Cooper Lighting M-LIB3 - Manual

Page 2 - M-LIB3 Low Impedance Bus Differential Relay; INDEX

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 - Must be compatible with their declared performance.; PROTECTION EARTHING; When grounding is required, carefully check its efficiency.; SETTING AND CALIBRATION; required and periodically check their integrity.

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

Page 4 - equipment by touching the case.; FAULT DETECTION AND REPAIR

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, p...

Page 9 - CFM – Interconnection cable with Male and Female plugs

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 forinterconnection between F/C Rack Panels.

Page 10 - CURRENT TRANSFORMER REQUIREMENTS; In

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 ...

Page 11 - APPARATUS CONFIGURATION; Generally the following components are needed :

S150-34-1 11 3 APPARATUS CONFIGURATION The M-LIB3 modular protection apparatus is combined according to the configuration of the protected busbar 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 ...

Page 12 - DIAGRAM

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

Page 13 - Application example

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 15 - FEEDER INPUT MODULE M-BF3; Wiring is made according to the diagram SCE1577 :

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 rackpanel that can house up to 7 modules M-BF3 or M-BC3.With reference to the block diagram SCE1577 the module M-BF3 receives themeasuring input from the three Feeder’s Current transformers...

Page 16 - BACK SIDE

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 PA...

Page 18 - BUS COUPLER INPUT MODULE M-BC3; Each of the two zone wiring bus also includes the wire carrying the

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 rackpanel that can house up to 7 modules M-BC3 or M-BF3.With reference to the block diagram SCE1578 the module M-BC3 receives themeasuring input from ...

Page 22 - GENERAL CHARACTERISTIC

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 ca...

Page 23 - OPERATION OF THE BIASED DIFFERENTIAL ELEMENTS

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 th...

Page 25 - CONTROLS AND MEASUREMENTS; MODE

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 measurem...

Page 28 - plus one indirect operable key

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

Page 30 - Display

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 r...

Page 31 - PROGRAMMING THE CONFIGURATION OF OUTPUT RELAYS

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....

Page 32 - MANUAL AND AUTOMATIC TEST OPERATION; Running the; WithTRIP; WARNING; In case of Internal Relay Fault detection, proceed as indicated :

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)...

Page 33 - CLOCK AND CALENDAR; Note that if a sync signal is received exactly in the middle of a T; period, the clock is set to the

S150-34-1 33 6.18 CLOCK AND CALENDAR The unit features a built in clock calendar with Years, Months, Days, Hours, Minutes, Seconds, andTenths 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 communi...

Page 35 - ELECTRICAL CHARACTERISTICS; CHARACTERISTICS

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 Compatibil...

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