361MRS 752137-MUMCombined Overcurrent and Earth-Fault RelayOperator’s ManualREJ 5259. AbbreviationsCBFP Circuit-breaker failure protectionCPU Central processing unitIDMT Inverse definite minimum time characteristicIRF Internal relay faultLCD Liquid Crystal DisplayLED Light-emitting diodeHMI Human-Machine InterfaceSGB Switchgroup for binary inputSGF Switchgroup for functionsSGR Switchgroup for output contacts
