... YBP series of prefabricated substation is the compacted sets of power distribution equipment combined by the high-voltage electrical equipment, transformer ... ring distribution system, and can also be applied in the double power distribution system and radiation terminals distribution system. It is ... 125,160,200,250,315,400,500,630,800,10003No-load tap changer ±2*2.5%4Vector group Yn115Rated insulation ...