be configured to get correct measurement results as well as correct protection functionality. Because all protection algorithms in the ied utilize the primary system quantities, it is extremely important to make sure that co...

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    Each logical i/o module has an error flag that indicates signal or module failure. The error flag is also set when the physical i/o module of the correct type is not detected in the connected slot. 1mrk 505 372-uen a section 5 configuring the ied and changing settings busbar protection reb670 2.2 ie...

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    56.

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    Section 6 establishing connection and verifying the spa/iec communication 6.1 entering settings m11735-2 v2 if the ied is connected to a monitoring or control system via the rear spa/iec103 port, the spa/iec103 port has to be set either for spa or iec103 use. 6.1.1 entering spa settings m11735-7 v5 ...

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    1. Set the port for iec use on the local hmi under main menu / configuration /communication /station communication/port configuration/slm optical serial port/protocol:1 . When the communication protocol is selected, the ied is automatically restarted, and the port then operates as an iec port. 2. Se...

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    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. 6.3 fibre optic loop m11905-3 v6 the spa communication is mainly used for sms. It can include different numerical ieds with remote communication possibil...

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    Section 7 establishing connection and verifying the lon communication 7.1 communication via the rear ports m12196-2 v1 7.1.1 lon communication m12196-4 v5 lon communication is normally used in substation automation systems. Optical fiber is used within the substation as the physical communication li...

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    The fibre optic lon bus is implemented using either glass core or plastic core fibre optic cables. Table 12: specification of the fibre optic connectors 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 82...

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    • the node addresses of the other connected ieds. • the network variable selectors to be used. This is organized by lnt. The node address is transferred 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 networ...

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    Table 15: ade non group settings (basic) name values (range) unit step default description operation off on - - off operation timerclass slow normal fast - - slow timer class lon commands are available on the local hmi under main menu/configuration/ communication/station communication/port configura...

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    Section 8 establishing connection and verifying the iec 61850 communication 8.1 overview semod172103-4 v8 the rear optical ethernet ports are used for: • process bus (iec/uca 61850-9-2le) communication • substation bus (iec 61850-8-1) communication 8.2 setting the station communication semod172108-3...

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    8.3 verifying the communication semod172108-24 v10 to verify that the communication is working a test/analyzing tool, for example itt600, can be used. Verifying redundant iec 61850-8-1 communication ensure that the ied receives iec 61850-8-1 data on the selected ethernet ports. Browse in the local h...

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    Section 9 testing ied operation 9.1 preparing for test ip336-1 v1 9.1.1 requirements m11740-2 v9 ied test requirements: • calculated settings • application configuration diagram • signal matrix (smt) configuration • terminal connection diagram • technical manual • three-phase test equipment • proces...

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    Prepare the ied for test before testing a particular function. Consider the logic diagram of the tested protection function when performing the test. All included functions in the ied are tested according to the corresponding test instructions in this chapter. The functions can be tested in any orde...

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    9.1.2 preparing the ied to verify settings m11741-2 v11 if a test switch is included, start preparation by making the necessary connections to the test switch. This means connecting the test equipment according to a specific and designated ied terminal diagram. Put the ied into the test mode to faci...

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    9.2 activating the test mode m11412-2 v14 put the ied into the test mode before testing. The test mode blocks all protection functions and some of the control functions in the ied, and the individual functions to be tested can be unblocked to prevent unwanted operation caused by other functions. In ...

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    This position, all voltages and currents are restored and any re-energizing transients are given a chance to decay before the trip circuits are restored. When the latches are released, the handle can be completely withdrawn from the test switch, restoring the trip circuits to the protection ied. If ...

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    Il1 il2 il3 in ul1 ul2 ul3 un il1 il2 il3 ul1 in (i4,i5) trip l1 trip l2 trip l3 t es t e qu ip m en t ie d iec09000652-1-en.Vsd ul2 ul3 un un (u4,u5) iec 61850 iec09000652 v1 en-us figure 9: connection example of the test equipment to the ied when test equipment is connected to the transformer inpu...

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    Active. All functions that were blocked or released in a previous test mode session, that is, the parameter test mode is set to on , are reset when a new test mode session is started. Procedure 1. Click the function test modes menu. The function test modes menu is located in the local hmi under main...

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    9.7 testing the protection functionality guid-125b6f28-d3e5-4535-9cd6-6c056b79f496 v2 each protection function must be tested individually by secondary injection. • verify operating levels (trip) and timers. • verify alarm and blocking signals. • use the disturbance handling tool in pcm600 to evalua...

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    Iec15000029 v1 en-us 2. Exit back to the root menu. 3. Select yes in the save dialogue box. Once the ied is in test mode the yellow start led starts to blink. 9.8.2.2 enable forcing using testmode function block guid-dd17b7d6-516f-4561-9d30-906b968eafe0 v1 • use the testmode function block, appropri...

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    Iec15000021 v1 en-us figure 10: value line of the desired signal 3. Use the up/down arrows on the lhmi to change the signal value or the appropriate menu in pcm600. The status of the signal changes automatically to forced (i.E. There is no need to set the status to forced manually). On the lhmi, the...

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    Appear “frozen” at the value selected by the user, even if the ied is switched off and back on again. Freezing a signal value without changing it guid-fd76aac1-7098-47d3-a3a1-6acdf509ed91 v1 • set the status of a signal to forced, in the forcing menu that corresponds to the i/o card in question. See...

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    Iec15000023 v1 en-us 4. Click start editing signal value for forcing on the tool bar. Iec15000024 v1 en-us the signal monitoring menu changes and indicates the forcing values that can be edited. Iec15000025 v1 en-us 5. Select and edit the values. 6. Click acknowledge and send . Iec15000026 v1 en-us ...

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    Iec15000032 v1 en-us regardless if the forcing changes are commited or canceled, the forcing is still active. To force more signals, click the button start editing signal value for forcing again. 9.8.4 how to undo forcing changes and return the ied to normal operation guid-00e2bad8-a29e-4b9d-80e6-e1...

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    1. Uncheck forcing session under the menu ied . Iec15000031 v1 en-us 2. Click yes in the confirmation dialogue box. Pcm600 will revert all forced signals back to unforced and the real signal values will immediately take effect again. This may change both binary input values and output relay states a...

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    Section 10 testing functionality by secondary injection 10.1 testing disturbance report 10.1.1 introduction m17101-2 v6 the following sub-functions are included in the disturbance report function: • disturbance recorder • event list • event recorder • trip value recorder • indications if the disturb...

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    A new recording begins. The view is updated if you leave the menu and return. 1.2. Navigate to general information or to trip values to obtain more detailed information. 2. Open the disturbance handling tool for the ied in the plant structure in pcm600. 2.1. Right-click and select execute manual tri...

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    When the ied is brought into normal service it is recommended to delete all events resulting from commissioning tests to avoid confusion in future fault analysis. All events in the ied can be cleared in the local hmi under main menu//clear/clear internal event list or main menu/clear/clear process e...

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    If the reb670 is not provided with a test switch, the ied has to be tested in the proper way from external circuit terminals. Make sure that the instrument transformers are isolated from the circuits connected to the test set. The secondary phase terminals of the current transformers must be short-c...

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    Follow the following test instructions to test the operation of the differential protection function for the current input ctx: 1. Connect the test set for injection of three-phase current (or if not available one-phase current) to the current terminals of ctx input of reb670 terminal. 2. Check and ...

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    17. Make sure the current from this current input is included into both measuring zones za and zb simultaneously. Check the value for the configuration parameter zonesel of the ctx, and • energize both the binary inputs ctrlza and ctrlzb , if the value of zonesel is ctrlincludes , • de-energize both...

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    Follow the following test instructions to perform the stability test: 1. Connect the currents i1 and i2 from the three-phase test set to the current terminals of ct1 and ctx inputs of the ied as shown in figure 13 . 2. Make sure that current measurement from ct1 and ctx inputs are included into the ...

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    1. Connect the currents i1 and i2 from the three-phase test set test set to the current terminals of ct1 and ctx inputs of the ied as shown in figure 13 . 2. Make sure that the current measurement from ct1 and ctx inputs are included into the same differential zone (see the previous test instruction...

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    1. Connect the currents i1 and i2 from the three-phase test set test set to the current terminals of ct1 and ctx inputs of the ied as shown in figure 13 . 2. Make sure that the current measurement from ct1 and ctx inputs are included into the same differential zone (see the previous test instruction...

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    Check that the circuit breakers associated with the ied protection scheme operate when the tripping outputs from the ieds are activated. The trip outputs from the ieds are conveniently activated by secondary injection to activate a suitable protection function. Alternatively forcing of binary output...

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    3.1. Set the injected polarizing voltage larger than the set minimum polarizing voltage (default is 5% of ubase ) and set the injection current to lag the appropriate voltage by an angle of about 80° if forward directional function is selected. If 1 out of 3 currents are chosen for operation: the vo...

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    10.4.2.1 verifying the settings semod128616-59 v3 procedure 1. Connect the test set for appropriate current injection to the appropriate ied terminals. If there is any configuration logic, which is used to enable or block any of 4 available overcurrent steps, make sure that step under test is enable...

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    1. Connect the test set for single current injection to the appropriate ied terminals. Connect the injection current to terminals l1 and neutral. 2. Set the injected polarizing voltage slightly larger than the set minimum polarizing voltage (5% of ur) and set the injection current to lag the voltage...

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    10.4.4 four step negative sequence overcurrent protection ns4ptoc guid-eb1a8dfd-5bac-4024-ada2-d9be7a2b50a0 v2 prepare the ied for verification of settings as outlined in section "preparing for test" in this chapter. Guid-f7aa2194-4d1c-4475-8853-c7d064912614 v4 when inverse time overcurrent characte...

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    10.4.4.1 completing the test semod53296-122 v4 continue to test another function or end the test by changing the testmode setting to off . Restore connections and settings to their original values, if they were changed for testing purposes. 10.4.5 thermal overload protection, two time constants trpt...

  • Page 102

    13. Switch off the injection current and check from the service menu readings of thermal status and lockout that the lockout resets at the set percentage of heat content. 14. Activate the cooling input signal to switch over to base current ibase2 . Wait 5 minutes to empty the thermal memory and set ...

  • Page 103

    If no cbpos check or retrip off is set, only back-up trip can be used to check set ip> . 10.4.6.2 checking the residual (earth fault) current operate value in> set below ip> m12104-80 v9 check the low set in> current where setting functionmode = current and setting butripmode = 1 out of 4 1. Apply t...

  • Page 104

    1. Set retripmode = cb pos check . 2. Apply the fault condition, including start of ccrbrf, well above the set current value. 3. Verify that re-trip is achieved after set time t1 and back-up trip after time t2 . 4. Apply the fault condition, including the start of ccrbrf, with the current below the ...

  • Page 105

    Checking the case butripmode = 2 out of 4 m12104-179 v7 the earth-fault current setting in> may be equal to or below phase-current setting ip> . 1. Set butripmode = 2 out of 4 . 2. Apply the fault condition, including start of ccrbrf, with one-phase current above set ip> and residual (earth fault) a...

  • Page 106

    Checking the case with fault current below set value i>blkcont m12104-281 v10 it simulates a case where the fault current is very low and operation will depend on cb position signal from cb auxiliary contact. It is suggested that re-trip without current check is used, setting retripmode = no cbpos c...

  • Page 107

    • calculated settings • valid configuration diagram for the ied • valid terminal diagram for the ied • technical reference manual • single phase test equipment the technical reference manual contains application and functionality summaries, function blocks, logic diagrams, input and output signals, ...

  • Page 108

    1. Apply the fault condition, including start of ccsrbrf, well above the set current value. Measure time from “start of ccsrbrf”. 2. Check the re-trip t1 and back-up trip times t2 and t3 3. Disconnect ac and start input signals. 10.4.7.3 verifying the re-trip mode semod128582-67 v2 choose the mode b...

  • Page 109

    10.4.7.4 verifying the back-up trip mode semod128582-115 v2 in the cases below it is assumed that functionmode = current is selected. Checking that back-up tripping is not achieved at normal cb tripping semod128582-119 v4 use the actual tripping modes. The case below applies to re-trip with current ...

  • Page 110

    6. Apply input signal(s), for start of ccsrbrf. The value of current could be low. 7. Arrange disconnection of cb closed signal(s) well before set back-up trip time t2 . 8. Verify that back-up trip is not achieved. 9. Disconnect injected ac and start input signals. 10.4.7.7 verifying the function mo...

  • Page 111

    6. Apply the fault and the start again. The value of current should be below the set value i>blkcont 7. Arrange disconnection of bc closed signal well before set back-up trip time t2 .Arrange disconnection of bc closed signals well before set back-up trip time t2 . It simulates a correct cb tripping...

  • Page 112

    Table 18: calculation modes set value: mode formula used for complex power calculation l1, l2, l3 * * * 1 1 2 2 3 3 l l l l l l s u i u i u i = × + × + × equation1697 v1 en-us (equation 4) arone * * 1 2 1 2 3 3 l l l l l l s u i u i = × - × equation1698 v1 en-us (equation 5) posseq * 3 posseq posseq...

  • Page 113

    5. Increase the current to 100% of ibase . 6. Switch the current off and measure the time for activation of trip1, trip of stage 1. 7. If a second stage is used, repeat steps 2 to 6 for the second stage. 10.4.8.2 completing the test semod175027-15 v4 continue to test another function or end the test...

  • Page 114

    10.4.9.2 completing the test semod175058-66 v4 continue to test another function or end the test by changing the testmode setting to off . Restore connections and settings to their original values, if they were changed for testing purposes. 10.4.10 capacitor bank protection cbpgapc guid-00163d04-eba...

  • Page 115

    Overcurrent feature guid-7e1a7532-7a45-4da2-a0f3-ce300f8a48bf v3 note that during testing the overcurrent feature the harmonic voltage overload feature or reactive power overload feature may also give start and operate signals depending on their actual settings. Therefore it is best to switch them o...

  • Page 116

    6. Check that service value from the function for current in phase l1, on the local hmi under main menu/test is approximately 185a (that is, 0.370a · (500/1) = 185a). 7. Stop injection of all currents (that is, set all currents back to 0a). 8. Check that all above mentioned function binary output si...

  • Page 117

    The following formula can be used to calculate scb reactive power in per-unit system when current with different frequency from the rated frequency is injected. [ ] [ ] 2 rated injected f q pu i pu f = × equation2273 v1 en-us (equation 13) harmonic voltage overload feature guid-3c6b2c73-026d-4173-bd...

  • Page 118

    7. Stop injection of all currents (that is, set all currents back to 0a). 8. Check that all above mentioned function binary output signals now have logical value zero. 9. Repeat above steps 1 - 8 for phase l2 and phase l3. 10. Repeat above steps 1 - 8 to test different points from the above table. O...

  • Page 119

    Verification of start value and time delay to operate for step 1 m13796-29 v10 1. Check that the ied settings are appropriate, especially the start value, the definite time delay and the 1 out of 3 operation mode. 2. Supply the ied with three-phase voltages at their rated values. 3. Slowly decrease ...

  • Page 120

    For example, if the measured voltage jumps from the rated value to 0.8 times the set start voltage level and time multiplier k1 is set to 0.05 s (default value), then the tr1 and trip signals operate at a time equal to 0.250 s ± tolerance. 10. The test above can be repeated to check the inverse time...

  • Page 121

    5. Set and apply about 20% higher voltage than the measured operate value for one phase. 6. Measure the time delay for the tr1 signal and compare it with the set value. 7. Check the inverse time delay by injecting a voltage corresponding to 1.2 × u1>. 8. Repeat the test to check the inverse time cha...

  • Page 122

    T s k u u ( ) = > − 1 1 1 iecequation2429 v1 en-us (equation 20) where: t(s) operate time in seconds k1 settable time multiplier of the function for step 1 u measured voltage u1> set start voltage for step 1 8. Repeat the test for step 2 of the function. 10.5.3.2 completing the test semod54358-38 v4...

  • Page 123

    Ul1 ul2 ul3 un ul1 ul1 ul2 ul3 ie d t e s t s e t ie d iec07000106-1-en.Vsd ul2 ul3 un 1 2 iec07000106 v2 en-us figure 14: connection of the test set to the ied for test of u1 block level where: 1 is three-phase voltage group1 (u1) 2 is three-phase voltage group2 (u2) 3. Decrease slowly the voltage ...

  • Page 124

    Ul1 ul2 ul3 un ul1 ul1 ul2 ul3 ie d t e s t s e t ie d iec07000107-1-en.Vsd ul2 ul3 un 1 2 iec07000107 v2 en-us figure 15: connection of the test set to the ied for test of u2 block level where: 1 is three-phase voltage group1 (u1) 2 is three-phase voltage group2 (u2) 2. Apply voltage higher than th...

  • Page 125

    Ul1 ul2 ul3 un ul1 ul1 ul2 ul3 ie d t e s t s e t ie d iec07000108-1-en.Vsd ul2 ul3 un 1 2 iec07000108 v2 en-us figure 16: connection of the test set to the ied for test of alarm levels, trip levels and trip timer where: 1 is three-phase voltage group1 (u1) 2 is three-phase voltage group2 (u2) 2. Ap...

  • Page 126

    1. Connect voltages to the ied according to valid connection diagram and figure 16 . 2. Set ur (rated voltage) to the u1 inputs and increase u2 voltage until differential voltage is 1.5 · operating level ( udtrip ). 3. Switch on the test set. Measure the time from activation of the start signal unti...

  • Page 127

    1. Check that the input logical signals block, cbopen and vtsu are logical zero. 2. Supply a three-phase rated voltage in all three phases and note on the local hmi that the trip logical signal is equal to the logical 0. 3. Switch off the voltage in all three phases. After set ttrip time a trip sign...

  • Page 128

    1. Check that the ied settings are appropriate, for example the start value and the time delay. 2. Supply the ied with three-phase voltages at their rated values and initial frequency. The initial frequency is calculated using equation 21 . 0.02 / 0.04 0.04 r startfrequency floor f startfrequency ie...

  • Page 129

    10.6.1.2 completing the test m16289-57 v5 continue to test another function or end the test by changing the testmode setting to off . Restore connections and settings to their original values, if they were changed for testing purposes. 10.6.2 overfrequency protection saptof m16290-2 v7 prepare the i...

  • Page 130

    5. Slowly increase the frequency of the applied voltage, to a value above startfrequency . 6. Check that the start signal does not appear. 7. Wait for a time corresponding to tdelay , make sure that the trip signal does not appear. 10.6.2.2 completing the test m16290-52 v5 continue to test another f...

  • Page 131

    10.6.3.2 completing the test m16256-39 v4 continue to test another function or end the test by changing the testmode setting to off . Restore connections and settings to their original values, if they were changed for testing purposes. 10.7 multipurpose protection semod53552-1 v1 10.7.1 general curr...

  • Page 132

    6. Connect a trip output contact to the timer. 7. Set the current to 200% of the operate value of low set stage, switch on the current and check the time delay. For inverse time curves, check the operate time at a current equal to 110% of the operate current at tmin . 8. Check that trip and start co...

  • Page 133

    Ratio has to be calculated) is the actual pickup value as got with actual restraining from the voltage restraining quantity. 10.7.1.4 overcurrent feature with directionality semod56488-60 v5 please note that the directional characteristic can be set in two different ways either just dependent on the...

  • Page 134

    10.7.1.6 completing the test semod56488-99 v2 continue to test another function or end the test by changing the testmode setting to off . Restore connections and settings to their original values, if they were changed for testing purposes. 10.8 secondary system supervision semod53556-1 v1 10.8.1 fus...

  • Page 135

    • there should be no change in the high status of the output signals blku and blkz. • the signal 3ph will appear. 8. Establish normal voltage and current operating conditions simultaneously and observe the corresponding output signals. They should change to logical 0 as follows: • signal 3ph after a...

  • Page 136

    2 1 2 3 2 3 l l l i i a i a i × = + × + × iecequation00021 v1 en-us (equation 23) where: 1 2 3 l l l i i and i , iecequation00020 v1 en-us are the measured phase currents 2 3 3 1 0, 5 2 j a e j p × = × = - + . Iecequation00022 v2 en-us 7. Compare the result with the set value of the negative-sequenc...

  • Page 137

    Where: 1 2 3 l l l i i and i , iecequation00020 v1 en-us are the measured phase currents 7. Compare the result with the set value of the zero-sequence operate current. Consider that the set value 3i0 is in percentage of the base current ibase . 10.8.1.4 measuring the operate value for the dead line ...

  • Page 138

    5. Repeat step 2 . 6. Connect the nominal voltages in all three phases and feed a current below the operate level in all three phases. 7. Keep the current constant. Disconnect the voltage in all three phases simultaneously. The blku, blkz and 3ph signals should not appear. 8. Change the magnitude of...

  • Page 139

    Ud>mainblock or ud>pilotalarm . Mainfuf or pilotfuf signals are activated without any time delay. 3. Set normal conditions as mentioned in step 1. Mainfuf or pilotfuf signals should reset. 4. Set sealin to on , ud>mainblock to 20% of ubase and usealin to 70% of ubase . 5. Apply three-phase voltages ...

  • Page 140

    The tests explained in the test 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 secondary injection test set with the possibility to alter the pha...

  • Page 141

    U-bus1 u-line1 n test equipment ied u3pbb1 n iec05000481-5-en.Vsd n umeasure ph/n ph/ph u-bus2 u-line2 u3pbb2 u3pln2 u3pln1 n n input phase l1,l2,l3 l12,l23,l31 umeasure ph/n ph/ph input phase l1,l2,l3 l12,l23,l31 iec05000481 v5 en-us figure 18: general test connection for a 1½ breaker diameter with...

  • Page 143

    Testing the phase angle difference m2377-215 v8 the phase angle differences 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 leading and lagging. Test with no vol...

  • Page 144

    1. Apply voltages u-line equal to 100% gblbaseselline and u-bus equal to 100% gblbaseselbus , with a frequency difference equal to 0 mhz and a phase difference lower than the set value. 2. Check that the autosyok and mansyok outputs are activated. 3. Apply voltage to the u-line equal to 100% gblbase...

  • Page 145

    1. Apply a single-phase voltage 100% gblbaseselbus to the u-bus, and a single-phase voltage 30% gblbaseselline to the u-line. 2. Check that the autoenok and manenok outputs are activated after set tautoenerg respectively tmanenerg . 3. Increase the u-line to 60% gblbaseselline and u-bus to be equal ...

  • Page 146

    4. Check that the manenok output is activated after set tmanenerg . 5. Increase the u-bus to 80% gblbaseselbus and keep the u-line equal to 30% gblbaseselline . 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 voltag...

  • Page 147

    Selected by activation of different inputs in the voltage selection logic as shown in table 19 and figure 20 . Table 19: voltage selection logic sesrsyn cbconfig setting section to be synchroniz ed activated b1qcld input on ied from activated b2qcld input on ied from activated ln1qcld input on ied f...

  • Page 148

    Wa1 wa2 wa1_qa1 (sesrsyn 1) wa2_qa1 (sesrsyn 3) tie_qa1 (sesrsyn 2) line1 line2 line1_qb9 line2_qb9 iec11000274-3-en.Vsd iec11000274 v3 en-us figure 20: objects used in the voltage selection logic 10.9.1.5 completing the test m2377-1042 v5 continue to test another function or end the test by changin...

  • Page 149

    Settings intended for use are verified. If one chooses to reduce some time settings in order to speed up verification, be careful to set the auto recloser at intended operational values at the end of the verification procedure. One such parameter is the treclaim time that must be timed out before a ...

  • Page 150

    • a bi-stable relay (br) or two auxiliary relays to simulate a cb • two push-buttons (sc, st) to operate the br and a change-over switch (sry) to simulate cbready • possibly a switch simulation the synchronizing check sesrsyn condition ied closecb trip cbclosed cbready br sc st sry to test set + - i...

  • Page 151

    Possibly reset the counters to zero . Counters are reset in the reset menu. 4. Make arrangements for the simulation of the cb, for example as in figure 21 . 5. Make arrangements for indication, recording and time measurements. The signals for cbclosed, start, closecb, ready and other relevant signal...

  • Page 152

    Should the operation not be as expected, this should be investigated. It could be caused by an inappropriate setting or missing condition such as cbready . 6. Repeat the sequence by simulating a permanent fault. Shortly after the reclosing shot, a new fault is applied. If a single-shot auto reclosin...

  • Page 153

    1. Check that the auto recloser function is operative, for example by making an auto reclosing shot. Keep the cb simulator br closed. Remove the cbready signal by opening sry. 2. Apply a fault and thereby a start signal. 3. Check that no auto reclosing takes place. Checking the influence of synchroc...

  • Page 154

    Restoring equipment m12400-190 v6 after the tests, restore the equipment to normal or desired state. Check the following items in particular: 1. Check the operation counters. Reset the counters to zero, if that is the user's preference. The counter reset function is found on the local hmi under main...

  • Page 155

    Included in the operation of different built-in functions must be tested at the same time as their corresponding functions. 10.9.5 interlocking m11755-2 v8 prepare the ied for verification of settings outlined in section "preparing the ied to verify settings" . Values of the logical signals are avai...

  • Page 156

    4. Also, reduce further the pressure level input below preslolimit or activate the binary input signal senpreslo , check that preslo signal appears after a set time delay of tpressurelo . 5. Activate block binary input and check that the outputs presalm , preslo , alarm and lockout disappear. 6. Res...

  • Page 157

    10.10.2.1 testing the liquid medium supervision for level alarm and level lockout conditions guid-c1f1e6ca-9512-4358-a4e7-84cc3698d156 v3 1. Connect the binary inputs to consider liquid level to initiate the alarms. 2. Consider the analogue level input senlevel and set senlevel to a value lower than...

  • Page 158

    The signal monitoring tool in pcm600 shows the service values that are available on the local hmi as well. Values of the logical signals belong to the breaker monitoring are available on the local hmi under: main menu/test/function status/monitoring/ breakermonitoring/sscbr:x 10.10.3.1 verifying the...

  • Page 159

    6.1. Test the set timing defined by ratedopercurr , ratedfltcurr , opernorated , opernofault , dircoef , cblifealmlevel . 6.2. Vary the phase current in the selected phase from below rated operated current, ratedopercurr to above rated fault current, ratedfltcurr of a breaker. 6.3. The remaining lif...

  • Page 160

    10.10.3.2 completing the test guid-0a16206f-690e-46ef-86f4-5a89e0bf640b v3 1. Continue to test another function or end the test by changing the test mode setting to off . 2. Restore connections and settings to their original values if they were changed for testing purposes. 10.10.4 event function ev...

  • Page 161

    Necessary functionality. A known number of pulses with different frequencies are connected to the pulse counter input. The test should be performed with settings operation = on or operation = off and the function blocked or unblocked. The pulse counter value is then checked in pcm600 or on the local...

  • Page 162

    1. Repeat the above test steps 1 to 2. 2. Set tenergy setting as 1 minute and supply the ied with three-phase currents and voltages at their rated value till 1 minute. 3. Check the maxpafd and maxprfd outputs after 1 minute and compare it with last 1 minute average power values. 4. Increase either t...

  • Page 163

    System as an acceptance test (fat/sat) or as parts of that system, because the command function blocks are connected in a delivery-specific way between bays and the station level and transmit. Command and transmit function blocks included in the operation of different built- in functions must be tes...

  • Page 164

    Iec07000188 v1 en-us figure 22: test of rtc with i/o 10.14 basic ied functions semod52026-1 v1 10.14.1 parameter setting group handling setgrps m11369-2 v4 prepare the ied for verification of settings as outlined in section "preparing for test" in this chapter. 10.14.1.1 verifying the settings m1136...

  • Page 165

    10.14.1.2 completing the test m11369-39 v4 continue to test another function or end the test by changing the testmode setting to off . Restore connections and settings to their original values, if they were changed for testing purposes. 10.15 exit test mode semod53244-3 v5 the following procedure is...

  • Page 166

    160

  • Page 167

    Section 11 primary injection testing ip10812-1 v1 semod65857-3 v3 whenever it becomes necessary to work on primary equipment, it is essential that all the necessary switching, locking, earthing and safety procedures are observed and obeyed in a rigid and formalized manner. Operating and testing proc...

  • Page 168

    Follow the following test instructions for all used current inputs in an ied. Procedure 1. Connect the test set for injection primary current to the main ct connected to the current terminals of ctx input of the ied as shown in figure 23 . 2. Make sure that current measurement from the ctx input are...

  • Page 169

    Reb 670 ct3 current input ct1 current input ct2 current input ct4 current input ct5 current input primary injection test set iec13000228-1-en.Vsd iec05000307 v2 en-us figure 24: typical test connection for primary injection, which should confirm the stability of the main ct connected to current inpu...

  • Page 170

    Semod65855-5 v3 in busbar arrangements where a disconnector replica is used, it provides the information to the busbar protection about which of the measured ct currents shall be included within different differential zones. It is necessary to verify the auxiliary contacts from each busbar disconnec...

  • Page 171

    Section 12 commissioning and maintenance of the fault clearing system 12.1 commissioning tests semod56513-5 v4 during commissioning all protection functions shall be verified with the setting values used at each plant. The commissioning tests must include verification of all circuits by green-lining...

  • Page 172

    Every four to six years • periodic maintenance test for protection ieds of objects with redundant protection system. First maintenance test should always be carried out after the first half year of service. When protection ieds are combined with built-in control, the test interval can be increased d...

  • Page 173

    • test instructions for protection ieds to be tested • test records from previous commissioning and maintenance tests • list of valid settings • blank test records to fill in measured values 12.2.2.2 recording semod56528-14 v2 it is of utmost importance to carefully record the test results. Special ...

  • Page 174

    The circuit is not provided with a continuous trip-circuit supervision, it is possible to check that circuit is really closed when the test-plug handle has been removed by using a high-ohmic voltmeter and measuring between the plus and the trip output on the panel. The measurement is then done throu...

  • Page 175

    12.2.2.8 restoring semod56528-36 v2 maintenance is very important to improve the availability of the protection system by detecting failures before the protection is required to operate. There is however little point in testing healthy equipment and then putting it back into service with an open ter...

  • Page 176

    170

  • Page 177

    Section 13 troubleshooting 13.1 checking the self supervision signals ip1474-1 v1 13.1.1 checking the self supervision function ip1473-1 v1 13.1.1.1 determine the cause of an internal failure m11657-2 v1 this procedure describes how to navigate the menus in order to find the cause of an internal fai...

  • Page 178

    Indicated result possible reason proposed action adc-module ok no problem detected. None. Adc-module fail the ad conversion module has failed. Contact your abb representative for service. (protocol name) ready no problem detected. None. (protocol name) fail protocol has failed. (i/o module name) rea...

  • Page 179

    Hmi signal name: status description rtc ready / fail this signal will be active when there is a hardware error with the real time clock. Time sync ready / fail this signal will be active when the source of the time synchronization is lost, or when the time system has to make a time reset. Applicatio...

  • Page 180

    Full, the oldest event is overwritten. The list cannot be cleared and its content cannot be erased. The internal events in this list not only refer to faults in the ied, but also to other activities, such as change of settings, clearing of disturbance reports, and loss of external time synchronizati...

  • Page 181

    13.2.3 diagnosing the ied status via the lhmi hint menu guid-7e8503e9-441b-487a-9cd7-b43463d1cae5 v2 in order to help the user, there is an lhmi page labeled ‘hints’. This page is located under main menu/diagnostics/ied status/hints . For each activated hint there is a headline. From the headline vi...

  • Page 182

    Headline explanation invalid value set for pmu parameters there are two explanations possible: check if the following parameters are set correctly on pmureport: reportrate or svcclass or parameter primval: 1.Frequencysel is not set as 50hz / 60hz. Check if the following parameters are set correctly ...

  • Page 183

    13.3 repair instruction ip8767-1 v1 m11764-2 v2 never disconnect the secondary connection of a current transformer circuit without short-circuiting the transformer’s secondary winding. Operating a current transformer with the secondary winding open will cause a massive potential build up that may da...

  • Page 184

    If the ied has been calibrated with the system inputs, the calibration procedure must be performed again to maintain the total system accuracy. 13.4 repair support m11768-3 v3 if an ied needs to be repaired, the whole ied must be removed and sent to an abb logistic center. Before returning the mater...

  • Page 185

    Section 14 glossary m14893-1 v16 ac alternating current acc actual channel act application configuration tool within pcm600 a/d converter analog-to-digital converter adbs amplitude deadband supervision adm analog digital conversion module, with time synchronization ai analog input ansi american nati...

  • Page 186

    Ccitt consultative committee for international telegraph and telephony. A united nations-sponsored standards body within the international telecommunications union. Ccm can carrier module ccvt capacitive coupled voltage transformer class c protection current transformer class as per ieee/ ansi cmpps...

  • Page 187

    Dhcp dynamic host configuration protocol dip-switch small switch mounted on a printed circuit board di digital input dllb dead line live bus dnp distributed network protocol as per ieee std 1815-2012 dr disturbance recorder dram dynamic random access memory drh disturbance report handler dsp digital...

  • Page 188

    Gde graphical display editor within pcm600 gi general interrogation command gis gas-insulated switchgear goose generic object-oriented substation event gps global positioning system gsal generic security application gse generic substation event hdlc protocol high-level data link control, protocol ba...

  • Page 189

    I-gis intelligent gas-insulated switchgear iom binary input/output module instance when several occurrences of the same function are available in the ied, they are referred to as instances of that function. One instance of a function is identical to another of the same kind but has a different numbe...

  • Page 190

    Ncc national control centre nof number of grid faults num numerical module oco cycle open-close-open cycle ocp overcurrent protection oem optical ethernet module oltc on-load tap changer otev disturbance data recording initiated by other event than start/pick-up ov overvoltage overreach a term used ...

  • Page 191

    Rs485 serial link according to eia standard rs485 rtc real-time clock rtu remote terminal unit sa substation automation sbo select-before-operate sc switch or push button to close scl short circuit location scs station control system scada supervision, control and data acquisition sct system configu...

  • Page 192

    Tcp/ip transmission control protocol over internet protocol. The de facto standard ethernet protocols incorporated into 4.2bsd unix. Tcp/ip was developed by darpa for internet working and encompasses both network layer and transport layer protocols. While tcp and ip specify two protocols at specific...

  • Page 193

    Uv undervoltage wei weak end infeed logic vt voltage transformer x.21 a digital signalling interface primarily used for telecom equipment 3i o three times zero-sequence current.Often referred to as the residual or the earth-fault current 3u o three times the zero sequence voltage. Often referred to ...

  • Page 194

    188.

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    189.

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    — abb ab grid automation products 721 59 västerås, sweden phone: +46 (0) 21 32 50 00 abb.Com/protection-control © copyright 2017 abb. All rights reserved. Specifications subject to change without notice. 1mrk 505 372-uen.