Search FAQs

{"searchBar":{"inputPlaceholder":"Search by keyword or ask a question","searchBtn":"Search","error":"Please enter a keyword to search"}}

What is the standard sound level (in dB) of Transformers of various kVA ratings?

Sound level can be a factor when specifying Transformers

Product Line:
LV Transformers

Applies to Low Voltage Transformers by SquareD/Schneider Electric

Transformers of different kVA sizes can generate varying levels of sound when energized

Square D/Schneider Electric Transformers are built to standard sound levels listed in NEMA Standard ST-20.  The transformers and corresponding sound levels per NEMA ST-20 are as follows . These can also be found in the Digest :

kVA <> NEMA standard sound level
0 - 9 <> 40dB
10 - 50 <> 45dB
51 - 150 <> 50dB
151 - 300 <> 55dB
301 - 500 <> 60dB
501 - 700 <> 62dB
701 - 1000 <> 64dB

Did this answer your question?

Explore more
Users group

Discuss this topic with experts

Visit our Community for first-hand insights from experts and peers on this topic and more.