... 12KV ring power supply, dual power supply or the terminal power supply system to use as the substation, distribution ... "prefabricated substation".Technical parametersSerial No.ItemUnitParameters1Rated voltagePrimaryKV12SecondaryKV0.4,0.232Rated capacity KVA100,125,160,200,250,315,400 ... ,630,800,10003No-load tap changer ±2*2.5%4Vector group Yn115Rated insulation levelLightning impulse withstand voltage ( ...