... noise,low loss 3)anti-theft,strong overload ability,safe ZGS11 series of prefabricated substation applies to 12KV ring power ... the transformer oil as the insulation and interrupter media. The ZGS11 series of prefabricated substation is developed on the basis of ... the latest foreign advanced technology and actual situation.S9 type ZGS11 series of prefabricated substation has the features of small size ...