Feature

　　1. The tank adopts corrugated plate or Expansion type radiator without oil conservator, thus the height of the transformer is reduced.

　　2. The transformer oil and insulators are separated from the air and water outside, and thus the aging of transformer oil and insulators is slowed down, The oil tank is sealed with high performance oil resistant rubber wgich can be used for 30 years without the on-site core-suspension inspection, thus reducing operation and maintenance cost. It is good for maintenance at inconvenient places. The no-load loss of S10-M type is20% lower than S9-M type, and S11-M type is 30% lower than S9-M type. High reliability, advanced level of performances, reasonable economical indicators.