The YNZZ-20S three-channel transformer DC resistance tester is a must-test item for semi-finished products, finished products factory test, installation, handover test and preventive test of the power sector in the manufacture of transformers. It can effectively find the material selection, welding, and connection parts of transformer coils. Manufacturing defects such as strands and broken wires and hidden dangers after operation. In order to meet the needs of rapid measurement of transformer DC resistance, our company has developed a transformer DC resistance tester for YN connection windings. The instrument realizes the functions of three simultaneous power-on, independent current sampling, voltage sampling, and simultaneous measurement and display of the three-phase resistance value and three-phase unbalance rate, which greatly shortens the test time of the transformer DC resistance and solves the problems of the power transformer. The time-consuming test of the DC resistance of the connecting winding is only 1/3 of the traditional method.

1. The instrument has a large output current and the automatic current selection is easy to operate.

2. Three-channel measurement, real-time acquisition, measure three resistance values at the same time, and calculate the three-phase resistance unbalance rate.

3. It can be measured at the same time at three times, or can be measured in a single channel in a traditional way. It also has a temperature conversion function, which is easy to use.

4. It has a complete protection circuit and strong reliability.

5. Built-in calendar clock, 500 sets of data storage, retrieval, and printing functions.

6. You can set the resistance's phase sequence, tap position and other printing information.

7. Industrial plastic case, light weight and easy to carry.

8. With audible discharge alarm, the discharge indication is clear, reducing misoperation.

1. Output current: automatically select current (MAX 20A)

2. Range: 0～100Ω

3. Accuracy: 0.2%±2

4. Resolution: 0.1μΩ

1. Working temperature: -20～40℃

2. Ambient humidity: ≤80%RH, no condensation

3. Working power supply: AC220V±10%, 50Hz±1Hz

4. Volume: length 400mm*width 340mm*height 195mm

5. Net weight: 8kg