ABB 0504994880 Controller unit

ABB 0504994880 Controller unit

The motor protection relay REM610 is a versatile multifunction protection relay

mainly designed to protect motors 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.

* 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 earth-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 inhibit function

* Circuit-breaker failure protection

* Temperature protection stages 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 power output contacts