Digital ratiometer TTR25-1

for transformers

• Fully automatic, handheld, fast, easy-to-use, robust, lightweight • Battery powered (AA or LR-6) • Tests turns ratio, excitation current, and polarity • Simple, one-button operation • Rugged metal connectors on leads and unit The TTR25-1 handheld transformer turns ratio tester (TTR) is a robust, lightweight, and battery-operated instrument. 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), as well as potential and current transformers (PTs and CTs), and tapped transformers. Deviations in these measurements will quickly indicate problems in transformer windings or in the magnetic core circuits. The unique design of the TTR25-1 allows you to operate the test set while holding it in one hand. It effectively eliminates you having to kneel or bend down to operate the instrument and speeds up testing time. Realising the variety of harsh environments in which the TTR25-1 must operate, special attention has been paid to making it extra rugged and robust, with a high impact, shock-resistant case. Yet it is also incredibly lightweight at a mere 870 g (1.9 lbs). Additionally, 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 20 000:1 accurately with the lowest excitation voltage. The excellent repeatability of the TTR25-1 helps you to determine the condition of transformers under test. It is designed for simple, one-button operation with the measured results displayed directly on the easy-to-read LCD screen, or printed to the optional printer.