GE P444

Technical Data
P44x/EN TD/Hb
6
MiCOM P40 Agile P442, P444
(TD) 2-
9
Timing and Accuracy
PERFORMANCE DATA
For all accuracies specified, the repeatability is
± 5%, unless otherwise specified
DISTANCE PROTECTION
All quoted operating times include the closure
of the trip output contact.
50 Hz Operation
Minimum tripping time: 13 ms (SIR = 5)
14 ms (SIR = 30)
Maximum tripping time: 18 ms (SIR = 5)
21 ms (SIR = 30)
Typical tripping time: 17 ms (SIR = 5)
17.5 ms (SIR = 30)
100% of faults up to 75% of Zone 1 reach
setting trip subcycle at SIR=5.
99% of faults up to 75% of Zone 1 reach
setting trip subcycle at SIR=30.
60 Hz Operation
Minimum tripping time: 13 ms (SIR = 5)
13 ms (SIR = 30)
Maximum tripping time: 16.5 ms (SIR = 5)
18 ms (SIR = 30)
Typical tripping time: 14 ms (SIR = 5)
16 ms (SIR = 30)
100% of faults up to 75% of Zone 1 reach
setting trip subcycle at SIR=5.
88% of faults up to 75% of Zone 1 reach
setting trip subcycle at SIR=30.
Accuracy
Characteristic shape, up to SIR = 30:
±5% for on-angle fault (the set line angle)
±10% for off-angle
(Example: For a 70 degree set line angle,
injection testing at 40 degrees would be
referred to as “off-angle”).
Zone time delay deviations:
±20 ms or 2%, whichever is greater
Sensitivity
Settings < 5/In Ω: (0.05 In*5/(setting*In)) ±5%
Settings > 5/In Ω: 0.05 In ±5%
Distance elements
Pick-up: Setting ±5%
Zone timer deviation:
20 ms or ±2%, whichever is greater
Timer accuracy: ±2 ms
Minimum trip level for IDMT elements:
1.05 × Setting ± 5%
Inverse time stages:
±40 ms or 5%, whichever is greater
Definite time stages:
±40 ms or 2%, whichever is greater
Repeatability: 5%
Sensitivity
Settings < 5/In Ω: (0.05 In*5/(setting*In)) ±5%
Settings > 5/In Ω: 0.05 In ±5%
Transient Overreach: Additional tolerance due
to increasing X/R ratios:
±5% over the X/R ratio from 1 to 90
Breaker fail timers accuracy:
20 ms or ±2%, whichever is greater
DIRECTIONAL AND NON-DIRECTIONAL
OVERCURRENT
(I>1, I>2, I>3 or I>4)
Accuracy
DT Pick-up: Setting ±5%
IDMT Pick-up 1.05 × Setting ±5%
DT reset: 0.95 × Setting ±2%
IDMT reset: 0.95 × Setting ±5%
Definite time stages:
±20 ms or ±2%, whichever is greater
Inverse time stages:
±40 ms or ±5%, whichever is greater
NEGATIVE SEQUENCE
OVERCURRENT
(I2>1, I2>2, I2>3 or I2>4)
Accuracy
Zone 1:
Pick-up: Setting ±5%
Reset: 0.95 × Setting ±5%
Definite time stages:
±40 ms or ±5%, whichever is greater
BROKEN CONDUCTOR DETECTION
Accuracy
(I2/I1)
Pick-up: Setting ±2.5%
Reset: 0.95 × Setting ±2.5%
Definite time stages:
±20 ms or 2%, whichever is greater