Transformer Turns Ratio Set provides ±0.1% accuracy.

Press Release Summary:

Suited for single- and 3-phase transformer testing, automatic Model TTR25 measures turns ratio of 20,000:1 in less than 5 seconds and locates problems in transformer windings and magnetic core circuits. Unit also measures excitation current as well as normal and reverse polarity of single-phase transformers. Battery-operated tester features single-button operation, quick-start guide on front panel, shock-resistant case, and backlit LCD screen.

Original Press Release:

New TTR25 Transformer Turns Ratio Set Features User-Friendly Design

Designed for simple operation and optimum usability, Megger's new TTR25 automatic transformer turns ratio set is ideal for single- and three-phase transformer testing. The instrument is able to accurately measure a high turns ratio of 20,000:1 in less than five seconds and quickly locate a range of problems, including problems in transformer windings and magnetic core circuits.

In addition to measuring small ratio changes, the unit measures excitation current and normal and reverse polarity of single-phase transformers. It is also useful for measuring both tapped and potential and current transformers. As a result of its accuracy (+- 0.1 percent), the tester effectively reduces the need for additional equipment.

The unique design of the TTR25 sets the instrument apart. Well-suited for most environments, the battery-operated unit comes with an easy-to-use single button operation feature and a quick-start guide on the front panel. Users will also appreciate that it is lightweight (a mere 2.8lbs including leads), small enough to be held in one hand and able to provide up to 12 full hours of field operation. A shock resistant case ensures that results will not be lost.

Well-suited for testing in substations, transformer-manufacturing environments and meter shops, the unit features a high-contrast backlit LCD screen that is visible in either bright or ambient light. Ready-to-use, the TTR25 needs no additional software and is comes with six operator-selectable languages.

Megger is one of the world's leading manufacturers and suppliers of electrical and telecommunications test and measurement equipment. With research, engineering and manufacturing facilities in the USA and UK, combined with sales and technical support in most countries, Megger is uniquely placed to meet the needs of its customers worldwide.

For more information, please contact: Gary Guthrie; E-mail:

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