Voltage Transformer 1) Primary Voltage: 6.6kv, 11kv, 2) Secondary Voltage: 110V,220V,230V... 3) ISO 9001 certificate Voltage Transformer1) Primary Voltage: 6.6kv, 11kv,2) Secondary Voltage: 110V,220V,230V...3) ISO 9001 certificatePlease contact us for more details. Oil Voltage Transformer, 6.6kv, 11kv, JDJ series