Rea 101 - ABB REF 610 Technical Reference Manual

1MRS 755310
5.2.3.
Feeder Protection Relay
Technical Reference Manual
Arc protection with several REF 610 relays and one REA 101
When realizing an arc protection with both REF 610 relays and an REA 101 (see Fig.
5.2.3.-1), the cable terminations of outgoing feeders are protected by REF 610 relays
using one lens sensor for each relay. The busbar and the incoming feeder is protected
by the sensor loop of the REA 101.
On arc detection at the cable terminations, REF 610 will trip the circuit breaker of
the outgoing feeder. However, on detection of an arc on the busbar, REA 101 will
trip the circuit breaker of the incoming feeder and generate an external trip signal to
all REF 610 relays protecting outgoing feeders, which in turn will result in tripping
of all circuit breakers of outgoing feeders.
Q1
3l
Q2
Q3 Q4
DI1
3I+Io 3I+Io
S1
Fig. 5.2.3.-1 Arc protection with REF 610 and REA 101
M1
TRIP 3
HSO 2
HSO 1
DI1 DI1
S2 S3
REF 610
Q5 Q6
DI1
3I+Io 3I+Io
S4
143