USS is a prefabricated secondary substation with the combination of minimum voltage & switchgear, low voltage switchgear, Distribution Transformer and associated components of metering and protection, all fitted in one compact unit in accordance to the standards. Model No : USS V12 O Rated Voltage & Rated Current: 12kV, 630A Up to 2000A Frequency : 50Hz Insulation Level: 28kV 75kV Peak IEC 62271-202, IEC 1330(1995) and IS 14786:2000 Standards Degree of Protection: IP4X & 5X