ABB Motor Protection Relay REM610 Product Features and Applications
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 www.abb-drive.com 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 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.