... transformation and construction of rural and urban substation. YBM, YBP series of prefabricated substation comply with the SD320-1992 "box substation ... mental, composite or steel plate.Features of products1: The ZGS11 series of prefabricated substation is developed on the basis of combination ... capacity KVA100,125,160,200,250,315,400,500,630,800,10003No-load tap changer ±2*2.5%4Vector group Yn115Rated ...