Shenzhen Guangming Power Supply Bureau Mingan Garden Low Noise Case

       The operating noise of the open ventilated 3D wound core transformer is lower than 45dB(A), and can be lower than 38dB(A), reaching the environmental noise limit of class 0 acoustic environment functional area lower than 40dB(A) at night^[1]，It is almost silent, which effectively solves the problem of NIMBY avoidance caused by noise disturbance.

       Shenzhen Guangming Power Supply Bureau purchased HAIHONG 2 sets of 3D wound core open  ventilated dry-type transformers SGB11-RL-1000/20 on December 7, 2018, to solve the original 2 sets of epoxy resin in the electric room of Ming'an Garden Community, Guangming District, Shenzhen noise nuisance problem. After replacing the 3D wound core with open ventilated dry-type transformer, the noise of the electric room dropped from 71.6dB to 44.7dB, allowing the residents of the community to live a quiet, peaceful and happy life before the Spring Festival in 2019, and received unanimous praise from the residents of the community.

Note: [1] Refer to GB 3096-2008 Environmental Quality Standard for Noise. [2] The case includes ambient noise.