Verification of power network wiring in "star" and "delta" connection graphical display of three phase voltage and current vector and direction of vector rotation.

Measure and recording of power network parameters voltages, currents, frequency, phase shifts, angles between voltages, power factors, active, reactive and apparent powers.

Digital and oscilloscope measurements with possibility of long time recording.

Energy meter testing on site functions of computing meter error directly in percentages with method of setting time of measurements or number of impulses and functions for verification of energy meter counters. Input in S0 standard is used for testing energy meters with impulse output. Miniature photo head CF**1 is used for automatic counting of meter rotor turns for testing Ferrari meters. Photo head CF**0 is used for automatic testing of meters with LED indicator and manual counting of rotor turns with using "start/stop" .

Testing of LV and MV instrument transformers directly on site: functions of computing transformer ratio error directly in [%], phase error and burden measurements of transformer.

  Measure of power quality according to IEC *********0:

• for voltage: voltage short/long interruptions, voltage dips, over voltage, harmonics, THD, interharmonics TID, signal voltage, flicker Pst i Plt, voltage asymmetry,
• for current: inrush current, harmonics, THD, interharminics TID,
• for power: harmonics.

Recording and analyzing of power quality according to the EN****0.