How to eliminate transformer noise

Aiming at the noise pollution of transformer, how to effectively eliminate the noise of transformer and what noise reduction measures are there? Through continuous time and research and development, Jingyuan has developed a noise reduction and vibration reduction platform specifically for the existing defects of transformers, and applied for national patents. By using nonlinear vibration-free noise reduction technology, the problems of vibration and low frequency disturbing people of traditional vibration reduction equipment and transformers have been solved, and the indoor noise of residents has reached the national standard. Specific elimination measures are as follows:

Vibration isolation measures

In order to reduce the structural noise transmitted by transformer vibration, the unit adopts high-efficiency low-frequency vibration isolation treatment. The static source low-frequency sound insulation platform can control the vibration transmission rate below 0.2%. This measure is reflected in that the noise propagation is reduced by about 27 decibels, and the environmental sound of the upstairs residence is affected by about 30 decibels through the attenuation of the building structure again.

reinforcement measure

In the case of extremely high noise, the appropriate sound absorption structure can be selected according to the noise spectrum of the distribution room. We choose a low-frequency sound absorption structure that combines micro-perforated plate and porous sound absorption material, which can reduce the noise transmission by about 1~2 dB. Soft connection treatment of busbar: low-voltage busbar is rigidly installed for the discharge of copper busbar of trunking frame. Electromagnetic noise and vibration may spread to the building structure through the busbar, so it is necessary to change to soft wire connection in the middle of noise reduction treatment, and the staff of power supply department need to cooperate.

Key measures

When adjusting the voltage sharing of transformer core coil, it is necessary to check the integrity of high voltage leakage discharge protection.

Finally, we show the noise reduction effect of the transformer.

Before general transformer noise reduction, the indoor noise value of neighboring owners will reach about 35dB(A), and the continuous low-frequency noise will cause residents' discomfort such as irritability, nausea and dizziness.

After noise reduction, it can be guaranteed that all households affected by transformer noise can reach the highest national standard (that is, excluding the influence of non-elevator noise, indoor noise value at night)