The DIRIS A20 model provides measurement of RMS values for 3 phase current plus neutral, phase to phase and phase to neutral voltage, frequency, total active, reactive and apparent power, total power factor as well providing average and maximum values of current and power. It also measures the active and reactive engergy in 4 quadrants. …more

The DIRIS A40 model provides measurement of RMS values for 3 phase current plus neutral, phase to phase and phase to neutral voltage, frequency, total and per phase active, reactive and apparent power, total and per phase power factor as well providing average and maximum values of current, phase to phase and phase to neutral voltage and frequency, and total active and reactive and apparent power. …more