Transformer Turns Ratio (TTR) Testing Equipment through the transformer ratio test, the transformer winding turns ratio and the status of the tap-changer can be checked, and whether the transformer has defects such as inter-turn short circuit and whether it can be operated in parallel, so as to ensure the safe use of the equipment.

1. Measurement range：0.9~10000
2. Measurement speed: finish three phase testing within 35s
3. Measurement accuracy: voltage on HV side 0.05% 4. Fit to use in field
5. Size：320×240×130
6. Weight ：2.6Kg

True three-phase test : Single phase power input, internal digital compose into three- phase standard sine wave signal source.Three - phase test power supply is generated through high fidelity power amplifier. With strong function, not only for single-phase measurement, but also for three-phase winding test automatically , such as polarity and phase angle test . The variable ratio, phase Angle, error, tapping position and tapping value of AB, BC and CA are measured at one time, and the group number can be automatically identified.

According to IEC and relevant national standards, this device can measure variable ratio, group number and phase Angle with high accuracy without knowing any parameters of tested power transformer. It's suitable for various transformer testing, such as Z-type transformer, rectifier transformer, furnace transformer, non-hourly shift transformer, equilibrium transformer, Scott transformer and inverse Scott transformer. It's built-in battery, so can conduct test without extra power. With big LCD screen display, very convenient and easy to read data. It can store 1000 groups test data, and transfer it to computer by USB disk .