In the production process of semi-finished products and finished products of power transformers, before the newly installed transformers are put into operation and according to the preventive test regulations of the Ministry of electric power of the people's Republic of China, it is required to test the turns ratio or voltage ratio of the operating transformers, so as to check the correctness of the turns ratio of transformers,the status of tap changers, whether the transformers are short circuited between turns, and whether the transformers can operate in parallel. The traditional bridge reading is not intuitionistic, so it can only be measured phase by phase for conversion. RS6810A transformer ratio tester overcomes the shortcomings of traditional ratio bridge test, which is easy to operate and intuitionistic. It adopts three-phase precise inverter power supply, which is fast in test and high in accuracy.
1. The three-phase precision inverter power supply is adopted in the instrument, instead of single-phase mains power supply, which can eliminate the harmonic influence of mains voltage and make the measurement more accurate. There is no effect when the working power is generator.
2. The three-phase output voltage is adopted to improve the test speed. The Angle between phases can be measured and the transformer connection group 0-11 can be automatically identified
3. It is applicable to a wide range of transformers, especially for the measurement of z-type transformer, rectifying transformer, grounding transformer, furnace transformer, phase change transformer and balance transformer, with the most comprehensive measurement parameters.
4.The use of homemade precision three-phase inverter power, with high and low voltage reverse connection protection, transformer between turns short circuit protection, tap switch is not in place, output short circuit protection, increase the stability of the instrument.
5. After the input of rated parameters, transformer ratio, error value and tap switch tap position can be automatically measured, especially for the tap switch with asymmetric tap, the exact position of the tap switch can also be accurately measured, and the tap switch with up to 99 tap points can be measured.
6. 7-inch HD color touch screen liquid crystal, modular display, each operation step has prompt, no manual, just look at the liquid crystal prompt can complete the operation of the instrument.
7. The instrument has both print output and U disk interface, and also can be equipped with RS232 interface, which is convenient for paperless office.
8. Adopt cold and temperature resistant, sealed and waterproof, anti-fall and shockproof multi-functional engineering plastic box, which is convenient for field test.