Tektronix Encore

Megger (AVO Biddle) TTR20-1
Transformer Turns Ratio Tester

Electrical Test and Power Analyzers >> Accessories and Other >> Transformer Turns Ratio Tester
Rent Used Test Equipment
Manufacturer: Megger (AVO Biddle)
Model: TTR20-1

Megger (AVO Biddle) TTR20-1 Transformer Turns Ratio Tester

Electronic Test and Measurement Equipment

Megger (AVO Biddle) TTR20-1 Transformer Turns Ratio Tester Product Datasheet Download Product Datasheet

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Product Overview

RENT MEGGER TTR20-1 Transformer Turns Ratio Tester (Call for Availability)


The Megger TTR20-1 is an automatic hand-held battery operated transformer turns ratio test set. It is used to measure the turns ratio, excitation current and polarity of windings in single- and three-phase distribution and power transformers (tested phase by phase), potential & current transformers, and tapped transformers. The unique design of the TTR20-1 allows the user to operate the test set while holding it in one hand. It effectively eliminates the user from having to kneel or bend down to operate the instrument and speeds up testing time. Realizing the extreme environments in which the TTR20-1 must operate, special attention has been paid to making it extra rugged, with a high impact, shock resistant case, yet incredibly lightweight at a mere 870 g (1.9 lbs).

Its design makes this instrument well suited for use in a variety of harsh environments. The TTR20-1 is particularly suited for testing in substations, transformer-manufacturing environments, and meter shops. It features a high-contrast, backlit LCD screen which can be seen in bright or ambient light. This unit measures a high turns ratio of 10,000:1 accurately with the lowest excitation voltage.  It is designed for simple, one button operation with the measured results displayed directly on the easy to read LCD. The TTR20-1 needs no additional software and comes ready to use complete out of the box.


Features of the MEGGER TTR20-1 Transformer Turns Ratio Tester Include:

  • Single- and three-phase transformer testing
  • Fully automatic, fast, easy-to-use, robust, lightweight
  • Battery powered
  • Tests turns ratio, excitation current, and polarity
  • Simple, one-button operation
  • Quick-start guide on front panel

See Datasheet for full specifications 

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