PowerLogic™ PM5500 / PM5600 / PM5700 series – User manual PDF
HRB1684301-16

Phase loss alarm

The phase loss alarm is an under setpoint alarm that monitors the voltages on a 3-phase system and triggers the alarm when one or two phases fall below the pickup setpoint setting and remain there long enough to satisfy the pickup time delay period.

When all of the phases rise above the dropout setpoint setting and remain there long enough to satisfy the dropout time delay period, the alarm condition is set to OFF.

*In 1PH3W LL with N system configuration, if any one phase of V L-N falls below the 20 V pickup setpoint setting and remain there long enough to satisfy the pickup time delay period, the phase loss alarm is triggered.

NOTE: *In 1PH system configuration, no phase loss alarm is triggered because it is considered as no load condition.

*In 3PH3W system configuration, if any two phases of V L-L falls below the pickup setpoint setting and remain there long enough to satisfy the pickup time delay period, the phase loss alarm is triggered.

*In 3PH4W system configuration, if any two phases of V L-N falls below the 20 V pickup setpoint setting and remain there long enough to satisfy the pickup time delay period, the phase loss alarm is triggered.

*Available only in latest firmware versions:

  • PM5560 / PM5562 / PM5563 / PM5580 meter models: 4.0.0 and above

  • PM5570 / PM5660 / PM5760 meter models: 6.0.0 and above

  • PM5650 meter model: 4.10.0 and above

  • PM5561 meter model: 12.0.0 and above

  • PM5661 / PM5761 meter models: 14.0.0 and above

  • PM5570L / PM5660L / PM5760L meter models: 6.0.0 and above

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