Application - ABB REU 610 Technical Reference Manual

1MRS755972
4.
4.1.
4.2.
Voltage Relay
Technical Reference Manual - ANSI Version

Application

REU 610 is a versatile multifunction voltage relay which is used in general
voltage supervision applications. It complements the range of feeder
protection relay REF 610 and motor protection relay REM 610 in industrial
outgoing feeder and motor feeder applications. The relay can also be used as
back-up protection for industrial as well as utility applications.
The large number of integrated protection functions, including two
overcurrent protection elements, two undervoltage protection elements and
two residual overvoltage protection elements, makes the relay a complete
protection against various voltage fault conditions.
The large number of digital inputs and output contacts allows a wide range of
applications.
Requirements
To secure correct and safe operation of the relay, preventive maintenance is
recommended to be performed every five years when the relay is operating
under the specified conditions; see Table 4.1.-1 and
Section 5.2.3. Technical data.
When being used for real-time clock or recorded data functions, the battery
should be changed every five years.
Table 4.1.-1 Environmental conditions
Recommended temperature range (continuous)
Limit temperature range (short-term)
Temperature influence on the operation accuracy of the voltage
relay within the specified service temperature range
Transport and storage temperature range
Configuration
The appropriate configuration of the output contact matrix enables the use of
the signals from the protection elements as contact functions. The pickup
signals can be used for blocking co-operating protection relays and signalling.
The Fig. 4.2.-1 represents the relay with the default configuration: all pickup
signals are routed to signal outputs and all trip signals to power outputs.
REU 610
-10...+55°C
-40...+70°C
0.1%/°C
-40...+85°C
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