13
3.
Product overview
3.1.
Use of the relay
The motor protection relay REM 610 is a versatile multifunction protection relay
mainly designed to protectmotors in a wide range of motor applications.
The relay is based on a microprocessor environment. A self-supervision system
continuously monitors the operation of the relay.
The HMI includes a liquid crystal display (LCD) which makes the local use of the
relay safe and easy.
Local control of the relay via serial communication can be carried out with a
computer connected to the front communication port. Remote control can be carried
out via the rear connector connected to the control and monitoring system through
the serial communication bus.
3.2.
Features
*
Three-phase motor start-up supervision based on thermal stress calculation with
speed switch blocking ability
*
Three-phase overcurrent protection with definite-time characteristic and speed
switch blocking ability
*
Three-phase short-circuit protection with instantaneous or definite-time
characteristic
*
Three-phase undercurrent (loss of load) protection with definite-time
characteristi
*
Non-directional ground-fault protection with definite-time characteristic.
*
Three-phase thermal overload protection
*
Three-phase unbalance protection based on the negative-phase-sequence current
with inverse definite minimum time characteristic
*
Phase reversal protection based on the negative-phase-sequence current
*
Cumulative start-up time counter with restart disable function
*
Circuit-breaker failure protection
*
Temperature protection elements with definite-time characteristic
*
Emergency start function
*
Optional RTD module
*
with six measuring inputs
*
supports PTC thermistors and various RTD sensors
*
three additional galvanically isolated digital inputs
*
Four accurate current inputs
*
Time synchronization via a digital input
*
Trip-circuit supervision
*
User-selectable rated frequency 50/60 Hz
*
Three normally open trip contacts
Motor Protection Relay
Technical Reference Manual - ANSI Version
REM 610
REM 610
1MRS755537
Summary of Contents for REM 610
Page 1: ...Motor Protection Relay REM 610 REM 610 Technical Reference Manual ANSI Version ...
Page 2: ......
Page 6: ...6 ...
Page 8: ...8 ...
Page 12: ...12 ...
Page 124: ...124 ...
Page 144: ...144 ...
Page 154: ...154 ...
Page 157: ......