German Standard DIN Transformer Bushings

1.TransformerBushings Requirement

Transformer bushing is an insulation bushing that leads the high and low voltage leads inside the transformer to the outside of the oil tank. It not only serves as a ground insulation for the leads, but also serves as a fixed lead. The transformer bushing is one of the current carrying components of the transformer. During the operation of the transformer, it passes through the load current for a long time. When a short circuit occurs outside the transformer, it passes through the short-circuit current. Therefore, there are the following requirements for transformer bushings:

(1) Must have specified electrical strength and sufficient mechanical strength.

(2) Must have good thermal stability and be able to withstand instantaneous overheating during short circuits.

(3) Small in appearance, small in quality, good in sealing performance, strong in versatility, and easy to maintain.