Transformer DC resistance tester is a must-test item in transformer manufacturing for semi-finished products, finished products factory test, installation, overhaul, after changing the tap changer, handover test and preventive test of the power department. You can check the welding quality of the winding joints and whether the windings have short-circuits between turns. You can check whether the contact of each position of the voltage tap switch is good, whether the actual position of the tap changer matches the indicated position, whether the lead wire is broken, and the multi-stranded wire is wound in parallel. Whether there is stock breakage, etc. The instrument adopts a brand-new power supply technology, which has the characteristics of small size, light weight, large output current, good repeatability, strong anti-interference ability, and perfect protection functions. The whole machine is controlled by a high-speed single-chip microcomputer, with a high degree of automation, with automatic discharge and discharge alarm functions. The instrument has high test accuracy and easy operation, which can realize the rapid measurement of transformer direct resistance.

1. High degree of automation and easy operation.

2. Adopting high-frequency switching power supply technology with large output current, suitable for DC resistance measurement of large and medium-sized transformers.

3. The protection function is perfect, which can reliably protect the impact of the back EMF to the instrument, and the performance is more reliable.

4. With audible discharge alarm, clear discharge instructions, reducing misoperation.

5. The response speed is fast, and the on-load tap-changer can be directly switched in the measurement state, and the instrument automatically refreshes the data.

6. The vertical chassis structure is adopted, which is convenient for on-site use.

7. Intelligent power management technology, the instrument always works in a lower power state, effectively reducing the internal heating of the instrument and saving energy.

8. Dot matrix LCD, Chinese menu.

9. Thermal printer, high speed, silent, print out test results.

1. Output current: 5A, 10A, 20A, 40A, 100A

2. Range: 　10μΩ～100mΩ (100A range)

50μΩ～500mΩ (40A file)

100μΩ～1Ω (20A file)

　　　　　 500μΩ～2Ω (10A file)

1mΩ～4Ω (5A file)

3. Accuracy: 0.2%

4. Resolution: 0.1μΩ

5. Working temperature: -10～40℃

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

7. Working power supply: AC220V±10%, 50HZ±1HZ