Measures for Noise Control of Various Types of Transformers

Click: 165 Date: 2019-01-15 13:44:00 Information Source: NORYA

Because the masses are not familiar with the common knowledge of transformers, the noise from transformers will cause uneasiness among the people around them, and complaints about transformer noise also occur from time to time. So how to deal with the noise problem of transformer? Noah Electric has given the tutorials. Collect them now.



1. Measures for Noise Control of Transformers in Independent Distribution Rooms

First of all, the maintenance of Transformers after power failure, including replacement of old transformer oil, dust removal of transformers and inspection of transformer fasteners, etc. Secondly, the transformer foundation is strengthened and the isolation device is installed. Finally, the weakness of the distribution room is strengthened by sound insulation, and the ordinary window is replaced by the muffling ventilation window (taking into account the heat dissipation requirements of the transformer). Replace ordinary iron door with metal or wood fire-proof sound-proof door. To achieve the above three points, the effect of noise reduction has been very good. However, considering the strong penetration of low-frequency noise of transformers, sound absorption treatment can be carried out in the distribution room if conditions permit, which can effectively reduce the energy of noise.



2. Noise Control Method of Box Transformer

First of all, the maintenance of Transformers after power failure, including replacement of old transformer oil, dust removal of transformers and inspection of transformer fasteners, etc. Secondly, the transformer foundation is strengthened and the isolation device is installed. Finally, because of the thin case of box transformer, it is difficult to reinforce the case of box transformer with sound insulation, and the space position is less. Therefore, the noise control method of box change is to install sound barrier or sound insulation cover on its outer side. Generally, after the above treatment, the noise of the box transformer can basically meet the requirements of the national standard. If the sound insulation cover needs to consider the heat dissipation of the box transformer, it generally needs the air intake system and the air exhaust system.



3. Measures for Noise Control of Transformers in Underground Distribution Rooms

Firstly, the vibration of transformer is blocked, including replacing the low-voltage output bus bar of transformer, tightening the transformer fastener, separating the transformer shell from the transformer body, installing rubber pad or shock absorber at the bottom of transformer, changing the grounding flat iron to grounding braided belt, etc. Secondly, if sound insulation treatment is needed for the distribution room, sound insulation will be installed around the distribution room. Or sound-absorbing materials to isolate and absorb noise energy.



The problem of noise disturbance to the people can be effectively solved by different comprehensive sound insulation treatment of transformer noise in different distribution modes.

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