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1MRS 752137-MUM
Combined Overcurrent and Earth-Fault Relay
Operator’s Manual
REJ 525
9. Abbreviations
CBFP
Circuit-breaker failure protection
CPU
Central processing unit
IDMT
Inverse definite minimum time characteristic
IRF
Internal relay fault
LCD
Liquid Crystal Display
LED
Light-emitting diode
HMI
Human-Machine Interface
SGB
Switchgroup for binary input
SGF
Switchgroup for functions
SGR
Switchgroup for output contacts
Summary of Contents for REJ 525
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