... excitation Tap-changing Transformer 1)Primary side voltage:11KV~330KV 2)CE,CB,ISO9001,14001,IEC 3)OEM Oil Immersed Non- ... excitation Tap-changing Transformer Verified Information This information is Verified by ... Produced(Previous Year) Circuit breaker, KWH meter, Power supply, Transformer, Switch cabinet, Explosion-proof products USD46,000,000 Per Month ...