Phase Under Voltage

The phase under voltage protection function generates the following signals:

Alarm: Any of the line-to-line voltage goes below the alarm level.
Trip: Any of the line-to-line voltage goes below the pickup level for the specified time delay.

NOTE: This function enables after 500 ms once the voltage is detected.

The phase under voltage protection function has the following configurable settings:

Parameter	Setting range	Default value
Function	Disable Alarm Trip Alarm + Trip	Trip
Pickup	20–100% of nominal voltage in step of 1%	80% of nominal voltage
Time Delay	0.1–6000.0 s in step of 0.1 s	10 s
Alarm Level	20–100% of nominal voltage in step of 1%	80% of nominal voltage
Reset Mode	Reset key DI Communication Auto	Auto
Auto-Reset Delay (applicable only if Reset mode is Auto)	0.0–6000.0 s in step of 0.1 s	0 s