Digital ratiometer TTRU3

for transformers

• Guaranteed accuracy ±0.05 % from -20 °C to +50 °C • Three-phase test voltage - up to 25 0V • Three-phase step up ratio (patent pending) • Phase shifting and zigzag transformers tested easily and accurately • Smallest/lightest three-phase test set on the market • Fast three-phase tests - less than 10 seconds Megger’s TTRU3 transformer turns ratio tester is a revolutionary instrument designed to perform three-phase turns ratio measurements using step-up excitation (patent pending). A single three-phase lead-set connection is all that is required to complete three-phase tests in less than 10 seconds! The TTRU3 is capable of three-phase excitation and can induce up to 250 V on the primary winding, overcoming the voltage dependence seen on larger transformers. The three-phase source also allows you to test phase shifting and zigzag transformers, and provides you with a guaranteed accuracy of ±0.05 % from -20 °C to +50 °C. What’s more, the TTRU3 can be connected to a computer, enabling you to download results or control the instrument remotely. There is also an optional 2 inch printer for the instrument, enabling you to have a hard copy of your results if required. You can also configure test plans and store results directly on the TTRU3 using the built-in 7 inch (18 cm) daylight-viewable touch screen display. To generate reports, results can be downloaded in Excel, and PDF files can be saved to a USB drive.