Alstom MiCOM P545 - 5.5 Circuit breaker control (P544;P546)

Operation P54x/EN OP/La4
MiCOM P543, P544, P545 & P546 (OP) 5-177
OP
DDB CB2 Monitor Alm (321)
DDB CB2 mon LO Alarm (322)
DDB No.CB2 Ops Maint (1115)
DDB No.CB2 Ops Lock (1116)
DDB CB2 Time Maint (1117)
DDB CB2 Closed C ph (918)
DDB CB2 Closed B ph (917)
INTSIG CB Failed to Trip
INTSIG Control CB Unhealthy
INTSIG Control no Check Synch
SET: CB Control
Rst CB mon LO by
DDB CB2 Open 3 ph (911)
Opto Input DDB Rst CB2 data (1597)
Command :
Clear Alarms
DDB CB2 Ext Trip3ph (538)
DDB CB2 Trip 3ph (1600)
Command :
Reset CB Data
DDB CB2 I^ Maint (1113)
DDB CB2 I^ Lockout (1114)
DDB CB2 Ext Trip A (539)
DDB CB2 Ext Trip B (540)
DDB CB2 Ext Trip C (541)
DDB CB2 Closed 3 ph (915)
INTSIG CB Failed to Close
DDB CB2 Trip OutputA(1601)
DDB CB2 Trip OutputB(1602)
S
R
Q
S
R
Q
Command:
CB mon LO reset
DDB CB2 Closed A ph (916)
Command:
Clear Alarms
Yes
SET: CB Control/
CB mon LO Rst Dly
0
CB Close
User Interface
Quiescent State
Quiescent State
No Operation
Clear
No
t
1
Phase C Circuit Breaker Operation Time
Phase A Circuit Breaker Operation Time
Phase B Circuit Breaker Operation Time
Reset
Reset
Reset
Select
Greatest
0
Reset
Excessive Fault
Frequency Counter
Increment
Excessive Fault
Frequency Counter
Select
Maximum
Phase B Broken Current
Phase C Broken Current
Phase A Broken Current
Quiescent State
Quiescent State
No
Yes
Reset
Reset
Reset
Select
Greatest
Disable
SET: CB Time
Maintenance Alarm
Disable
SET CB Time
Lockout Alarm
>CB Time Lockout
Setting
Enable
>CB Time
Maintenance
Setting
SET: No CB Ops
Lock Alarm
Disable
SET: Fault Freq
Lock Alarm
Enable
> Fault Freq Count
Setting Minus 1
> Fault Freq
Count Setting
Enable
> No CB Ops Lock
Setting Minus 1
Disable
> No CB Ops Lock
Setting
> I^ lockout Alarm
> No CB Ops
Maintenance Setting
Enable
Disable
Enable
SET: No CB Ops
Maintenance Alarm
SET: I^ Maintenance
Alarm
Disable
Enable
Disable
Enable
> I^ Maintenance
Setting
> I^ Lockout
Setting
Yes
No
1
1
1
1
1
1
1
1
1
1
1
Reset
Phase A Trip
Counter
Increment
Reset
Phase B Trip
Counter
Increment
Reset
Phase C Trip
Counter
Increment
1
1
&
1
&
&
&
S
R
Q
&
S
R
Q
&
&
&
&
&
1
S
R
Q
&
&
&
t
S
R
Q
&
SET: Fault
Freq Time
S
R
Q
DDB CB2 Pre-Lockout (1598)
DDB CB2 Time Lockout (1118)
INTSIG Reset Lockout Alarm
CB2 LO Alarm (1599)
DDB CB2 FaultFreqLock (1119)
1
P1115ENi
1
1
Set Dominant
Set Dominant
Set Dominant
DDB CB2 Trip OutputC (1603)
Figure 114 Circuit breaker 2 – monitoring
5.5 Circuit breaker control (P544/P546)
This fun
ctionality shows how a circuit breaker close signal from the auto-reclose logic
AutoClose CBx (x = 1 or 2) is applied alongside operator controlled circuit breaker close
and trip control
See AR Figure 43 and Figure 44 (logic diagram supplement) for CB1 & CB2 circuit breaker
c
ontrol respectively.
The P544/P546 includes the following options for the control of each of the two circuit
breakers:
 Local tripping and closing, via the relay menu or Hotkeys
 Local tripping and closing, via relay opto-isolated inputs
 Remote tripping and closing, using the relay communications
 Auto-reclosing via Auto Close CB1 or Auto Close CB2 signal from CB1 & CB2 Auto
Close logic.
It is recommended that separate relay output contacts are allocated for remote circuit
breaker control and protection tripping. This enables the control outputs to be selected via a
local/remote selector switch as shown in Figure 115 Where this feature is not required the
same o
utput contact(s) can be used for both protection and remote tripping.