GE P444

P44x/EN TD/
Hb6
Technical Data
(TD) 2
-10
MiCOM P40 Agile P442, P444
DIRECTIONAL AND NON-DIRECTIONAL
EARTH FAULT PROTECTION
(IN>1, IN>2, IN>3 or IN>4)
Accuracy
DT Pick-up: Setting ±5%
IDMT Pick-up 1.05 ×Setting ±5%
Drop-off: 0.95 × setting ±5%
Definite time stages:
±20 ms or ±2%, whichever is greater
DT reset: 0.95 × Setting ±2%
Inverse time stages:
40 ms or ±5%, whichever is greater
IDMT reset: 0.95 × Setting ±5%
AIDED DIRECTIONAL EARTH FAULT
(D.E.F.) PROTECTION
Accuracy
Zero Sequence Polarisation
pick-up: Setting ±10%
with relay characterist angle = ±90°
Negative Sequence Polarisation
pick-up: Setting ±5%
THERMAL OVERLOAD
Accuracy
Thermal alarm pick-up:
Calculated trip time ±10% ∗
Thermal overload pick-up:
Calculated trip time ±10% ∗
Cooling time accuracy
±15% of theoretical
Repeatability: <5%
∗ Operating time measured with applied
current of 20% above thermal setting.
NEUTRAL DISPLACEMENT/ RESIDUAL
OVERVOLTAGE
(VN>1, VN>2)
Accuracy
DT Pick-up: Setting ±5%
IDMT Pick-up: 1.05 x setting ±5%
Definite time operation:
±20 ms or 2%, whichever is greater
Instantaneous operation: <50 ms
IDMT characteristic shape:
±40 ms or 2%, whichever is greater
Reset: 0.95 × Setting ±5%
UNDERCURRENT PROTECTION
(I<1,I<2)
Accuracy
Pick-up:
±10% or 0.025 In, whichever is greater
Drop-off: ±5%
Timer accuracy:
±40 ms or 2%, whichever is greater
Reset: <15 ms
UNDERVOLTAGE
(V<1, V<2, V<3 or V<4)
Accuracy
DT Pick-up: Setting ±2%
IDMT Pick-up: 0.95 × Setting ±2%
Definite time operation:
±20 ms or 2%, whichever is greater
IDMT characteristic shape:
±40 ms or 2%, whichever is greater
Reset: 1.05 × Setting ±5%
OVERVOLTAGE
(V>1, V>2, V>3 or V>4)
Accuracy
DT Pick-up: Setting ±1%
IDMT Pick-up: 1.05 x Setting ±2%
Definite time operation:
±20 ms or 2%, whichever is greater
IDMT characteristic shape:
±40 ms or 2%, whichever is greater
Reset: 0.98 to 0.995 × Setting ±5%
CIRCUIT BREAKER FAIL AND
UNDERCURRENT
Accuracy
Pick-up:
±10% or 0.025
In, whichever is greater
Operating time: <12 ms
Definite time operation:
±20 ms or 2%, whichever is greater
VOLTAGE TRANSFORMER
SUPERVISION
Accuracy
Fast block operation: <1 cycle
Fast block reset: <1.5 cycles
Definite time operation:
±20 ms or 2%, whichever is greater