Instructions; Application; Requirements; Configuration - ABB REM 610 Technical Reference Manual

REM 610
3.
3.1.
3.2.
3.3.
10
Motor Protection Relay
Technical Reference Manual

Instructions

Application

REM 610 is a versatile multifunction protection relay mainly designed for protection
of standard medium and large MV asynchronous motors in a wide range of motor
applications. 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 complete
protection against motor damage. The relay can be used with both circuit-breaker
controlled and contactor controlled drives.
REM 610 can equally well be used to protect, for instance, feeder cables and power
transformers which require thermal overload protection and, for instance, single-,
two- or three-phase overcurrent or non-directional earth-fault protection.

Requirements

To secure correct and safe operation of the relay, preventive maintenance is
recommended to be performed every five years when REM 610 is operating under
the specified conditions; see below and section Technical data.
When being used for real-time clock or recorded data functions, the battery should
be changed every five years.
Environmental conditions
• Recommended temperature range (continuous)
• Limit temperature range (short-term)
• Temperature influence on the operation accuracy of the
protection relay within the specified service temperature range
• Transport and storage temperature range

Configuration

Setting and connection examples
The appropriate configuration of the output contact matrix enables the use of the
signals from the protection stages as contact functions. The start signals can be used
for blocking co-operating protection relays and signalling.
Fig. 3.3.-1 and Fig. 3.3.-2 represent REM 610 with the default configuration: all trip
signals are routed to trip the circuit breaker. In Fig. 3.3.-1 the residual current is
measured via a core-balance current transformer and in
Fig. 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 the
trips routed to trip the contactor.
1MRS 752263-MUM
-10...+55°C
-40...+70°C
0.1%/°C
-40...+85°C