GE P444

Setting
P44x/EN ST/Hb
6
MiCOM P40 Agile
P442, P444 (ST) 4-
35
Menu text Default setting
Setting range
Step size
Min Max
GROUP 1 – VOLT PROTECTION
OVERVOLTAGE
V> Measur't Mode Phase-Neutral Phase-phase, Phase-neutral, Independent
Select the overvoltage protection to operate from a phase to phase voltage, phase to earth
measurement or Independent.
V> % Hysteresis 2 0.1 2 1
Reset Ratio of all Overvoltage Stages.
V>1 Function DT Disabled, DT, IDMT
Select the first overvoltage threshold as either Inverse Definite Minimum Time (IDMT),
Definite Time (DT) or disabled (see setting guidelines, section 2.4). The three following
submenus (Voltage, time delay and time multiplier setting) are visible according to this
setting.
V>1 Voltage Set 75V 60V 185V 1V
Sets the pick-up setting for first stage overvoltage element.
V>1 Time Delay 10s 0s 100s 0.01s
Setting for the operating time-delay for the first stage definite time overvoltage element.
V>1 TMS 1 05 100 0.5
The following formula defines the IDMT characteristics: t = K / (M – 1),
where K = Time Multiplier Setting (TMS), K = Operating time (in secon
d) and M = measured
voltage / relay setting voltage (V>).
V>2 Status Enabled Disabled, Enabled
Enable or disable the second overvoltage 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 90V 60V 185V 1V
V>2 Time Delay 0.5s 0s 100s 0.01s
V>3 Status Enabled Disabled, Enabled
Enable or disable 3
rd
overvoltage 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 100V 60V 185V 1V
V>3 Time Delay 1s 0s 100s 0.01s
V>4 Status Enabled Disabled, Enabled
Enable or disable 4
th
overvoltage 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 105V 60V 185V 1V
V>4 Time Delay 1s 0s 100s 0.01s
V>1 Measur't Mode Phase-Neutral Phase-phase, Phase-neutral
This setting is to select the measurement mode Phase-Phase or Phase-Neutral for stage 1
of the Overvoltage Protection.
V>2 Measur't Mode Phase-Neutral Phase-phase, Phase-neutral
This setting is to select the measurement mode Phase-Phase or Phase-Neutral for stage 2
of the Overvoltage Protection.