How to deal with the low frequency noise of transformer

1. First, the main equipment of the transformer is subjected to vibration reduction. Usually, an efficient shock absorber is installed under the transformer to reduce the vibration transmissibility of the transformer, thus reducing the transmission of low-frequency noise to the building structure.

2. Secondly, for the cascade vibration reduction treatment in the transformer, the usual rigid connection will increase the vibration propagation, so it is recommended to use soft connection and elastic connection to reduce the transmission effect of vibration.

3. The transformer is equipped with grounding equipment, and the vibration of the transformer will be transmitted to the building structure through the grounding wire, so try to avoid using rigid grounding pieces. Use soft grounding connection to reduce the transmission of transformer vibration.

4. change the hard connection between the bus bridge and the transformer, and do vibration reduction treatment at the bridge.

5. The low-frequency noise of the transformer is solved from the source, and sound insulation is needed from the transmission path to improve the noise reduction effect. The usual practice is to do sound insulation decoration of transformer room to improve the sound insulation ability of the room itself, and generally use sound absorption materials to lay on the wall. Select materials according to requirements.