Alstom MiCOM P545 - 1.4.2.2 Circuit breaker control (P544;P546)

P54x/EN ST/La4 Settings
(ST) 4-70 MiCOM P543, P544, P545, P546
ST
Setting range
Menu text Default setting
Min. Max.
Step size
Total Re-closures Data
Displays the number of successful re-closures.
Reset Total A/R No No, Yes
Allows user to reset the se counters. auto-reclo
CB Status Input 52B 1 pole
None, 52A 1 pole, 52B 1 pole, 52A & 52B
1 pole, 52A 3 pole, 52B 3 pole, 52A & 52B
3 pole
Setting to define the type of circuit breaker contacts that will be used for the circuit br
control logic. Form A contacts match the status of the circuit breaker primary contacts
form B are opposite to the breaker status.
eaker
,
s selec ual contacts in the P grammable
for phase A, phase B, and ph le mean that only a
When 1 pole i
Scheme Logic
ted, individ must be assigned
ase C. Setting 3 po
ro
s
single contact is used, common to all 3 poles.
1.4.2.2 C )
T s the fo s for contr rs:

 lay opto-isolated inputs
 ing the relay
ircuit breaker control (P544/P546
he relay include llowing option ol of two circuit breake
Local tripping and closing, via the relay menu or hotkeys
Local tripping and closing, via re
Remote tripping and closing, us communications
Setting range
Menu text Default setting
Min. Max.
Step size
CB control by Disabled
Disabled, Local, Remote, Local + Remote,
Opto, Opto + local, Opto + Remote, Opto +
Remote + local
This Setting selects the type of circuit breaker c the logic
se
ontrol that be used in .
This setting is common to both CB1 and CB2. It determines which manual trip and clo
controls can be used to control both circuit breakers.
Close Pulse Time 0.5 s 0.1 s 10 s 0.01 s
Defines the duration of the close pulse within which CB should close when close
command is issued. If CB fails to close after elapse of this time, CB close fail alarm (DDB
303 or 325 for CB1 & CB2 respectively) is set.
Trip Pulse Time 0.5 s 0.1 s 5 s 0.01 s
Defines the duration of the trip pulse within which CB should trip when manual or
protection trip command is issued. If CB does not trip within set Trip Pulse Time, CB failed
to trip alarm is set.
Man Close Delay 10 s 0.01 s 600 s 0.01 s
This defines the delay time before the close pulse is executed.