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AC GENERATOR CURRENT DIFFERENTIAL GUARD0 pages
190742_VO.pdf table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.00pt "Arial", sans-serif; } .font1 { font:7.00pt "Arial", sans-serif; } .font2 { font:10.00pt "Arial", sans-serif; } .font3 { font:16.00pt "Arial", sans-serif; } .font4 { font:26.00pt "Arial", sans-serif; } .font5 { font:6.00pt "Arial Black", sans-serif; } .font6 { font:11.00pt "Arial Black", sans-serif; } .font7 { font:6.00pt "Courier New", monospace; } KPC112x ; GENERATOR CURRENT DIFFERENTIAL GUARI Generator stator earth fault protection Օ Winding insulation protection "Pathfinder" function eases faultfinding Օ For use with 1Aor5Acurrenttransformers Very fast analogue output (<50mS), (F-version) Spթcifications Description KPC112E protects against phase-, earth- and winding faults within the protected area (the stator) of large AC generators. It detects even minute insulation punctures, flash-over carbon deposits and contamination. The unit measures highest up differential current from antiparallelled CTs in a Merz-Price configuration, by comparing current levels at the end of each phase winding. R1 is used for early warning. R2 or R3 (fail safe) is to be used for generator breaker trip, the "other" alarm relay can be used for local indication input to PMS, alarm system etc. Alarm trip must be set sufficiently high to ensure that generator magnetisation current does not cause tripping. The alarm delay is to be set so that the initial inrush current have returned to normal level before the delay period elapses. The warning trip level and delay can besetas required togive early warning. User settable trip levels and delays. Colour of LEDs indicates alarm status. LEDs flash during count-down. The meter and the triple-zone status LEDs at a glance gives the clear safety message: ALARM/WARNING/NORMAL The F-versions have an fast response mA output signal proportional to highest up current. The "Pathfinder" function identifies the phase(s) causing the trip by the flashing pattern ofthe relevant LED(s). Standard Auxiliary 24VDC (Fuse 0,5A) Voltage: Optional Auxiliary Voltage: 100-120,200-240, 380-415 or 440-460VAC, 40-70Hz (Fuse 2A) Current Input:: 1 or 5A C.T. (Class 0,5 or better) Contact rating: AC: 100VA-250V/2A max. DC:50W-100V/1Amax. Adjustments: Trip level: Delay: Warning: 0-100% of alarm level 0-30 sec. Alarm: 0-40% of I nom. 0-3 sec. Analogue outputs: F-versions Up to 20mA, max 500ohm Upto 10V, min 10kohm (other on request) Temperature: -20 to +70°C Weight: 0.6kgs Front protection: IP54 (IP65 optional) The unit meets IEC60092-504 and the relevant environmental and EMC tests specified in IEC60068/60092 and IEC61000/60533 respectively, to comply with the requirements ofthe major Classification Societies. Pathfinder Function KPC112x L1(R) L2(S) L3(T) R1 14 -1 Relays shown de-energised, energises when unit is powered. Red indicates LED on 16 "^sj 17--f" KPC112E, KPC112F Warning Alarm Fail safe Latch R1 ! R2 ! ! R3 ! ! ! 19 20 --t R3 Relay Reset Any latched relay is reset by linking terminals 30 and 31. + Analogue O/P (Optional) Reset r DCAux + DLii load UK - Denmark REF:Datasheet.KPC112x- Megacon rese the rightto make any changes to the information at any time Xi X. iegacon.com mCQQCOn Norway - I
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