The power output of the device is all true voltage and current values, and the waveform is a standard sine wave with a frequency of 50-60Hz; It can truly and effectively simulate the true state of the transformer and comply with relevant national maintenance regulations. The maximum voltage output for a single machine with 220V input is 0-1000V, and the maximum current output for a single machine is 0-600A, making it very suitable for on-site maintenance.