GE P444 User Manual

Setting
P44x/EN ST/Hb
6
MiCOM P40 Agile
P442, P444 (ST) 4-2
9
Menu text Default setting
Setting range
Step size
Min
Max
GROUP 1 – EARTH FAULT O/C
IN>1 Function DT Disabled, DT, IEC S Inverse, IEC V Inverse,
IEC E Inverse, UK LT Inverse, IEEE M Inverse,
IEEE V Inverse, IEEE E Inverse, US Inverse,
US ST Inverse
Sets the first stage earth fault overcurrent (IN>1) characteristics. The conditions are
‘disabled’, definite time (DT) or inverse definite minimum time (IDMT).
IN>1 Directional Directional Fwd Non-Directional, Directional Fwd,
Directional Rev
Sets the directional control for the first stage overcurrent element.
IN>1 VTS Block Non directional Block, Non directional
When the directional control for the ‘IN>1’ is set, sets the Voltage Transformer Supervision
(VTS) directionality. The operation of the VTS will block the stage or will revert to Non-
directional on operation of the VTS.
IN>1 Current Set 0.2 x In 0.08 x In 10.0 x In 0.01 x In
Sets the value for the negative sequence current threshold.
IN>1 Time Delay 1 s 0 s 200 s 0.01 s
Sets the time delay associated with IN>1. The setting is available only when DT function is
selected.
IN>1 Time Delay VTS 0.2 s 0 s 200 s 0.01 s
Sets the VTS time-delay. The VTS alarm will occur if VT fault occurs during more than the
VTS time-delay.
IN>1 TMS 1 0.025 1.2 0.005
Sets the Time Multiplier Setting (TMS) to adjust the operating time of the IEC IDMT
characteristic.
IN>1 Time Dial 7 0.5 15 0.1
Sets the time dial settings, to adjust the operating time of the IEEE/ US IDMT curves. The
Time Dial is a multiplier of the standard curve equation, to achieve the required tripping
time. The reference curve is based on Time Dial = 1.
Care: Certain manufacturer’s use a mid-range value of time dial = 5 or 7. So; it may be
necessary to divide by 5 or 7 to achieve parity.
IN>1 Reset Char DT DT, Inverse
Setting that determines the reset / release time reset characteristics.
IN>1 tRESET 0 s 0 s 100 s 0.01s
Sets the Time Hold Facility. The tReset is displayed when ‘IN>1 Reset Char’ definite time is
selected (IEEE/US inverse curves).
IN>2 Function DT Disabled, DT, IEC S Inverse, IEC V Inverse,
IEC E Inverse, UK LT Inverse, IEEE M Inverse,
IEEE V Inverse, IEEE E Inverse, US Inverse,
US ST Inverse
Sets the second phase overcurrent threshold (IN>2) characteristics. The conditions are
‘disabled’, definite time (DT) or inverse definite minimum time (IDMT).
Settings are the same as for the first stage overcurrent element.

GE P444 Specifications

General

Brand	GE
Model	P444
Category	Protection Device
Language	English