1.Input voltage: 220V,380V or be customized
2.Output voltage: 6V,12V,110V or be customized
3.Capacity range: 25VA-100KVA above
4.Efficiency: ≥95%
5.Insulation class: B or above as customized
6.Type of cooling system: natural air drying or with fans cooling for IP20
7.Waveform distortion: no additional waveform distortion
8.Function: indication of input voltage, output voltage and current
9.Protection: over-current protection
10.Winding conductor material: usually use copper, can use aluminum if you have special requirements
11. Can operate itself without anybody attending for a long term
12.Electric strength: no breakdown or flashover phenomenon under power frequency sine voltage of 2000V for 1min
13.Overload capability: for 1min under two times of rated current