4.6.2 Integration Period Processing

The Metrology firmware collects the momentary interval raw data approximately each integration period (by default 1 second, so having 50 or 60 power line cycles) and converts them into scaled and integrated quantities.

The Metrology firmware supports a wide range of measurement quantities (and accumulations) including active and reactive energy, supply voltage and frequency, apparent power, power factor. Some quantities are derived from the fundamental plus harmonics, while other quantities are derived from the fundamental only:

• Total Energy and individual phases with harmonics (Wh)
• Total Quadergy and individual phases with harmonics (VArh)
• Power factor
• Total Harmonic Distortion (Power, Current and Voltage)
• Line Voltage Monitoring (Frequency, Sag, Voltage line to Line phase)
• Metrology status (On/Off, OK/Error, Swell/Sag Alarm)