... reliability. 2 Nice appearance, economic and maintenance free 10kV, 800~4000KVA Voltage Oil-immersed TransformerModel No.: S11 Series 10kV ... ,800~4000KVAFeatures:Superior performance with significant energy saving effect. No ... products2. Training Customer staff.3. Periodical customer visit. 10kV,800~4000KVA S11 Series Power Transformer Oil type