Megger TTRU3 True 3 Phase Transformer Turns Ratiometer

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 patent pending 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. 

Key Features

• Latest 7 inch (180 mm) color touch display, as well as an optional printer, complimented with remote control which can be operated from your PC, as well as the ability to download results to a USB memory device
• 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)
• Faster testing – all 3 phases tested simultaneously
• More reliable - removes the requirement for internal relay switching which is a common cause of failure 
• Leads come with industry defining kelvin clamps with an adjustable 3-inch jaw and banana plug inputs, making connections to transformers or terminal blocks easy and safe