S11 35KV 250kva oil immersed high voltage transformers China Manufacturer Details

Tongrun Photoelectron is mainly engaged in the processing, manufacturing, and sales of Transformer Accessories, Buchholz Relays, Tap Changer, oil level gauges, Butterfly Valve, Moisture Absorber, Pressure Relief Valve, Cross Flow Cooling Fan, Bimetal Thermometer， Epoxy Resin Insulator, and other industrial accessories.

Three-phase Oil oil-immersed transformer uses a filled oil-sealed corrugated oil tank shell, with its elasticity to adapt to the expansion of the oil in a permanently sealed oil tank; oil-immersed transformer has been widely used in distribution equipment.

Compared with the ordinary oil-immersed transformer, the oil storage tank is canceled. The corrugated sheet in the corrugated tank has an elastic automatic adjustment and compensation function, so the change of the oil amount can be adjusted. Isolating the transformer from the air can avoid the deterioration of the oil quality and the aging of the insulation material, thereby improving the reliability of operation, and no maintenance is required during normal operation, saving maintenance costs.

The iron core of the transformer is stacked with high-quality cold-rolled silicon steel sheets, which effectively reduces no-load loss and no-load current. At the same time, through the binding process of the iron core, the tightness of the iron core is ensured, and the noise level is reduced during operation.

The transformer is mainly composed of an iron core, winding, fuel tank, insulation casing, tap switch, etc.

A. The low-voltage winding of the oil-immersed transformer is designed as a cylinder structure, while the high-voltage winding is designed as a multi-layer cylinder structure. This design makes the winding turn distribution balanced, effectively reduces the magnetic leakage, and improves the mechanical strength and short-circuit resistance.

In b, the core and the winding each adopt fastening measures. The fastening parts, such as the height and the low-pressure lead, are equipped with loose nuts, which can withstand the shock of transport.

c. The coil and the iron core are vacuum-dried, and the transformer oil adopts the vacuum oil filtration and oil injection process to minimize the moisture inside the transformer.

d. The tank design uses a corrugated sheet with a breathing function to adapt to the oil volume change caused by the temperature change, so there is no need to set up another oil storage tank, which greatly reduces the overall height of the transformer.

e. By replacing the oil storage tank with a corrugated sheet, the transformer oil is completely isolated from the outside world, effectively preventing the infiltration of oxygen and water and protecting the insulation performance from degradation.