Supervision
Trigger Modes
There are three trigger modes for the
CBF module available. In addition to that, there are three assignable trigger
inputs available that might trigger the
CBF module even if they are not assigned within the breaker manager onto
the breaker that is to be monitored.
•
All Trips: All trip signals that are assigned to this breaker (within the trip manager) will start the CBF module (please
refer also to section „Trigger signals of the Circuit Breaker Failure“).
•
Current Trips: All current trips that are assigned to this breaker (within the trip manager) will start the CBF module
(please refer also to section „Trigger signals of the Circuit Breaker Failure“).
•
External Trips: All external trips that are assigned to this breaker (within the trip manager) will start the CBF module
(please refer also to section „Trigger signals of the Circuit Breaker Failure“).
•In addition, the User can also select
none
(e.g.: if the User intends to use one of the three additional assignable
trigger inputs).
Those trips can exclusively start the breaker failures that are assigned
within the trip manager to the breaker that is to be supervised. In contrast
to that the additional three triggers 1-3 will trigger the
CBF
module even if
they are not assigned onto the breaker within the corresponding breaker
manager.
Select the winding side (Breaker, Winding) from which the measured
currents should be taken in case this protective device provides more than
one current measurement card.
This Notice applies to protective devices that offer control functionality
only! This protective element requires, that a switchgear (circuit breaker) is
assigned to it. It is allowed only to assign switchgears (circuit breaker) to
this protective element, whose measuring transformers provide measuring
data to the protective device.
Breaker Failure Lockout
The signal of the Circuit Breaker Failure is latched. This signal can be used to block the breaker against a switching
on attempt.
507
MRU4
DOK-HB-MRU4-2E