Section 75 00-02-0878
2013-03-07 - 55 -
Breaker Feedback
Whether breaker feedbacks are necessary or not depends on which type of breaker is
selected in the application configuration of the utility software (USW) .
Continuous NE and Continuous ND
This type of breaker does not require feedback.
Pulse
Because of the pulse signal, it is required that at least one feedback is configured for
each breaker.
Compact
This type of breaker signal requires that at least one feedback is configured for each
breaker.
Breaker Spring Load Time
To avoid breaker close failures in situations where breaker ON command is given
before the breaker spring has been loaded; the spring load time can be adjusted for GB
and MB.
The following describes a situation where you risk getting a close failure:
• The genset is in auto mode, the auto start/stop input is active, the
genset is running and the GB is closed.
• The auto start/stop input is deactivated, the stop sequence is executed
and the GB is opened.
• If the auto start/stop input is activated again before the stop sequence
is finished, the GB will give a GB close failure as the GB needs time to
load the spring before it is ready to close.
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