According to IEC and the relevant national standards, transformer turns ratio test is a necessary project in the process of power transformer production, user handover and maintenance test.

Product Features:-

● Real three phase test: the single-phase power input, the internal digital synthesis three-phase standard sine wave signal source, produces the three-phase test power supply (distortion is less than 0.1%, symmetry is better than 0.05%) output through the high fidelity power amplifier, the test result has the better equivalence, and there will not be a misrepresentation of the group.
● Powerful: able to carry out single phase measurement, but also the automatic test of three phase winding can be realized. Measuring polarity, phase angle by single and three-phase, complete measurement of AB, BC, CA three-phase ratio and phase angle value, error, and tap position, tap values at once, can automatically identify the group number.
● Phase angle measurement function: accurately measuring the phase angle between high and low voltage side, ratio and angle of non-integer transformer can be measured.
● Six angle graph display function: the test results are displayed with the number and six angle vector diagram, and the transformer connection group situation is seen intuitively.
● Blind test function: no need to choose connection mode and connection group, no need to external short circuit when measuring Y/△, △/Y transformer, the connection mode can be automatically switched according to the selected test content. The ratio and group number measurement can be performed on the transformer without nameplate.
● Tap test: rapid measurement of ratio and ratio error in the position of each tap changer, the rated ratio only need to input once, no need to repeat input to calculate the ratio error of each tap position.
● Turns ratio and running voltage ratio measurement function, the running ratio can real reflect the actual voltage ratio value of transformer under running situation.
● Good vibration resistance: the use of military connectors enhanced the anti vibration performance.
● Adopts 5.6 inch high-definition color screen, the display data effect and vector diagram effect are intuitive and delicate.
● Digitally synthesized standard sine digital source, the distortion is less than 0.1%, unaffected by the quality of working power.
● Convenient to carry: small volume, light weight.
● Internal rechargeable battery, the test can be completed without any power supply on-site.

Specification:-

● Ratio measurement range: 0.8~10000
● Measuring speed: complete the three phase test in 1 minutes
● Measuring accuracy: voltage accuracy of HV side: 0.05%
voltage accuracy of LV side: 0.1%
phase angle accuracy: 0.1°
ratio accuracy: 0.1% (0.8－3000)
0.2% (3000－10000)
● Weight: 3kg.
● Power supply: 220V±10%, 50Hz±1Hz
● Temperature :-20℃～40℃
● Relatively humidity: ≤85%,non-condensing

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