Mode of operation : Periodicity running (3 phase full load or 2 phase 6kvA full loading 1 hour, no loading 1 hour), continuous running: at least 4 hours. ï??ï? Wave form distortion rate: â?¤5% (no load line voltage). ï??ï? setting range of output voltage: when 125Hz, 20  240V Continuous adjusting ( stabilivolt running under given voltage condition). ï??ï? Noise ï¼?â?¤108dB(A) (Voice level)   The CT, VT Test we can supplied , including CT, VT Routine Test, CT, VT Accuracy , Error Measurement Test, we have rich experience and perfect after-sale service. If you are interested in , you can call us at any time.