Derived Values

The controller uses the measured values to derive many system measurements including:

• Earth current

  • The vector sum of the three phase currents on three phase switchgear.

• Frequency

  • The frequency of the voltage on the source and load sides of the switchgear.

• Phase to phase voltages

  • Calculated from the phase to earth voltages.

• Total and per phase power (kW, kVA, kVAR)

  • Calculated from the phase currents and phase to earth voltages according to the designated power direction.

• Total and per phase PF

  • Calculated from the phase relationship between current and voltage phasors.

• Harmonics

  • Second to sixteenth harmonic plus total harmonic distortion for voltage and current.

• Sequence components

  • Positive Phase Sequence (PPS), NPS and Zero Phase Sequence (ZPS) voltages as well as PPS and NPS currents.

The PowerLogic ADVC Controller can also measure the internal values listed below:

• CAPE temperature

• Switchgear temperature on PMSet U Series and PMSet UR Series Circuit Breakers

• Auxiliary voltage

• Gas pressure on RL Series switchgear

• Battery voltage