11 KV OUT DOOR OIL COOLED CT PT Combined Unit       Product Range Type :Out Door Oil Cooled   CT PT Combined Unit        11 KV        22 KV        33 KV   CT PT Combined Unit (Dual Core)        11 KV        22 KV        33 KV   Instrument Transformer           Current Transformers        11 KV, 22 KV & 33 KV        110 KV & 132 KV            Potential Transformers        11 KV, 22 KV & 33 KV        110 KV & 132 KV    Distribution Transformers        11 KV, 22 KV & 33 KV            up to 5 MVA   Power Transformers        11 KV, 22 KV, 33 KV, 66 KV &            up to 50 MVA System Frequency :50Hz Normal System Voltage :11kV Highest System Voltage :12kV Insulation Level :28/75 kV       CURRENT TRANSFORMER:     Primary Current :Up to 300A Secondary Current :5 A & 1 A Burden :5VA,10VA &15VA CT Acc. Class :0.2,0.5,0.2s,0.5s & 1.0       POTENTIAL TRANSFORMER:     Primary Voltage :11000V Secondary Voltage :110V Burden :15VA,30VA &50VA PT Acc. Class :0.2, 0.5 & 1.0 Phase :3 STC Rating :100 times full load for 1.0 Sec. Standard :IS 2705 & IS 3156