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My Transformer is very noisy. Can anything be done to quiet the sound level?

Transformer sound levels

Product Line:
LV Transformers

Applies to Low Voltage Transformers by SquareD/Schneider Electric

Transformer noise contribution


Low Voltage Ventilated and Non Ventilated Transformer Installers should be sure to fully loosen the core and coil mounting nuts in each corner of the Transformer assembly to allow the rubber sound/vibration dampening pads to work properly.  (Refer to page 25 of the attached bulletin). Transformers are allowed by NEMA standards a certain amount of normal operating sound level which varies with kVA size. If you think your Transformer exceeds these allowable limits then contact your local SquareD/Schneider Electric Field Office or Distributor supplier. There is no dependable or safe way to reduce the actual sound level of the Transformer at the job site. However, sound can be amplified by reflecting hard surfaces near Transformers. Acoustical treatment of these surfaces, or reorientation of the Transformer can sometimes reduce objectionable noise. SquareD/Schneider Electric can offer engineered reduced sound level Transformers on a special order basis. Contact your local Distributor or SquareD/Schneider Electric Sales Office for more information.

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