Oil-immersed transformer performance characteristics

a, oil-immersed transformer low-voltage winding except for small capacity using copper wire, generally use copper foil winding shaft cylinder structure; high-voltage winding using multi-layer cylinder structure, so that the winding of the turn distribution balance, magnetic leakage is small, high mechanical strength, strong short-circuit resistance.

b , The core and winding are each fastened with self-locking anti-loosening nuts in the fastening parts of the high and low voltage leads, and the structure of the non-hanging core is adopted to withstand the shock of transportation.

c , The coil and core are vacuum dried, and the transformer oil adopts the process of vacuum oil filtration and oil injection, so that the moisture inside the transformer is reduced to a minimum.

d , The oil tank adopts corrugated sheet, which has the function of breathing to compensate the volume change of oil caused by temperature change, so the product has no oil storage cabinet, which obviously reduces the height of transformer.

e , Since the corrugated sheet replaces the oil storage cabinet, the transformer oil is isolated from the outside world, so it effectively prevents the oxygen and water from entering and causing the insulation performance to drop.

f , According to the above five performance points, ensure the oil-immersed transformer does not need to change oil within the normal operation, which greatly reduces the maintenance cost of the transformer, and at the same time prolongs the service life of the transformer.

Oil-immersed transformer advantages

1、Transformer oil insulation performance, good thermal conductivity, while the transformer oil is cheap.

2, can solve the transformer large capacity heat dissipation problems and high voltage insulation problems.

Disadvantages of oil-immersed transformers

1, transformer oil is flammable, when encountered with flame may burn, explosion

2、 Transformer oil is harmful to human body

3, transformer oil needs to be checked regularly

4, oil-immersed transformer sealing performance is poor and should be aging, oil leakage in the operating place is serious, affecting the safe operation of equipment, while affecting the environment

5, oil-immersed transformer insulation level is low, according to the A-class insulation design, manufacturing