ABB Motor Protection Relay

REM611 ABB Motor Protection Relay

The REM611 ABB Motor Protection Relay is a specialized motor protection relay used in the industrial and process industries for asynchronous motor protection, control, measurement, and supervision.

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Feature of ABB Motor Protection Relay

  • Preconfigured functions for motor protection application
  • The relays are delivered preconfigured and factory-tested to shorten engineering and commissioning time
  • Self-healing communication based on HSR/PRP using an optional second Ethernet bus
  • The compact design makes it suitable for both new and retrofit installations
  • Withdrawable plug-in unit design for swift installation and testing

Application of ABB Motor Protection Relay

The primary safety measure for asynchronous motors and the drives that go with them is ABB Motor Protection relay.
The motor IED is typically utilized in a range of drives, including pumps and conveyors, crushers and choppers, mixers and agitators, fans and aerators, circuitbreaker or contactor-controlled medium and/or small sized motors.
The motor IED has been carefully designed to protect against earthfaults. It is possible to obtain sensitive and dependable earth-fault prevention with a cable current transformer. For earth-fault protection, phase current transformers in the Holmgreen (summation) connection can also be employed. In that scenario, the internal interlocking characteristics of the IED or an appropriate stabilizing resistor in the common neutral return can be used to prevent potentially undesirable actions of the earth-fault protection at motor start-up owing to current transformer saturation.

Specification of ABB Motor Protection Relay

Binary inputs

Description Value
Operating range ±20% of the rated voltage
Rated voltage 24…250 V DC
Current drain 1.6. 1.9 mA
Power consumption 31.0. 570.0 mW
Threshold voltage 16…176 V DC
Reaction time <3 ms

Signal output X100: SO1

Description Value
Rated voltage 250 V AC/DC
Continuous contact carry 5 A
Make and carry for 3.0 s 15 A
Make and carry for 0.5 s 30 A
Breaking capacity when the control-circuit time constant L/R<40 ms, at 48/110/220 V DC 1 A/0.25 A/0.15 A
Minimum contact load 100 mA at 24 V AC/DC

 

Signal outputs and IRF output

Description Value
Rated voltage 250 V AC/DC
Continuous contact carry 5 A
Make and carry for 3.0 s 10 A
Make and carry 0.5 s 15 A
Breaking capacity when the control-circuit time constant L/R<40 ms, at 48/110/220 V DC 1 A/0.25 A/0.15 A
Minimum contact load 10 mA at 5 V AC/DC

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