GE P444 User Manual

P
44x/EN ST/Hb6
Setting
(ST) 4
-34 MiCOM P40 Agile
P442, P444
Menu text Default setting
Setting range
Step size
Min Max
GROUP 1 – VOLT Protection
UNDER VOLTAGE
V< Measur't Mode Phase-Neutral Phase-phase, Phase-neutral
Select the undervoltage protection to operate from a phase to phase voltage or phase to
earth measurement.
V<1 Function DT Disabled, DT, IDMT
Select the first undervoltage threshold as either Inverse Definite Minimum Time (IDMT),
Definite Time (DT) or disabled. The three following submenus (Voltage, time delay and time
multiplier setting) are visible according to this setting.
V<1 Voltage Set 50 V 10 V 120 V 1 V
Sets the pick-up setting for first stage undervoltage element.
V<1 Time Delay 10 s 0 s 100 s 0.01 s
Setting for the operating time-delay for the first stage definite time undervoltage element.
V<1 TMS 1 0.5 100 0.5
The following formula defines the IDMT characteristics: t = K / (1 – M),
where K = Time Multiplier Setting (TMS), K = Operati
ng time (in second) and M = measured
voltage / relay setting voltage (V<).
V<2 Status Disabled Disabled, Enabled
Enable or disable the second undervoltage threshold. The voltage and time-delay (following
submenus) are settable when V<2 status is enabled. Stage 2 is DT only.
V<2 Voltage Set 38 V 10 V 120 V 1 V
V<2 Time Delay 5 s 0 s 100 s 0.01 s
V<3 Status Disabled Disabled, Enabled
Enable or disable 3
rd
undervoltage threshold. The voltage and time-delay (following
submenus) are settable when V<3 status is enabled. Stage 3 is DT only.
V<3 Voltage Set 30 V 10 V 120 V 1 V
V<3 Time Delay 1 s 0 s 100 s 0.01 s
V<4 Status Disabled Disabled, Enabled
Enable or disable 4
th
undervoltage threshold. The voltage and time-delay (following
submenus) are settable when V<4 status is enabled. Stage 4 is DT only.
V<4 Voltage Set 25 V 10 V 120 V 1 V
V<4 Time Delay 1 s 0 s 100 s 0.01 s
2.13.2 Overvoltage protection
The following table shows the overvoltage section of this menu along with the available
setting ranges and factory defaults. As can be seen, the setting cells for the overvoltage
protection are identical to those previously described for the undervoltage protection.

GE P444 Specifications

General

Brand	GE
Model	P444
Category	Protection Device
Language	English