Megger TTRU3 BASIC True Three-Phase Transformer Turns Ratio Tester

Product Highlights

The NEW Megger TTRU3 transformer turns ratiometer uses a revolutionary design to perform a complete series of measurements on a transformer, including 3Ø step up turns ratio testing (patented). 3Ø voltage output offers numerous advantages to testing with today's busy schedules. Validation and recognition of phase relationship of vector groups facilitated with on screen vector rotation and Auto vector recognition. Accurate measurement of phase shift relationship (for phase shifting transformers and Zig Zag vector configurations). More reliable - removes the requirement for internal relay switching which is a common cause of failure. Faster testing - all 3 phases tested simultaneously.

The TTRU3 is an important tool for determining the mechanical condition of transformers. All ratio tests are performed in one instrument, with only one 3Ø lead-set connection. The TTRU3 utilizes the latest 7 inch (180 mm) color touch display, as well as an optional printer so you never lose your results. This is complimented with remote control which can be operated from your PC, as well as the ability to download results to a USB memory device.

The technology within the TTRU3 is based on patented 3Ø step up ratio testing. When compared to traditional 1Ø step down test instruments, the TTRU3 removes the inaccuracy associated with test voltage. The user is no longer required to know the "proper" test voltage required to obtain a "valid" result. This makes testing much easier, as repetition of testing at proper voltage is no longer required.

The TTRU3 is designed to test ALL power, instrument (CTs and PT/VTs), and distribution transformers without the need of traditional high voltage excitation. With our patented step up technique, you are no longer required to know the "proper" test voltage to apply to obtain a "good" result - the test set decides for you - all in a box that is up to 35% smaller and lighter than other turns ratio meters. With 3Ø excitation, testing is up to five times faster than previous phase-by-phase switching single instruments, and errors due to loading of delta secondary and tertiaries are problems of the past.

Features

• Guaranteed accuracy ±0.10% from -20°C to +50°C
• Up to 125V test voltage
• Step up ratio technique
• Magnetic balance test capabilities
• Step-up ratio testing
• Step-down ratio testing
• Confirmation of expected nameplate vector configuration
• Ability to measure actual vs expected phase shift
• Unique kelvin clamps with adjustable 3-inch jaw
• Banana plug input for connection to terminal blocks
• Turns ratio % error vs nameplate with pass/fail