2 Functions
226
7SD610 Manual
C53000-G1176-C145-4
For automatic re-
closure and circuit
breaker test
Separate binary inputs comprising information on the position of the circuit breaker are
available for the automatic reclosure and the circuit breaker test. This is important for
• The plausibility check before automatic reclosure (refer to Section 2.10),
• The trip circuit check with the help of the TRIP–CLOSE–test cycle (refer to Section
2.16.2).
When using 1
1
/
2
or 2 circuit breakers in each feeder, the automatic reclosure function
and the circuit breaker test refer to one circuit breaker. The feedback information of
this circuit breaker can be connected separately to the device.
For this, separate binary inputs are available, which should be treated the same and
configured additionally if necessary. These have a similar significance as the inputs
described above for protection applications and are marked with „CB1 ...“ to distin-
guish them, i.e.:
• „>CB1 3p Closed“ (No. 410) for the series connection of the NO auxiliary con-
tacts of the CB,
• „>CB1 3p Open“ (No. 411) for the series connection of the NC auxiliary contacts
of the CB,
• „>CB1 Pole L1“ (No. 366) for the auxiliary contact of pole L1,
• „>CB1 Pole L2“ (No. 367) for the auxiliary contact of pole L2,
• „>CB1 Pole L3“ (No. 368) for the auxiliary contact of pole L3.
2.16.1.3 Open Pole Detector
Single-pole dead times can be detected and reported via the Open Pole Detector. The
corresponding protective and monitoring functions can respond. The following figure
shows the logic structure of an Open Pole Detector.
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