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

1MRS755537
4.
4.1.
4.2.
Motor Protection Relay
Technical Reference Manual - ANSI Version

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 ground-fault protection.
The large number of digital inputs and output contacts allows a wide range of
applications.

Requirements

To secure correct and safe operation of the relay, preventive maintenance is
recommended to be performed every five years when the relay is operating under
the specified conditions; see Table 4.1.-1 and Section 5.2.3. Technical data.
When being used for real-time clock or recorded data functions, the battery should
be changed every five years.
Table 4.1.-1 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

The appropriate configuration of the output contact matrix enables the use of the
signals from the protection elements as contact functions. The pickup signals can be
used for blocking co-operating protection relays and signalling.
The Fig. 4.2.-1 and Fig. 4.2.-2 represent REM 610 with the default configuration:
all trip signals are routed to trip the circuit breaker. In Fig. 4.2.-1 the residual current
is measured via a core-balance current transformer and in Fig. 4.2.-2 via a
summation connection of the phase current transformers. Fig. 4.2.-3 represents
REM 610 connected to a contactor controlled motor with the trips routed to trip the
contactor via signal relays.
REM 610 REM 610
-10...+55°C
-40...+70°C
0.1%/°C
-40...+85°C
15