ION9000 network analyzers. 4-quadrant measurement: import and export for active and reactive energy, active, reactive and apparent energy meters per phase and separate active energy meters with tariff selection via weekly timer, communication or contact. Current, voltage (average and per phase), current average, active, reactive and apparent power, power factor (total and per phase). Power averages, frequency, min. and max. values of the instantaneous values, max. values of the current and power averages. Harmonic content THD I, THD U and TDD. Harmonic analysis: measured values per phase with bar chart. up to the 63rd harmonic on the device display. up to the 511th harmonic via software (1024 measured values per period).