... maintenance and mobile YBM BOX SUBSTATION(Non-Metallic) YBM, YBP series of prefabricated substation is the combination of the HV electrical ... receive and distribute the power. YBM, YBP series of prefabricated substation is complete set, small sized, compacted structure, running safely ... standard of GB/T 17467-1998 (HV/LV prefabricated substation). The shell is made of non-metal, composite board ...