PKR39809-02

LOP Protection Operation

When the voltage on one or two phases drops below the LOP Voltage setting, the LOP Timeout timer starts to run.

If the voltage on at least one of those phases stays below the LOP Voltage setting until the LOP Timeout timer expires, LOP protection will operate according to the settings applied, either:

  • LOP Off

  • LOP Trip

  • LOP Alarm

When LOP protection trips the switchgear the phase or phases that caused the trip will be logged in the Event Log and identified by the Trip Flags.

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