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Cooper Lighting M-LIB3 manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    Protective Relays SALES AID M-LIB3 Low Impedance Bus Differential Relay S150-34-1 October 1999  1999 Cooper Industries, Inc. • New Issue. 1 MODULAR LOW IMPEDANCE BUS PROTECTION TYPE M-LIB3 OPERATION MANUAL[...]

  • Page 2

    M-LIB3 Low Impedance Bus Differential Relay 2 INDEX 1 General utilization and commissioning directions _______________________________________________________ 3 1.1 Storage and transportation______________________________________________________________________ 3 1.2 Installation______________________________________________________________________[...]

  • Page 3

    S150-34-1 3 GENERAL UTILIZATION AND COMMISSIONING DIRECTIONS Always make reference to the specific description of the product and to the Manufacturer's instructions. Carefully observe the following warnings. 1.1 STORAGE AND TRANSPORTATION Must comply with the environmental conditions stated on the product's instruction or by the applicabl[...]

  • Page 4

    M-LIB3 Low Impedance Bus Differential Relay 4 a. Before removing a module, ensure that you are at the same electrostatic potential as the equipment by touching the case. b. Handle the module by its front-plate, frame, or edges of the printed circuit board. Avoid touching the electronic components, printed circuit tracks or connectors. c. Do not pas[...]

  • Page 5

    S150-34-1 5 GENERAL CHARACTERISTICS AND OPERATION 1.12 Modular Low Impedance Bus Bar Protection M-LIB3 The M-LIB system is constituted of a number of modular units, which can be combined to suit to any busbar configuration and allow for easy extension. 1.13 Main features q Low impedance and low burden on main CTS. q High stability with zone biased [...]

  • Page 6

    M-LIB3 Low Impedance Bus Differential Relay 6 1.14.2 M-BC3 = Bus coupler / sectionalizer module (SCE1578) Including : q sets of three auxiliary CTs : 1 set for each side of the bus coupler. q 1 Bus coupler trip output. q 1 Bus Coupler trip input from Feeders ’ Breaker Failure Relays 1.14.3 M-LID3 = Numerical biased protection relay With the follo[...]

  • Page 7

    S150-34-1 7 2.4 F/C Rack Panel 19 ” 3U rack panel suitable to house up to seven plug-in modules type M-BF3 or M-BC3 including back printed circuit board with : q Diodes for supply of the measurement bus of two Main Zones and one Check Zone q 7 Female sockets for plug-in connection of the M-BF3 or M-BC3 modules. q 7 Terminal boards with screw term[...]

  • Page 8

    M-LIB3 Low Impedance Bus Differential Relay 8 2.5 ACCESSORIES 2.5.1 CF1 – Cable with female plug Female connector plug with multicore cable for connection between the terminals of the protection relays and the Zone wiring bus.[...]

  • Page 9

    S150-34-1 9 2.5.2 CFM – Interconnection cable with Male and Female plugs Multicore cable terminated with one male and one female connector plugs for interconnection between F/C Rack Panels.[...]

  • Page 10

    M-LIB3 Low Impedance Bus Differential Relay 10 2.6 Technical Data q Standards: IEC 255, 1000, CE q Rated Frequency: 50/60 Hz q Rated input current: 1 A q Current overload: 2 In q Transient overload: 100 In q Setting ranges: • F n = 50/60 Hz • I ds = zone differential current = (0,2-2) In • R = Bias per Unit = (0,4 - 1) p.u. • I SV = Circuit[...]

  • Page 11

    S150-34-1 11 3 APPARATUS CONFIGURATION The M-LIB3 modular protection apparatus is combined according to the configuration of the protected bus bar System. Generally the following components are needed : q One M-LID3 differential relay for each of the protected bus bar zone. q One M-LID3 differential relay for each Check Zone (normally one only). Th[...]

  • Page 12

    M-LIB3 Low Impedance Bus Differential Relay 12 3.1 SINGLE-LINE DIAGRAM SINGLE-LINE DIAGRAM[...]

  • Page 13

    S150-34-1 13 3.2 Application example As an example a double busbar system with two zones 10 feeders and one bus coupler is considered:[...]

  • Page 14

    M-LIB3 Low Impedance Bus Differential Relay 14[...]

  • Page 15

    S150-34-1 15 4 FEEDER INPUT MODULE M-BF3 M-BF3 is a 51mm wide draw-out modular unit to be plug-in into the F/C rack panel that can house up to 7 modules M-BF3 or M-BC3. With reference to the block diagram SCE1577 the module M-BF3 receives the measuring input from the three Feeder ’ s Current transformers (eventually from the ratio adapting transf[...]

  • Page 16

    M-LIB3 Low Impedance Bus Differential Relay 16 Each of the 7 bays of the F/C panel can accept either one module M-BF3 or one module M-BC3 q Current input burden (each module) : In = 1A : 0.5 VA – 0.5 Ω In = 5A : (on request) q Power supply consumption (each module) : ≅ 4W BACK SIDE M-BF3 CARD F/C PANEL[...]

  • Page 17

    S150-34-1 17 4.1 WIRING DIAGRAM M-BF3 (SCE1577)[...]

  • Page 18

    M-LIB3 Low Impedance Bus Differential Relay 18 5 BUS COUPLER INPUT MODULE M-BC3 M-BC3 is a 51mm wide draw-out modular unit to be plug-in into the F/C rack panel that can house up to 7 modules M-BC3 or M-BF3. With reference to the block diagram SCE1578 the module M-BC3 receives the measuring input from the two sets of the Bus Coupler ’ s current t[...]

  • Page 19

    S150-34-1 19 Each of the 7 bays of the F/C panel can accept either one module M-BF3 or one module M-BC3 q Current input burden (each module) : In = 1A : 0.5 VA – 0.5 Ω In = 5A : (on request) BACK SIDE M-BC3 CARD F/C PANEL[...]

  • Page 20

    M-LIB3 Low Impedance Bus Differential Relay 20 5.1 WIRING DIAGRAM M-BC3 (SCE1578)[...]

  • Page 21

    S150-34-1 21 6 M-LID3 DIGITAL LOW IMPEDANCE DIFFERENTIAL PROTECTION RELAY TYPE M-LID3 LOW IMPEDANCE BIASED DIFFERENTIAL RELAY TYPE M-LID3 ENTER/RESET MODE SELECT + - PROG. dB> PROG/ I.R.F. MICROELETTRICA SCIENTIFICA MILANO ITALY BLOCK INPUT dA> dC> dsv REMOTE TRIGGER TIME SYNC.[...]

  • Page 22

    M-LIB3 Low Impedance Bus Differential Relay 22 6.1 GENERAL CHARACTERISTIC Currents from the CTs of the Feeders connected to each protected zone are conveyed to a wiring bus (one for each phase) that drives the positive and negative halfwave of the current on two different wires. The wiring bus also carries the signal from the CT ’ s saturation de[...]

  • Page 23

    S150-34-1 23 q The signal from CT saturation detectors shunts the measurement for a time proportional to the saturation. This strongly contributes to stability during through faults while maintaining high sensitivity to internal faults. The operation logic in each phase is functionally explained in the following diagram. Operation of the main zone [...]

  • Page 24

    M-LIB3 Low Impedance Bus Differential Relay 24 To compensate the differential current produced by CT ’ s error or saturation, the actual minimum operation level I S is dynamically adjusted in function of the actual through current I R according to the set coefficient [1R], [2R] • I R < [1I R ] : I S = I dS ‚ [1I R ] < I R < [2I R ] :[...]

  • Page 25

    S150-34-1 25 6.5 CONTROLS AND MEASUREMENTS Five key buttons allow for local management of all of the relay's functions. An 8-digit high brightness alphanumerical display shows the relevant readings (xxxxxxxx) (see synoptic table fig.1) FIG.1 MEASURES MAX VAL LastTr-X TRIP NUM ACT MEAS Actual measuremant values Max. values measured Recording of[...]

  • Page 26

    M-LIB3 Low Impedance Bus Differential Relay 26 6.6 SIGNALIZATIONS Eight signal LEDs (normally off) are provided: a) Red LED dA> q Flashing when I d A > [I ds ]. q Illuminated on tripping of the biased differential element : I d A > I S b) Red LED dB> q Flashing when I d B > [I ds ]. q Illuminated on tripping of the biased differentia[...]

  • Page 27

    S150-34-1 27 6.7 OUTPUT RELAYS Five output relays are available (R1, R2, R3, R4, R5) q The relays R1,R2,R3,R4 are normally de-energized (energized on trip): these output relays are user programmable and any of they can be associated to any of the M-LID3's functions. Any relay associated to of any function picks-up as soon as the measured input[...]

  • Page 28

    M-LIB3 Low Impedance Bus Differential Relay 28 6.11 TEST Besides the normal "WATCHDOG" and "POWERFAIL" functions, a comprehensive program of self-test and self-diagnostic provides : q Diagnostic and functional test with checking of program routines and memory's content, run every time the aux. power is switched-on: the disp[...]

  • Page 29

    S150-34-1 29 6.13 READING OF MEASUREMENTS AND RECORDED PARAMETERS Enter the MODE "MEASURE", SELECT the menus "ACT.MEAS"-"MAX VAL"-"LASTTRIP"- "TRIP NUM", scroll available information by key "+" or "-" . 6.13.1 ACT.MEAS Actual values as measured during the normal operation. The va[...]

  • Page 30

    M-LIB3 Low Impedance Bus Differential Relay 30 6.14 READING OF PROGRAMMED SETTINGS AND RELAY'S CONFIGURATION Enter the mode "SET DISP", select the menu "SETTINGS" or "F → RELAY", scroll information available in the menu by keys "+" or "-". SETTINGS= values of relay's operation parameters[...]

  • Page 31

    S150-34-1 31 6.15.2 PROGRAMMING THE CONFIGURATION OF OUTPUT RELAYS Mode PROG menu F → RELAY (Production standard settings here under shown). The key " + " operates as cursor; it moves through the numbers corresponding to the four programmable relays in the sequence 1,2,3,4,(1= relay R1, etc.) and makes start flashing the information act[...]

  • Page 32

    M-LIB3 Low Impedance Bus Differential Relay 32 6.16 MANUAL AND AUTOMATIC TEST OPERATION 6.16.1 Mode "TESTPROG" subprogram “ W/O TRIP" Operation of the yellow key activates a complete test of the electronics and the process routines. All the LEDs are lit-on and the display shows (TEST RUN). If the test routine is successfully comple[...]

  • Page 33

    S150-34-1 33 6.18 CLOCK AND CALENDAR The unit features a built in clock calendar with Years, Months, Days, Hours, Minutes, Seconds, and Tenths of seconds and Hundredths of seconds. 6.18.1 Clock synchronization. The clock can be synchronized via a digital input (terminals 1 – 14) or the serial communication interface. The following synchronization[...]

  • Page 34

    M-LIB3 Low Impedance Bus Differential Relay 34 6.19 WIRNG DIAGRAM M-LID3 (SCE1579)[...]

  • Page 35

    S150-34-1 35 6.20 ELECTRICAL CHARACTERISTICS q REFERENCE STANDARDS IEC 60255 - EN50263 - CE Directive - EN/IEC61000 - IEEE C37 q Dielectric test voltage IEC 60255-5 2kV, 50/60Hz, 1 min. q Impulse test voltage IEC 60255-5 5kV (c.m.), 2kV (d.m.) – 1,2/50 µ s q Climatic tests IEC 68-2 CE EMC Compatibility (EN50081-2 - EN50082-2 - EN50263) q Electro[...]

  • Page 36

    M-LIB3 Low Impedance Bus Differential Relay 36 This page intentianally left blank.[...]