ABB REM 610 Technical Reference Manual

Also see for REM 610: Operator's manual Product guide Installation manual Technical reference manual Product guide

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ABB REM 610 Technical Reference Manual Manual pdf 10 page image

101MRS 752263-MUMMotor Protection RelayTechnical Reference ManualREM 6103. Instructions3.1. ApplicationREM 610 is a versatile multifunction protection relay mainly designed for protectionof standard medium and large MV asynchronous motors in a wide range of motorapplications. It handles fault conditions during motor start up, normal run, idling,and cooling down at standstill, e.g. in pump, fan, mill or crusher applications.The large number of integrated protection functions makes REM 610 a completeprotection against motor damage. The relay can be used with both circuit-breakercontrolled and contactor controlled drives.REM 610 can equally well be used to protect, for instance, feeder cables and powertransformers which require thermal overload protection and, for instance, single-,two- or three-phase overcurrent or non-directional earth-fault protection.3.2. RequirementsTo secure correct and safe operation of the relay, preventive maintenance isrecommended to be performed every five years when REM 610 is operating underthe specified conditions; see below and section Technical data.When being used for real-time clock or recorded data functions, the battery shouldbe changed every five years.Environmental conditionsï Recommended temperature range (continuous) -10...+55°Cï Limit temperature range (short-term) -40...+70°Cï Temperature influence on the operation accuracy of theprotection relay within the specified service temperature range0.1%/°Cï Transport and storage temperature range -40...+85°C3.3. ConfigurationSetting and connection examplesThe appropriate configuration of the output contact matrix enables the use of thesignals from the protection stages as contact functions. The start signals can be usedfor blocking co-operating protection relays and signalling.Fig. 3.3.-1 and Fig. 3.3.-2 represent REM 610 with the default configuration: all tripsignals are routed to trip the circuit breaker. In Fig. 3.3.-1 the residual current ismeasured via a core-balance current transformer and inFig. 3.3.-2 via a summation connection of the phase current transformers.Fig. 3.3.-3 represents REM610 connected to a contactor controlled motor with thetrips routed to trip the contactor.