Cooper Low Impedance Bus Differential Relay M-LIB3 Operation Manual Download Page 34 | Manualshive

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M-LIB3 Low Impedance Bus Differential Relay

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6.19 WIRNG DIAGRAM M-LID3 (SCE1579)

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Summary of Contents for Low Impedance Bus Differential Relay M-LIB3

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: ...__________ 20 6 Digital Low Impedance Differential Protection Relay M LID3_______________________________________________ 21 6 1 General Characteristic_________________________________________________...

Page 3: ...imits 1 5 OUTPUTS LOADING Must be compatible with their declared performance 1 6 PROTECTION EARTHING When grounding is required carefully check its efficiency 1 7 SETTING AND CALIBRATION Carefully che...

Page 4: ...nti static surface or on a conducting surface which is at the same potential as yourself e Store or transport the module in a conductive bag More information on safe working procedures for all electro...

Page 5: ...or check zone feature without duplication of main CTs q Self contained isolator repeat relays switching at secondary of the zone input CTs q Self contained discrepancy alarm relays q Multivoltage powe...

Page 6: ...3 M LID3 Numerical biased protection relay With the following features q Double circuit for Biased differential protection q Double circuit for unbiased differential protection q Double circuit for CT...

Page 7: ...for interfacing with the differential protection relays q 1 Female connector socket for interconnection with other F C Rack Panels q 1 Power supply module The auxiliary power is supplied by a built i...

Page 8: ...mpedance 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...

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: ...lity level 40 In max 2 7 CURRENT TRANSFORMER REQUIREMENTS Current transformer requirements Minimum knee point voltage VK F In RT where F Accuracy limit factor 20 recommended In Main CT s rated seconda...

Page 11: ...ule MC R Control Matrix MX7 5 Breaker Failure relay BF20 et cetera q One plug in module M BF3 for each incoming outgoing Feeder connected to the Busbar system q One plug in module M BC3 for each Bus C...

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: ...inhibit the tripping of the differential element due to CT s saturation during external faults q Power Supply is fed to all the M BF3 modules from the Power supply unit included in the F C rack panel...

Page 16: ...lay 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 In 5A on request q Power supply consumption each m...

Page 17: ...S150 34 1 17 4 1 WIRING DIAGRAM M BF3 SCE1577...

Page 18: ...s Differential Relay the trip coil of the Bus Coupler s Circuit Breaker is energized by both the zone trip signals It means that any fault on the bus bar system always trips the bus coupler q Power Su...

Page 19: ...50 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 In 5A on request BACK SIDE M BC3 CARD F C PANE...

Page 20: ...M LIB3 Low Impedance Bus Differential Relay 20 5 1 WIRING DIAGRAM M BC3 SCE1578...

Page 21: ...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 d...

Page 22: ...SUPPLY The auxiliary power is supplied by a fully isolated and self protected built in interchangeable module Two options are available 24V 20 110V 15 a c 80V 20 220V 15 a c a b 24V 20 125V 20 d c 90V...

Page 23: ...e incoming and outgoing currents When no fault inside the zone is experienced should be Id 0 Due to differences among the CTs and mostly to CT saturation when faults outside the zone make large throug...

Page 24: ...ion the actual minimum operation level IS is dynamically adjusted in function of the actual through current IR according to the set coefficient 1R 2R IR 1IR IS IdS 1IR IR 2IR IS IdS 1R IR 1IR IR 2IR I...

Page 25: ...scanning by the key SELECT Parameter modification by the key Set validation by the key ENTER Scanning of the menus by the key MODE SELECT ENTER Enabled only if input current is zero ENTER RESET MODE S...

Page 26: ...Yellow LED PROG I R F q Flashing during the programming of the parameters or in case of Internal Relay Fault f Red LED Remote Trigger q Illuminated when the oscillography trigger input is activated g...

Page 27: ...le at relay s level can be received at computer s level The transmission standard is RS485 converter 485 232 available with ModBus Jbus protocol Each relay is identified by its programmable address co...

Page 28: ...SET plus one indirect operable key PROG see synoptic table a fig 1 a White key MODE when operated it enters one of the following operation modes indicated on the display MEASURES Reading of all the pa...

Page 29: ...phase B dCxx xxn As above phase C IR xx xn Through current 0 99 9 per unit of the rated input current 6 13 3 LASTTRIP Display of the function which caused the tripping of the relay plus values of the...

Page 30: ...the key SELECT while or are pressed Press key ENTER RESET to validate the set values 6 15 1 PROGRAMMING OF FUNCTIONS SETTINGS Mode PROG menu SETTINGS Production standard settings here under shown Dis...

Page 31: ...ersa After having programmed all four relays press ENTER to validate the programmed configuration Display Description Is 1 Bias Differential element operates relay R1 eventually plus R2 R3 R4 as progr...

Page 32: ...t code is displayed If at the next automatic test no internal fault is detected the display and R5 reset q Further operation of key SELECT instead of the TEST programs gives the indication of the vers...

Page 33: ...groups of digits YY MMM or DD blinking The DOWN key operates as a cursor It moves through the groups of digits in the sequence YY MMM DD YY The UP key allows the user to modify the currently blinking...

Page 34: ...M LIB3 Low Impedance Bus Differential Relay 34 6 19 WIRNG DIAGRAM M LID3 SCE1579...

Page 35: ...00A m 0 1 1MHz q Electrical fast transient burst IEC61000 4 4 level 4 2kV 5 50ns 5kHz q HF disturbance test with damped oscillatory wave 1MHz burst test IEC60255 22 1 class 3 400pps 2 5kV m c 1kV d m...

Page 36: ...M LIB3 Low Impedance Bus Differential Relay 36 This page intentianally left blank...

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