Implementations; Outgoing Blocking Signal To The Incoming Feeder - ABB REX 521 Technical Reference Manual, Standard Configurations

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Protection Relay
Technical Reference Manual, Standard Configurations
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Implementations

In the sections below a few implementation examples for the standard configuration
B01 are presented.

Outgoing blocking signal to the incoming feeder

The start signals from any protection function can be routed to an output relay to
provide a blocking signal to the incoming feeder. The overcurrent stages 3I>> and
3I>>> have also a separate BSOUT signal for blocking purpose.
To use the start signal from a protection function the signal has to be routed via the
Main menu\Configuration\Output Switchgroups\Start 1 or
\Start 2. When the start signals have been routed, the output relay has to be
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REX 521
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CLOSE circuit breaker
TRIP circuit breaker
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