ABB REU 610 Operator's Manual

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Contents

ABB REU 610 Operator's Manual Manual pdf 39 page image

394.3.1.2. Yellow indicator LEDA040266Fig. 4.3.1.2.-1 Yellow indicator LED* Indicator off:No protection stage has started.* Lit indicator:A protection stage has started or generated an alarm. The start and alarmindication can be selected to be either latching or non-latching with the SGFswitches. A non-latching indication is automatically cleared when the fault hasdisappeared and the protection stage has been reset, whereas a latching indicationremains lit until manually cleared.* Flashing indicator:Starting protection stages have been blocked by an external digital input signal.The blocking indication is non-latching, that is, it disappears with the digitalinput signal.The yellow indicator LED continues flashing for as long as a protection stageremains blocked. The blocking indication disappears with the digital input signal orwhen the protection stage is no longer starting.If a protection stage is blocked when other protection stages are starting, theindicator continues flashing. This is because a blocking indication has a higherpriority than a starting indication.4.3.1.3. Red indicator LEDA040265Fig. 4.3.1.3.-1 Red indicator LED* Indicator off:No protection stage has tripped.* Lit indicator:A protection stage has tripped. The trip indication is latching, that is, it remainslit until manually cleared.* Flashing indicator:CBFP has tripped. The indication is latching, that is, it remains flashing untilmanually cleared.Voltage Protection RelayOperator's ManualREU 610REU 6101MRS755770