Settings P746/EN ST/G31
MiCOM P746 (ST) 4-
9
ST
Setting Range
Menu Text Default Setting
Min. Max.
Step Size
Zx CCTFAIL MODE Self-Reset Self-Reset / Alarm Latched / Blocking
Latched
Options for all the Zones differential element faulty calculation due to wrong position of
CB or isolator or CT failure are as follow:
– Self-Reset: The Zone is blocked and both the blocking and the alarm disappear as
soon as the Zone calculation is right.
– Alarm Latched: The Zone is blocked, the blocking disappears as soon as the Zone
calculation is right but the alarm disappears only after manual reset.
– Blocking Latched: The Zone is blocked and both the blocking and the alarm disappear
only after manual reset.
cctFailBlkMode Blocking/Phase Blocking/Phase
3phase Blocking
Options for all the Zones and Check Zone differential element faulty calculation due to
wrong position of CB or isolator or CT failure are as follow:
– Blocking / phase: If the faulty calculation occurs on one phase only, the Zone and/or
Check Zone is blocked for this phase only.
– 3phase Blocking: If the faulty calculation occurs on one phase only, the Zone and/or
Check Zone is blocked for the 3 phases.
CCTFAIL tReset 5.000 s 0.000 s 600.0 s 100.0 ms
Setting for the reset time delay of the circuitry fail reset option.
Voltage check Disabled Disabled / Enabled
To enable (activate) or disable (turn off) voltage check.
VT Connected to Zone 1 Zone 1 / Zone 2
If “voltage check” is enabled, used to indicate the voltage check zone.
Voltage Mode Phase-Neutral Phase-Phase / Phase-Neutral
Sets the voltage mode
V< Status Disabled Disabled / Enabled
To enable (activate) or disable (turn off) the undervoltage check.
V< Set 80.00 V 10.00 V 120.0 V 1.00 V
If “V< Status” is enabled, pickup setting for undervoltage element.
V< PickUpTimer 0.000 s 0.000 s 10.00 s 2.000 ms
If “V< Status” is enabled, sets the minimum pickup for undervoltage timer.
V1< Status Disabled Disabled / Enabled
To enable (activate) or disable (turn off) the first stage of undervoltage element.
V1< Set 80.00 V 10.00 V 120.0 V 1.00 V
If “V1< Status” is enabled, pickup setting for first stage of undervoltage element.
V1< PickUpTimer 0.000 s 0.000 s 10.00 s 2.000 ms
If “V1< Status” is enabled, sets the minimum pickup for first stage of undervoltage timer.
V2> Status Disabled Disabled / Enabled
To enable (activate) or disable (turn off) second stage of overvoltage. When activated,
V2> configuration is visible
To Next Page
Loading...