Siemens Reyrolle 7SR5, Руководство пользователя

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Parameter:
CB-n > Reclaim Timer
•
Default setting:
2 s
Following CB close the reclaim time is started. If a trip occurs during this time the autoreclose will incre-
ment the shot number, return to sequence in progress or lockout if it is the final shot of the sequence. If
the reclaim timer expires without a protection trip the relay will raise
79 Successful AR
and return to
In Service
. If a further trip occurs after completion of the reclaim, it is considered to be a new
sequence which is started from the beginning.
Parameter:
CB-n > Minimum LO Delay
•
Default setting:
2 s
Parameter:
CB-n > Reset LO by Timer
•
Default setting:
Enabled
Parameter:
CB-n > Close Delay
•
Default setting:
10 s
The close output is raised after the control command has been raised and after elapse of this time delay.
The
Close CB Delay
is applicable to manual CB close commands received through a
Close CB
binary
input or via the
Control
menu. Operation of the
Manual Close
CB binary output is delayed by the
Close CB Delay
setting. The status of this delay is displayed on the relay fascia as it decrements
towards zero. Only when the delay reaches zero will the close command be issued and related function-
ality initiated.
Parameter:
CB-n > Blocked Close Delay
•
Default setting:
5 s
The close command may be delayed by a
Block Close
CB signal applied to a binary input. This causes
the feature to pause before it issues the CB close command and can be used, for example, to delay CB
closure until the CB energy has reached an acceptable level. If the block signal has not been removed
before the end of the defined time,
Blocked Close Delay
, the relay will go to the lockout state. The
output
Close CB Blocked
indicates this condition.
Parameter:
CB-n > Controls Latched
•
Default setting:
Latch
CB controls for manually closing and tripping can be latched for extra security.
With reset operation, the control resets when the binary input drops off. This can lead to multiple control
restarts due to bounce on the binary input signal.
With latch operation, the close or trip sequence always continues to completion (or sequence failure) and
bounce on the binary input is ignored.
Reset operation can be useful, however, as it allows a close or trip sequence to be aborted by dropping
off the binary input signal.
Parameter:
CB-n > Travel Alarm
•
Default setting:
1 s
The
CB Open
and
CB Closed
binary inputs are continually monitored to track the
CB Status
.
The CB should only ever be in 3 states:
Control Functions
7.2 52 Circuit-Breaker Control
384 Reyrolle 7SR5, Transformer Protection Device, Device Manual
C53000-G7040-C015-1, Edition 11.2019