Areva MiCOM P441, Technical Manual

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P44x/EN TD/E33 Technical Data
Page 28/30 MiCOM P441/P442 & P444
Setting Range Step Size
Block auto-recloser At T2
At T3
At Tzp
LoL Trip
I2> Trip
I>1 Trip
I>2 Trip
V<1 Trip
V<2 Trip
V>1 Trip
V>2 trip
IN>1 Trip
IN>2 Trip
Aided D.E.F Trip
AR Close pulse length 0.1 to 10s 0.1s
Check synchronic settings
Setting Range Step Size
C/S Check Scheme for A/R Bit 0: Live Bus/Dead Line,
Bit 1: Dead Bus/Live Line
Bit 2: Live Bus/Live Line.
Dead Bus/Dead Line with special PSL
C/S Check Scheme for Man
CB Bit 0: Live Bus/Dead Line,
Bit 1: Dead Bus/Live Line
Bit 2: Live Bus/Live Line.
Dead Bus/Dead Line with special PSL
V< Dead Line 5-30V 1V
V> Live Line 30-120V 1V
V< Dead Bus 5-30V 1V
V> Live Bus 30-120V 1V
Diff Voltage 0.5-40V 0.1V
Diff Frequency 0.02-1Hz 0.01Hz
Diff Phase 5°-90° 2.5°
Bus-Line Delay 0.1 to 2s 0.1s
8.3 Circuit Breaker State Monitoring
The relay can monitor the state of the circuit breaker using either a 52a or 52b signal, it is
possible to select which of these is being used on the relay menu. If the menu is used to
select the ‘Both 52a and 52b’ option is selected then a discrepancy alarm can be detected. If
these contacts remain simultaneously open or simultaneously closed for >5s, then the CB
Status alarm will be indicated.