Reasons for the loud noise of cast resin encapsulated transformers

Dry-type cast resin encapsulated transformers are an important type of transformers, and they often experience noise during use. The increase in noise of dry-type transformers is an important type of fault. In normal use, we should pay attention to the main reasons for the increase in noise of dry-type transformers. Next, let's analyze the main reasons for the increase in noise.

The possible reasons for the high noise of cast resin encapsulated transformer are as follows:

1. Caused by voltage problems

High voltage will make the transformer over-excited, and the noise will increase and sharpen, which will directly and seriously affect the noise of the transformer.

2. Caused by resonance problems of fans, casings and other components

The resonance of the fan, casing, and other components will generate noise, which may be mistaken for the noise of the transformer.

3. Installation problems caused by

Poor installation will aggravate the vibration of the transformer and amplify the noise of the transformer.

4. The influence of the installation environment causes

The operating environment affects the noise of the cast resin encapsulated transformer, and the unfavorable environment increases the noise of the transformer by 3dB to 7dB.

5. The problem of the vibration of the busbar bridge leads to

Due to the large current passing through the parallel busbars, the busbars vibrate due to the leakage magnetic field. The vibration of the busbar bridge will seriously affect the noise of the transformer, which will increase the noise of the transformer by more than 15dB, which is difficult to judge. Generally, users and installation units will mistake it for the noise of the transformer.