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Should the contractor loosen the rubber isolation pads in a Ventilated Transformer to reduce the auible sound level?

Issue:
Isolation Pads in Ventilated Transformers

Product Line:
LV Transformers

Environment:
Applies to Low Voltage Transformers by SquareD/Schneider Electric

Cause:
Transformer audible noise

Resolution:

As described in the installation instructions that accompany each Ventilated Transformer, the bolts fastening core/coil assembly to base must be loosened 1/4 to 1 turn to allow the core/coil to ``float`` on the vibration pads. This provides reduction of transmitted sound.


CTA-ID : 2052771
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