3PH-BZ20 Transformer DC Resistance Tester

Estimated delivery : 30 Days; MOQ : 1 PCS
Features :

1. Three measurement circuits measure synchronously, display simultaneously and automatically calculate the imbalance rate.
2. The functional configuration is highly flexible. It can perform three-phase measurement, two-phase measurement, and single-phase measurement. The output current can be combined arbitrarily. For the 3×20A tester, it can be combined into 20A+20A+20A mode, 20A+20A mode, 40A mode, and 20A mode, which is extremely convenient to use.
3. Automatically programmed current source technology. The various current combinations mentioned above all start from the minimum value 0 and have a total of 1000 current gears. They are automatically controlled by the internal microcontroller according to the measured resistance, thereby achieving a relatively wide measurement range and the best measurement state, without the need to manually switch current gears.
4. The measurement speed is fast. For the high-voltage star-type side of the on-load voltage-regulating transformer, there is no need to cut off the power or reverse the line. The three-phase resistance values ​​of all tapping points can be measured once the power is turned on. The low-voltage side can use a 40A high current method. 5. The whole process can greatly shorten the measurement time and improve work efficiency.
5. Highly intelligent design, ingenious and advanced function settings, can automatically determine faults such as virtual connection of the test line.
6. The protection function is perfect, which can reliably protect the instrument from the impact of reverse electromotive force and has automatic discharge indication function.
7. Using high-speed microcontroller and high-speed 16-bit A/D converter, the data response is fast and the repeatability is good after switching the on-load voltage regulator. The test effect is significantly better than the slow double-integral A/D sampling method.
8. All measurement results can be stored or printed. The instrument has a built-in non-power-off memory, which can keep the measurement data for a long time and can be checked or printed at any time.
9. All menus and operation prompts are in Chinese characters, intuitive and convenient.
10. With RS-232 interface, it can be connected to an external printer or communicate with a computer.
11. Calendar and clock functions without power failure.

Technical Parameters Specifications :

1. Resistance measurement range: 100mW~20W, minimum resolution 1mW
2. Resistance measurement accuracy: 0.2%±5RD
3. Current source output range: 3× (0~20A)
4. Working temperature: -10℃~40℃
5. Ambient humidity: 10%~85%
6. Storage temperature: -20℃~50℃
7. Volume: 430×300×265 (mm)
8. Weight: 12kg (excluding test wire)