ABB PFEA113-65 3BSE028144R0065 control module
Technical data of product parameters
When setting the parameters, attention should be paid to the order of the functions. For run-time reasons, the overcurrent function should be PFEA113-65 3BSE028144R0065configured before the auto-reclosure function.
To prevent the discrimination timer from operating, connect the
overcurrent ‘Trip’ signal to the two inputs ‘Start’ and ‘Trip CB 3P’
of the auto-reclosure function.
The time ‘t Close’ must be set longer than the maximum operating time of the activated (graded) overcurrent functions to prevent the reclaim time from blocking the AR function in the event PFEA113-65 3BSE028144R0065
of a permanent faulProvision is made for coordinating the operation of two protection functions and one or two auto-reclosure functions per line
terminal (see Fig. 3.5.32.4 and Fig. 3.5.32.5).
A master/follower logic has to be used to avoid any time-race
problems due to differing timer tolerances.
A redundant scheme assumes first and second main protection
schemes each with its own reclosure function. The operation of
the reclosure functions therefore has to be coordinated by configuring one as ‘master’ and the other as ‘follower’. If the master
AR starts first, it delays the operation of the follower AR until it
has either achieved successful reclosure or otherwise.
If the follower AR is enabled first, its dead time starts to run, but
should the master start during the follow’s dead time, operation
of the follower reclosure function is suspended and the master
takes over and performs its reclosure cycle.
The follower is on “hot standby” and only takes over, if the master AR or its protection function fails to operate. PFEA113-65 3BSE028144R0065
The signal from a faulty contact like ‘CO Ready’ to the master
recloser, however, would result in a ‘Def.Trip’ output after the
time ‘t Timeout’ and this would also block the Follower AR.
In the circuit of Fig. 3.5.32.4, the master and follower functions
can also be the other way round by appropriately configuring the
system software.Provision is made for a master/follower logic in 1½ breaker
schemes with two line protections per line and an auto-reclosure
function per circuit-breaker.
One of the reclosure functions is assigned the role of master by
appropriately setting the parameter ‘Master mode’. After a successful reclosure, the master AR then enables the follower AR,
respectively its CB (the connections are as given in
Product picture display
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