Product Overview

Use of the relay

The motor protection relay REM610 is a multifunctional protection relay primarily used to protect motors in various motor applications.

The relay is based on a microprocessor environment. A self-monitoring system continuously monitors the operation of the relay.

The human-machine interface includes a liquid crystal display (LCD) that makes local use of the relay safe and easy.

The relay can be controlled locally via serial communications from a computer connected to the front communication port.

Remote control is available via a serial communications bus connected to the rear connector of the control and monitoring system.

Features

* Three-phase motor start monitoring based on thermal stress calculation with speed switch blocking function

* Three-phase overcurrent protection with timing characteristics and speed switch latching function

* Three-phase short circuit protection with instantaneous or timed characteristic

* Three-phase undercurrent (loss of load) protection with timed characteristic

* Non-directional earth fault protection with timing characteristics.

* Three-phase thermal overload protection

* Three-phase unbalance protection based on negative phase sequence currents with inverse definite minimum time characteristic

* Inverted phase protection based on negative phase sequence current

* Accumulated start-up time counter with restart inhibit function

* Circuit breaker fault protection

* Temperature protection stage with timing characteristics

* Emergency start function

* Optional RTD module

* With six measurement inputs

* Supports PTC thermistors and various RTD sensors

* Three additional galvanically isolated digital inputs

* Four precise current inputs

* Time synchronisation via digital inputs

* Trip circuit monitoring

* User selectable rated frequency 50/60 Hz

* Three normally open power output contacts

* Two change-over signal output contacts

* Output contact functions can be freely configured according to requirements

* Two galvanically isolated digital inputs, three additional galvanically isolated digital inputs on the optional RTD module

* Interference recorder:

* Recording time up to 80 seconds.

* Triggered by one or more internal or digital input signals

* Records four analogue channels and up to eight user-selectable digital channels

* Adjustable sampling rate

* Non-volatile memory for

* Up to 100 time-stamped event codes

* Set values

* Interference logger data

* Time-stamped logged data for the last five events

* Operating indication messages and LEDs showing status in case of power failure

* HMI with alphanumeric LCD and navigation buttons

* Eight programmable LEDs

* Multiple language support

* User-selectable password protection for the HMI

* Display of primary current value

* Demand value

* All settings can be modified via PC

* Optical front communication connection: wireless or cable

* Optional rear communication module with plastic fibre, combined fibre (plastic and glass) or RS-485 connection.

for system communication using SPA bus, IEC 60870-5-103 or Modbus (RTU and ASCII) communication protocols.

* Battery backup for real-time clock

* Battery charge monitoring

* Continuous self-monitoring of electronics and software

* Removable plug-in unit

Applications

The REM610 is a multifunctional relay protection device designed www.ge-drive.com primarily for the protection of standard medium and large medium voltage asynchronous motors in a variety of motor applications.

It handles fault conditions during motor start-up, normal operation, idling and shutdown cooling in applications such as pumps, fans, mills or crushers.

A large number of integrated protection functions enable the REM610 to completely prevent motor damage. The relay can be used with both circuit breaker-controlled and contactor-controlled drives.

The REM610 can also be used to protect equipment such as feeder cables and power transformers that require thermal overload protection and protection against single-phase, two-phase or three-phase overcurrents or non-directional earth faults.

A large number of digital input and output contacts allow a wide range of applications.