Power Transformer Testing & Oil Purification Solutions

Turns Ratio Test Sets

TRT Series by DV Power

DV Power’s TRT series offers high accuracy, true three-phase testing with advanced features such as accurate phase shift measurement and full auto test stepping through all taps under PC control. The series includes:

TRT Series by DV Power
TRT-H, TWR–H and RMO-TH testers

Handheld TRT

Cost-effective and portable, the new handheld models are perfect for padmount and low transformers up to 35KV:

Dynamic OLTC Graphic Test Set

TWA Series by DV Power

The TWA -40D from DV Power (This is a combo 3 phase test set to do fast Winding Resistance test, dynamic OLTC graphic analysis and demagnetization once all testing (DC) is complete. Auto-discharge function for safety. DV Win PC software for test control and review of results and archive/report generation) 3 phase Model TWA 40D [click on TWA-40D pdf] , single phase model RMO-60TD [click on RMO-60TD pdf]  now with full auto test stepping through all taps under PC control. New model TWA400 w 7” display and internal memory, and new TWA500 w large 10” display. [click on TWA advanced brochure]

TWA Series by DV Power
the TWA -40D from DV Power (This is a combo 3 phase test set to do fast Winding Resistance test, dynamic OLTC graphic analysis and demagnetization once all testing (DC) is complete. Auto-discharge function for safety. DV Win PC software for test control and review of results and archive/report generation) 3 phase Model TWA 40D [click on TWA-40D pdf] , single phase model RMO-60TD [click on RMO-60TD pdf]  now with full auto test stepping through all taps under PC control. New model TWA400 w 7” display and internal memory, and new TWA500 w large 10” display. [click on TWA advanced brochure]

Winding Resistance Test Sets

RMO-T and TWA-25A Series by DV Power

The TWA -40D from DV Power (This is a combo 3 phase test set to do fast Winding Resistance test, dynamic OLTC graphic analysis and demagnetization once all testing (DC) is complete. Auto-discharge function for safety. DV Win PC software for test control and review of results and archive/report generation) 3 phase Model TWA 40D [click on TWA-40D pdf] , single phase model RMO-60TD [click on RMO-60TD pdf]  now with full auto test stepping through all taps under PC control. New model TWA400 w 7” display and internal memory, and new TWA500 w large 10” display. [click on TWA advanced brochure].

Winding Resistance test set series RMO-T and TWA-25A from DV Power. 3 phase model TWA-25A with quick connections for H and X phases, with demagnetization function. [click on Brochure TWA25A ] and [click on comparison between TWA …. pdf],(Single phase basic model RMO-20T [click on RMO-20T pdf] )Winding resistance with heat run test ability for factory test model RMO-100TT [click on rmo-100TT pdf).

Demagnetize any size transformer with DV Power model DEM60R automatic 3 phase safe demag. (utilizes effective intelligent step down and polarity switch action to safely reduce B-H magnetic curve to non-existent) [click on DEM60R pdf] New feature measures magnetic flux of transformer core!

Frequency Response Analyzer

FRA500 by DV Power

The FRA500 offers swept frequency response analysis with unique abilities to compare files from other SFRA test set vendors. It provides graphic representation to determine mechanical defects in windings, available for under $15K.  [click on FRA500] brochure.

TWA Series by DV Power

Transformer Oil Purification Systems

ENERVAC Oil Purification Systems

ENERVAC provides medium to large-scale transformer oil purification systems:

  • Model 865A: For degasification, drying, and particle filtering. Available in sizes from 50 gph to 3600 gph Learn more about Model 865A.
  • ENERDry System: For temporary or semi-permanent dryout of transformer oil, continuously removes moisture and offers fine filtration Learn more about ENERDry.
  • Model E575R: For large-scale oil regeneration, extending transformer oil lifetime with an extremely cost-effective method


ENERVAC Oil Purification Systems

Transformer Oil Regeneration Systems

ENERVAC Oil Purification Systems

Large scale Transformer Oil Regeneration System from ENERVAC. Model E575R provides an extremely cost-effective and environmentally acceptable method of extending transformer oil lifetime to over 100 years! In addition to the 865A functions above, It restores used oil to virgin oil properties of optimum acidity and dielectric properties, with unique absorbent material in columns that can be re-activated efficiently. Typical semi-trailer mount with generator option. [click on 575R pdf]



For detailed application notes and more information, visit our Transformer Test Application Notes page.

For further inquiries and detailed brochures, please contact us.

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