Transformer DC resistance is a project in transformer manufacturing that includes semi-finished and finished product factory testing, installation, major repairs, changes to tap changers, handover testing, and preventive testing by power departments. It is possible to check the welding quality of the winding joints and whether there is a turn to turn short circuit in the winding. It can also detect whether the various positions of the voltage tap changer are in good contact, whether the actual position of the tap changer matches the indicated position, whether the lead wire is broken, and whether there are broken wires when multiple wires are wound together. In order to meet the needs of rapid measurement of transformer DC resistance, our company's developed DC resistance tester adopts a new power supply technology, which has the characteristics of small size, light weight, large output current, good repeatability, strong anti-interference ability, and complete protection functions. The whole machine is controlled by a high-speed microcontroller, with a high degree of automation and automatic discharge and discharge alarm functions. The instrument has high testing accuracy, easy operation, and can achieve rapid measurement of transformer direct resistance.

1. The whole machine is controlled by a high-speed microcontroller, with a high degree of automation and easy operation.

2. The instrument adopts a new power technology, with multiple current levels and a wide measurement range, suitable for measuring the DC resistance of large and medium-sized transformers.

3. The protection function is complete and can reliably protect against the impact of back electromotive force on the instrument, making the performance more reliable.

4. It has an audible discharge alarm, clear discharge indication, and reduces misoperation.

5. Intelligent power management technology ensures that the instrument operates in a low-power state, effectively saving energy and reducing heat generation.

6. Seven inch high brightness touch color LCD, clear display under strong light, full touch screen operation, free switching between Chinese and English.

7. The instrument comes with a perpetual calendar clock and power down storage, which can store 1000 sets of test data for easy access at any time.

8. The instrument has Bluetooth communication, RS232 communication, and USB interface for computer communication and USB data storage.

9. Equipped with a panel type micro printer, it can print measurement results in Chinese.

10. The instrument can use an Android phone or tablet, follow the WeChat official account, download the APP, control the instrument through the whole process of software, and store and upload test data for easy reference.