Electrical Distribution Box making a humming noise and...
Apr 8, 2020 · The noise has been identified as coming from the electrical distribution box which is attached to a cement wall that runs up all three floors in my bedroom as a firewall.
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6 Frequently Asked Questions about “There is a sound from the base station distribution box”
What is audible substation noise?
Audible substation noise, particularly continuously radiated discrete tones (e.g., from power transformers), is the type of noise that the community may find unacceptable.
What causes noise in a substation?
The most noticeable audible noise generated by normal substation operation consists of continuously radiated audible discrete tones. Noise of this type is primarily generated by power transformers. Regulating transformers, reactors, and emergency generators, however, could also be sources.
Why is substation noise important?
In the southern side, the substation is close to the residential area and the substation noise could be regarded as the main noise contribution to the ambient environment. After the proper noise control schemes, the substation noise level decreased substantially and the total acoustic environment improved quite distinct.
Can a substation cause RF noise?
While continuously radiated noise is generally the most noticeable to substation neighbors, significant values of impulse noise can also accompany normal operation. Switching operations will cause both impulse audible and RF noise with the magnitude varying with voltage, load, and operation speed.
How acoustic field model is used in a substation?
SoundPLAN software is used here to establish the acoustic field model and predict the noise distribution before and after the proposed noise mitigation schemes. As an indoor substation, the noise influence of a transformer is simplified as an area acoustic source on the outer surface of the transformer room, seen in Fig. 11.
How does equipment design affect noise emissions at a substation property line?
Since power transformers, voltage regulators, and reactors are the primary sources of continuously radiated discrete tones in a substation, careful attention to equipment design can have a significant effect on controlling noise emissions at the substation property line.