Product Details

 <sup>The instrument extensively uses high-integration SMD components and advanced constant current source technology, greatly reducing the volume, weight, and power consumption of the instrument, while further shortening measurement time, ensuring that the DC resistance measurement of large transformer windings is more stable and reliable. It is specially used for the measurement and analysis of low-resistance inductive components such as power transformer and instrument transformer windings.

Main technical parameters of 3A DC Resistance Tester:

1. Output current and measurement range:

This model has seven gears to choose from, consisting of one automatic gear and six current gears. Users can select the appropriate gear according to actual needs for measurement. If the resistance range of the test object cannot be estimated, please choose the automatic gear to let the machine complete the measurement automatically. The measurement range and accuracy corresponding to each gear are as follows:

    ① Automatic gear: 1mΩ-20000Ω     Accuracy: 0.2% ± 5 digits

    ② 10A gear: 1mΩ-500mΩ       Accuracy: 0.2% ± 2 digits

    ③ 5A gear: 50mΩ-1Ω         Accuracy: 0.2% ± 2 digits

    ④ 1A gear: 100MΩ-20Ω       Accuracy: 0.2% ± 2 digits 

    ⑤ 100mA gear: 50Ω-500Ω      Accuracy: 0.2% ± 2 digits

    ⑥ 10mA gear: 1000Ω-2000Ω    Accuracy: 0.2% ± 5 digits

    ⑦ 1mA gear: 1000Ω-20000Ω    Accuracy: 0.2% ± 5 digits

2. Resolution: 1μΩ

3. Operating temperature: 0～40℃

4. Ambient humidity: ≤90%RH, no condensation

5. Power supply: AC220V±10%, 50HZ±1HZ

6. Dimensions: 360×265×230mm

Weight: 6Kg (excluding test leads)

Main features:

● Adopts linear power supply technology and high-integration SMD components, with microprocessor-controlled testing process, unaffected by human factors, ensuring stable and accurate test results

● Has complete back-EMF protection function and on-site anti-interference capability, anti-arcing, strong reliability

● Audible discharge prompt and LCD display of discharge completion, clear discharge indication, reducing misoperation 

● Poor wiring or incorrect wiring prompts in Chinese and automatically terminates current output, high safety

● Full Chinese menu prompts, the instrument displays range and measurement range options at startup, simple operation, providing step-by-step work reference for on-site operating engineers, high intelligence

● Seamless aluminum alloy anti-static sprayed casing, with external shockproof case design. Compact, beautiful, sturdy, and durable.</sup>