GE IS200VAOCH1CAB IS200VAOCH1CBB PRINTED CIRCUIT BOARD

Description

GE General Electric Technical Specifications: IS200VAOCH1CAB

The 750 and 760 have eight output relays. 1 TRIP, 2 CLOSE, and 8 SELF-TEST WARNING have fixed opera

IS200VAOCH1CAB tion while 3-7 AUXILIARY are configurable. Regardless of the mode of operation, the corresponding front

panel indicator turns on while the output relay is signaling. If the non-operated state of an output relay is pro

grammed as de-energized, the corresponding indicator will be on when the normally open contacts are closed.

If the non-operated state of an output relay is programmed as energized, the corresponding indicator will be on

when the normally open contacts are open.

1 TRIP: A trip sequence can be initiated by a protection element, a logic input element, a remote open com

mand, a serial open command, or a front panel open command. When started, the 1 TRIP indicator turns on

IS200VAOCH1CAB briefly while the 1 TRIP relay is energized. After the auxiliary breaker contacts indicate that the breaker has

opened, the 1 TRIP relay and indicator stop operating. If both 52a and 52b auxiliary contacts are not installed,

the 1 TRIP relay and indicator will de-energize 100 ms after the trip condition clears, or after two seconds.

2 CLOSE: A close sequence can be initiated by a 760 reclosure or a remote, serial, or front panel close com

mand. When started, the 2 CLOSE indicator turns on briefly while the 2 CLOSE relay energizes. After the aux

iliary breaker contacts indicate that the breaker has closed, the 2 CLOSE relay and indicator stop operating. If

both 52a and 52b auxiliary contacts are not installed, the 2 CLOSE relay and indicator operate for 200 ms.

3-7 IS200VAOCH1CAB AUXILIARY: These relays are intended for customer specific requirements that can be initiated by any pro

tection element or function whose RELAYS (3-7) setpoint has “3”, “4”, “5”, “6”, or “7” selected. The 3-7 AUXIL

IARY indicators will turn on while the corresponding relays are operating.

8 SELF-TEST WARNING: During normal operation, this indicator is off with the fail-safe 8 SELF-TEST WARN

ING relay energized. If any abnormal condition is detected during self monitoring (such as a hardware failure)

the indicator turns on and the relay de-energizes. If control power is lost or the relay is drawn out of its case,

the 8 SELF-TEST WARNING relay signals loss of protection by de-energizing, but the electronic LED indicator

remains off. Since there are no shorting contacts across the 8 SELF-TEST WARNING relay, both the normally

open and normally closed contacts are open when the relay is drawn out.

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Lead time problem
(1) For the spot products in stock, the de

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