DC resistance tester

1、 Overview:
The DC resistance tester is based on a high-speed microcontroller, with built-in rechargeable batteries and charging circuits. It uses high-speed A/D converters and multi range programmable current source technology to achieve a wide range of resistance measurement, achieving high measurement results and highly automated measurement functions. It has the characteristics of high accuracy, wide measurement range, stable data, good repeatability, strong anti-interference ability, complete protection function, and fast charging and discharging speed. Especially suitable for measuring high resistance windings such as field without power supply conditions and transformers. This instrument is small in size, light in weight, and easy to carry, and is a product for testing the DC resistance of transformers.

ZGY-3 Transformer DC Resistance Tester (with built-in rechargeable battery) Main functions and features:
1. Using a high-speed 16 bit A/D converter, the measurement data is stable and has good repeatability.
2. Built in rechargeable battery and fast charging circuit, with charging indicator and overcharge protection function.
3. Automatic programmable current source technology, which can manually select the typical output current or automatically control the output current by an internal microcontroller. The current source has a total of 3000 current levels, and in automatic mode, the internal microcontroller automatically controls the measured resistance to achieve a relatively wide measurement range and * measurement state.
4. Real time dynamic display, fast response speed, can directly switch the tap changer in the measurement state, the instrument will automatically prompt, and the new resistance value will be displayed quickly without restarting.
5. Highly intelligent design with clever and innovative functional settings, capable of automatically detecting faults such as virtual or disconnected test lines.
6. The protection function is complete and can reliably protect against the impact of back electromotive force on the instrument, with automatic discharge indication function.
7. It can display the measured current and measurement time.
8. It can store 250 measurement data without loss in case of power failure.
9. All Chinese character menus and operation prompts are intuitive and convenient.
ZGY-3 Transformer DC Resistance Tester (with built-in rechargeable battery) Main technical specifications:
1. Output current and range: Output current: 0-10A, range: 100mW-30KW.
current
range
current
range
10A
0.5mW-600mW
0.
1W-12W

1mW-1.2W
0.2A
3W-30W
2A
10mW-3W
20mA
25W-300W
Note: If the above range is exceeded, please use the automatic testing function.
2. Test accuracy: 0.2% maximum resolution: 0.1mW.
3. The instrument adopts a 65K true color LCD display, with Chinese menu prompts and easy operation.
4. It has a large storage capacity and can store 2000 test records,
5. Working power supply: AC220V ± 10%
6. Working temperature: -10 ℃ to 40 ℃.
Working humidity: Environmental humidity<80% RH.