The Carlo Gavazzi WM20 Power Analyzer calculates load operating hours, the average and maximum system and phase power vallues, and current and voltage THD (total harmonic distortions) up to the 32nd harmonic. The unit is equipped with detachable terminals and sealable terminal caps, and can be configured via keypad, UCS configuration software, and OptoProg via the optical port. The LCD display also allows for viewing measurements.