ABB REM620 IEC Motor protection and control Numerical Relay
Description
ABB REM620 IEC Motor protection and control Numerical Relay
Compact protection and control for asynchronous and synchronous motors: ABB REM620 IEC is a dedicated motor management relay for the protection, control, measurement and supervision of medium- and large-sized asynchronous and synchronous motors in the manufacturing and process industry.
Scope
- Protection for larger asynchronous and synchronous motors
ABB REM620 IEC Key benefits
- Extensive protection and control functionality, either with sensors or conventional instrument transformers
- Functional scalability and extensive possibilities to easily tailor configurations to application-specific requirements
- Withdrawable plug-in unit design for swift installation and testing
- Large graphical display showing customizable SLDs, accessible either locally or through an easy-to-use web-browser-based HMI
- Extensive life-cycle services
Key features
- Extensive motor protection for medium- and large-sized asynchronous and synchronous motors requiring differential protection
- Motor protection both during motor start-up and normal run, with protection and fault clearance in abnormal situations as well
- Additionally extensive motor supervision capabilities via RTD and mA measurements and optionally arc protection
- Supports native IEC 61850 Editions 1 and 2, including redundancy HSR and PRP, GOOSE messaging and IEC 61850-9-2 LE for less wiring and supervised communication
- Supports Modbus, DNP3 and IEC 60870-5-103 communication protocols and different time synchronization methods, including high-accuracy time synchronization via IEEE 1588 V2 Precision Time Protocol
Motor protection and control:
Motor protection is used to prevent damage to the electrical motor, such as internal faults in the motor. Also external conditions when connecting to the power grid or during use have to be detected and abnormal conditions must be prevented. Additionally, the protection relay prevents the disturbance to spread back into the grid.
Motor protection schemes have several protection functions to consider:
- Motor horsepower rating and type
- Supply characteristics such as voltage, phases, method of grounding, and available short-circuit current
- Vibration, torque, and other mechanical limits
- Nature of the process
- Environment of motor, associated switching device
- Hot and cold permissible locked-rotor time and permissible accelerating time
- Time versus current curve when starting the motor
- Frequency of starting
The protection relays provide main protection for synchronous and asynchronous motors. They can be used for circuit-breaker and contactor-controlled motors in a variety of drive applications, such as, motor drives for pumps, fans, compressors, mills and crushers.
Scope
- Motor protection and control for a variety of drives
Product benefits
- Prevent damage to electrical motors
- Prevents disturbance to spread back into the grid
Product features
- Application-specific standard configuration resulting in shorter relay setup and commissioning time
- Pre-configured solutions for utility distribution and industrial application
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