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High Pitch Noise generated from electrical sysetm |
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felix 05 May 12 at 06:23 |
The high pitch noise is found in our building. After observation, the findings are below:- 1. The volume of noise is gradual increasing and fading out with frequency. 2. The noise can be heard via the power distribution from 3/F to 35/F electrical room, some office area connected the same power source or some public area, where the busbar passing through. Some people said it's caused by harmonic and unbalance load. Do you have any same experienced and recommendation? Thanks.
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