750/760 Status Led Indicators - GE 750 Instruction Manual

750/760
Feeder Management Relay
750/760 Status LED
Indicators
NOTE
4–2
FIGURE 4–1: 750/760 Front Panel
• RELAY IN SERVICE: This indicator will be on continuously if the relay is
functioning normally and no major self-test errors have been detected. During
operation the relay continuously performs various self tests and if a major self-
test fails, the indicator will be turned off, all output relays will be de-energized,
and the Self-Test Warning LED will be turned on. This indicates a complete loss
of protection. See the self-test warning section later in this chapter.
• TRIP: This indicator flashes when the relay detects a trip condition and
operates the Trip Relay to open the breaker. After the initiating fault has been
cleared, this LED can be turned off with a reset.
• ALARM: While the relay is detecting an alarm condition, this indicator will flash.
Even if latched output relays are programmed to operate with the alarm, the
indicator will automatically turn off if the alarm condition clears. Such output
relays will remain in the operated state until a reset is performed.
Latched Alarm: This relay flashes while the relay is detecting an alarm
condition. After the condition clears, the indicator remains illuminated and can
be turned off with a reset.
• PICKUP: For the purpose of testing and calibration verification, this indicator
will light steady when any protection feature has its pickup threshold exceeded.
Eventually, if the fault condition persists, a trip will be issued by the relay. If the
measured parameter drops below its pickup level, the indicator will turn off.
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