Maddox Industrial Transformer
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Audible Sound Levels
​
Liquid-Filled Transformers

Picture
​All transformers have a slight hum, or buzz when operating, but certain regulations are in place to ensure they are built to operate as quietly as practically possible.

Below are the latest NEMA TR-1 Average decibel ratings as of 2020.

Maddox Industrial Transformer liquid-filled padmount, polemount and substation transformers are built to the latest NEMA, IEEE, ANSI standards, and Department of Energy regulations.

Call us if you have any questions: 1-800-270-2011
​Self-Cooled, Two Winding kVA Rating
Average ​Decibels (dB)
45-500
​56
​501-700 
​57
701-1000
​58
​1001-1500
​60
​1501-2000
​61
​2001-2500
​62
2501-3000
​63
​3001-4000 
​64
4001-5000
65
​5001-6000
66
​6001-7500
67
7501-10000
68
Maddox Industrial Transformer, LLC.

East Coast: 865 Victor Hill Road, Greer, SC 29651
West Coast: 1601 SE Commerce Ave, Battle Ground, WA 98604 


800-270-2011 - 
sales@maddoxtransformer.com

© 2022  MADDOX INDUSTRIAL TRANSFORMER, LLC.

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  • About
  • CAREERS
  • SELL SURPLUS
  • SUPPORT
    • NEWS
    • GLOSSARY
    • MANUALS
    • T&C & WARRANTY
    • RETURN REQUEST
    • CREDIT APPLICATION
  • CONTACT US
  • ONLINE STORE
  • PRODUCTS
    • Padmount Transformers
    • Dry Type Transformers
    • Substation Transformers
    • Rental Transformers
    • Motor Starting Autotransformers
    • Transformer Repair