Digital ratiometer HZBB-10B

for transformers

In power transformers used in the production of semi-finished and finished products, before a new transformer is put into operation, and according to the national ministry’s preventive testing procedures, the transformer’s turn ratio (or voltage ratio) test must be conducted. This test checks the correctness of the transformer’s turn ratio, the condition of the tap changer, whether there is a turn-to-turn short circuit, and whether the transformer is capable of operating in parallel. The HZBB-10B transformer turns ratio meter intelligent transformer ratio group test, using a new algorithm developed by our company, can measure the three-phase transformer ratio without requiring adjustment of the three-phase power supply balance, ensuring accurate measurements. As a result, the test is fast and can measure the ratio and wiring configuration in approximately 3 seconds. 1.It can automatically measure the transformer ratio for both three-phase and single-phase transformers, and calculate the ratio error. 2.The number and polarity of the transformer connection group can be measured, and the secondary wiring vector diagram is displayed. This is intuitive, and the instrument has a self-calibration function. Based on the self-calibration results, it can distinguish between a faulty test line or instrument. 3.The instrument can display the transformer voltage waveform and the phase relationship between the primary and secondary sides. It can also measure transformer voltage harmonics, making it convenient for fault analysis. 4.It includes a CT/PT ratio and polarity test function.