The YNCZ-30A grounding wire group DC resistance tester is developed according to the "Preventive Test Regulations for Electric Safety Tools and Appliances", and is used to test whether the contact between the ground wire lugs and bus clamps and the multi-strand copper soft conductors is good.

This instrument adopts the direct current voltage and current ratio method, and is composed of a low-voltage high-current constant current source and a measurement system. The constant current source adopts switching power supply technology, which has the characteristics of anti-interference and strong stability. The measurement part adopts the intuitive high-brightness digital meter, the measurement is accurate and reliable, and the loop selection and switching operation is flexible and simple.

1. The operation is simple and the criterion is intuitive;

2. Strong anti-interference ability and good stability;

3. High-brightness digital display, resistance value display, current display;

4. Flexible loop switching, with six gears of "AB, AC, AD, BC, BD, CD", the resistance between any loops can be measured without removing the test clip during the test, which is convenient for measurement;

5. The chuck, there is no need to manually replace the test clamp during the test, which is convenient for assembly and disassembly.

1. Input power: ~220V±10%, 50Hz

2. Input power: 200W

3. Constant current output current: 30A (can be fine-tuned)

4. Digital resistance meter: Range: 0~199.9mΩ Accuracy: ±0.5%

5. Working method: intermittent