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Dry-type transformer noise solution

7/12/2019 16:32:00 click:
Transformer noise belongs to low-frequency noise and is one of the common noise sources in residential buildings and public buildings. For dry-type transformer noise, vibration reduction and sound insulation measures are usually used to control it, which can achieve better noise reduction performance. Look at the dry-type transformer noise management scheme.
I. Transformer vibration treatment Using a vibration damping table for the transformer to perform low-frequency vibration isolation control can control the transmission of vibration below 0.2%, thereby reducing the structural noise of the transformer.
Second, the bus bar vibration reduction processing bus bar soft connection processing. For the hard-installed low-voltage busbars, the copper bars of the trough rack, electromagnetic noise and vibration may be transmitted to the building structure through the joints, and it needs to be changed to a flexible wire connection during the noise reduction process.
3. The ground plate vibration reduction treatment changes the fixed and hard connection between the subway plate and the transformer. The original vibration of the transformer will be transmitted by the iron plate to the steel bar in the cement and generate low-frequency noise, so it needs to be transformed into a soft connection.
Fourth, the bridge vibration reduction treatment Change the hard connection between the bus bridge and the transformer, and do vibration reduction treatment at the bridge.
Fifth, the sound insulation treatment of the machine room The sound insulation treatment of the transformer room is mainly from three aspects: doors and windows, ventilation vents, and the ground. The use of sound insulation products such as soundproof doors and windows, mufflers, and floating floor damping pads to achieve sound insulation .
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