Reasons for loud sound of dry-type transformer

Dry type transformer is an important type of transformer. At the same time, it will often have noise in the process of use. The increase of noise of dry-type transformer is an important fault type. In normal use, pay attention to the main reasons for the increase of noise of dry-type transformer, Next, let's analyze the main reasons for the increase of noise:

The possible reasons for high noise of dry-type transformer are as follows:

1. Caused by voltage problem

If the voltage is high, the transformer will be over excited, and the noise will be increased and sharp, which will directly and seriously affect the noise of the transformer.

2. Caused by resonance problems of fan, shell and other parts

The resonance of fan, shell and other parts will produce noise, which may be mistaken for the noise of transformer.

3. Problems with installation

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

4. Impact of installation environment

The operating environment affects the noise of the transformer, and the adverse environment increases the noise of the transformer by 3dB ~ 7dB.

5. Vibration of bus bridge

Because there is a large current passing through the side-by-side bus, the bus vibrates due to the leakage magnetic field. The vibration of bus bridge will seriously affect the noise of transformer and increase the noise of transformer by more than 15dB, which is difficult to judge. General users and installation units will mistakenly think it is the noise of transformer.