P R Od U C T Ov Er V I Ew; Use Of The Relay; Features - ABB REU 610 Technical Reference Manual

1MRS755769
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3 . 1.
3 . 2 .
Voltage Relay
Technical Reference Manual

P r od u c t ov er v i ew

Us e of th e r elay
The voltage relay R E U 610 is a versatile multifunction protection relay
mainly designed for overvoltage and undervoltage protection and for
supervision of medium voltage distribution networks. The relay can also be
used for protecting generators, motors and transformers.
The relay is based on a microprocessor environment. A self- supervision
system continuously monitors the operation of the relay.
The H M I includes a liquid crystal display ( L CD ) which makes the local use
of the relay safe and easy.
L ocal control of the relay via serial communication can be carried out with a
computer connected to the front communication port. R emote control can be
carried out via the rear connector connected to the control and monitoring
system through the serial communication bus.
F eatu r es
Overvoltage protection with definite- time or ID M T characteristic, low- set
*
stage
Overvoltage protection with definite- time or ID M T characteristic, high- set
*
stage
Based on phase- to- phase voltage measurement or negative phase-
*
sequence ( N PS ) voltage
Undervoltage protection with definite- time or ID M T characteristic, low-
*
set stage
Can also be used as alarm stage
*
Undervoltage protection with definite- time or ID M T characteristic, high-
*
set stage
Based on phase- to- phase voltage measurement or positive phase-
*
sequence ( PPS ) voltage
R esidual overvoltage protection with definite- time characteristic, low- set
*
stage
R esidual overvoltage protection with definite- time characteristic, high- set
*
stage
Circuit- breaker failure protection
*
Trip counters for circuit- breaker condition monitoring
*
Trip- circuit supervision with possibility to route the warning signal to a
*
signal output
Trip lockout function
*
F our accurate voltage inputs
*
User- selectable rated voltage 100/ 110/ 115 / 120 V
*
User- selectable rated frequency 5 0/ 60 H z
*
REU 610
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