Shenzhen Longgang Power Supply Bureau Peninsula 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 Longgang Power Supply Bureau applied a 3D wound core open ventilated dry-type transformer SGB11-RL-1250/10 from HAIHONG on November 14, 2019 to solve the original epoxy resin cast dry transformer in the electric room of Peninsula Garden Community, Longgang, Shenzhen. Noise nuisance problem. After replacing HAIHONG's 3D wound iron core with open ventilated dry transformer, the noise was reduced from 65.9dB to 42.5dB, which was well received by residents and effectively solved the problem of residents' noise complaints. 

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