Core type power transformers up to 400MVA 345kV Shortest lead time in the industry Shell type power transformers up to 1400MVA 500kV The most reliable transformers made right here in the USA

We’re making a quieter transformer

We are quietening power transformer noise at its source using our unique technology!

Virginia Transformer has successfully designed, manufactured and tested fluid filled transformer for up to 15dBA lower than the NEMA TR1 requirement. This is also been validated with field measurement of sound; field measurements have shown similar or better performance than the plant measurements

Low Noise Transformer also assures:

  • Engineering perfection
  • Flawless manufacturing
  • Environment – friendly Unit

Few low noise transformer results are tabulated below.

Job # Description OA/FA Calculated Noise, dBA OA/FA Measured Noise, dBA NEMA TR1, dBA
GA247A 75//140MVA, 750BIL, 61.50 61.8/71.2 79/83
GA264A 57.8/96 MVA, 350BIL, 61.75 62.4/68.5 76/79
GA245A 52.8/100MVA, 650BIL, 61.80 58.30/78.1 77/80
GA252A 30/56 MVA, 350BIL, 58.60 56.4 73/78
GA257A 25/47MVA, 550BIL, 59.5 61.8/71.2 74/78
HA671A 30//56MVA, 550BIL, 58.70 60.40/71.1 75/79
HA837A 24/44.8MVA, 650BIL 64.71 63.40/74.4 73/78
HA836A 22.7/42.4MVA, 650BIL, 64.9 62.85/70 73/78
HA452A 22.5/37.5, 350BIL 51.2 54.4/58.8 71/74
HA543A 18/33.6MVA, 450BIL 57.4 56 72
HA726A 15/25MVA, 450BIL 64.0 61.2/67 72/75
HA604A 10/14MVA, 450BIL 54.8 57.15/63.63 70/73
C707A 10/14MVA, 450BIL 60.9 62/65 70/73
D060B 30/56MVA, 250BIL 58.9 56.64/69 73/76
D064A 12/20MVA, 150BIL 62.5 62.25 70/72
D053A 15/25MVA, 550BIL 62.75 61.76 72/75
D047A 10/11.2MVA, 150BIL 53.00 54.68 68
D079A 3.75/4.68MVA, 200BIL, 59.75 59.4 64

Octave band sound measurements:VTC measures sound using octave band measuring device as per IEEE Std C57.12.90 based on customer requirements.

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