The S11-M series oil-immersed power transformer is a fully sealed, energy-efficient product designed for voltages up to 35kV, with capacity ranges from 50kVA to 1600kVA (or up to 63,000kVA, depending on the model). This series of transformers features low no-load loss and low no-load current, with load losses that do not exceed a positive deviation of 3% based on national standards. Under continuous rated capacity steady-state operation, the top oil temperature rise is limited to 60K, and the average winding temperature rise is 65K. The S11-M transformer complies with standards such as GB1094.12, GB1094.35, GBT6451, GBT15164, GB309693, JBT3837, and other relevant standards. After normal transportation, the transformer does not require core lifting inspection and can directly undergo the dismantling and inspection of components. Once qualified, it can be put into operation.