Decrease of noise
Decrease of noise
(OP)
Please, would you let me know any method of decreasing noise level of power transformer 40MVA ONAN 123kV to 60dB (A)
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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RE: Decrease of noise
Although a transformer may have passed audible sound level tests in the shop, this is no guarantee that it will perform likewise in the field. Noise levels may increase after installation in the field due to: improper installation, room acoustics (if indoors), loosening of parts during shipment, etc.
Although you will never eliminate the noise (due to magnetostriction), sound levels may be reduced by one or more of the following methods:
1. use of sound absorbing materials on the walls to minimize the formation of standing waves
2. use of sound absorbing materials to form a barrier between transformer housings
3. shock mounting of components susceptible to vibration
4. shock mounting of entire transformer to foundation
5. installation of audio-dampening system
6. inspection of entire transformer assembly to tighten, replace, or eliminate loose connections/parts
hope this helps...also do a search through some old "AIEE Transactions on Power Apparatus and Systems" for articles on tranformer noise & noise mitigation.
RE: Decrease of noise
RE: Decrease of noise
RE: Decrease of noise
Q. Why do transformers hum?
A. Because they don't know the words.
Can give a good insight as to the personal qualities as well as the engineering ability of the applicant.
RE: Decrease of noise
RE: Decrease of noise
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{Wicked link but seems to work OK.}
RE: Decrease of noise
2.Consider adjustment of transformer taps.
RE: Decrease of noise
RE: Decrease of noise
I woul like to make more precise I speak about design of new transformer (not about exist)with requiremens about sond level no more than 60dB
RE: Decrease of noise