ZZ-3A Inductive Load DC Resistance Tester

Product Introduction:

The DC resistance test of transformer windings is a test item for transformers after handover, major repairs, and changes to tap changers. By measuring the DC resistance of the transformer winding, the welding or connection quality of the leads, the presence of inter turn short circuits or open circuits in the winding, and the good contact of the tap changer can be checked. In the past, QJ44 double arm bridge was used to measure direct resistance, and the measurement current of this type of bridge is in the milliampere range, which requires a long measurement time and low accuracy. In order to change this situation, shorten measurement time, and reduce the workload of testers, our company has developedZZ-3A Inductive Load DC Resistance Tester.

This product is a high-precision replacement for DC single and double arm bridge. The instrument adopts * switching power supply technology, which is more than 100 times faster than the bridge in measurement speed. The display part displays the measurement results on a four and a half digit LCD liquid crystal display, and the three and a half digit LCD liquid crystal displays the ambient temperature or test current value. It overcomes the disadvantage of other similar products that are inconvenient to read under sunlight with LED display values, and also has automatic arc extinguishing function. This DC resistance rapid tester has the advantages of fast speed measurement, high accuracy, intuitive display, strong resistance, small size, low power consumption, stable and reliable test data, and is not affected by human factors. The instrument is equipped with a rechargeable battery pack (12V), which can be used for both AC and DC, making it convenient for on-site and field testing.

The DC resistance rapid tester produced by our company meets the requirements of DLT 845.3-2004 "General Technical Conditions for Resistance Measurement Devices Part 3: DC Resistance Tester".

Product nickname:
DC resistance speed tester, transformer DC resistance tester, transformer DC resistance speed tester, transformer DC resistance fast tester, inductive load DC resistance speed tester, inductive load DC resistance fast tester, inductive load DC resistance tester

Product features:
1. Fast testing speed: The DC resistance fast tester can output a charging current of up to 2A, effectively compensating for the current inertia of large inductive devices during measurement, accelerating iron core saturation, shortening charging time, and improving testing speed. It is hundreds of times faster than traditional instruments such as single and double arm bridge
2. High accuracy: In addition to using the four terminal measurement method of *, this instrument also adopts the constant current power supply technology of *, which keeps the charging current of inductive loads at a relatively stable value, with stable anti inductance ability and strong anti * force, thereby ensuring measurement accuracy. And using imported components from abroad, the measurement results have high accuracy and good repeatability.
3. Wide measurement range:ZZ-3A Inductive Load DC Resistance TesterThe resistance measurement range is 1 μ Ω～ 2K Ω, with a wide range.
4. Dual use of AC and DC: This product comes with a rechargeable battery pack, powered by AC and DC, with a portable design that is easy to use and carry.