The measurement of DC resistance is a necessary item for semi-finished and finished product factory testing, installation, handover testing, and preventive testing in the manufacturing of inductive coils such as transformers, transformers, reactors, and electromagnetic operating mechanisms. It can effectively detect manufacturing defects such as material selection, welding, loose connection parts, missing strands, and broken wires of inductive coils, as well as hidden dangers after operation. In order to meet the needs of rapid measurement of DC resistance in inductive coils, our company has developed a DC resistance tester using our own technological advantages. This instrument adopts a brand new power technology and has the characteristics of small size, light weight, wide testing range, strong anti-interference ability, complete protection function, and large screen color LCD display. The whole machine is controlled by a microcontroller, which automatically completes self inspection and data processing, and has automatic discharge and discharge indication functions. The instrument has high testing accuracy, easy operation, and can achieve rapid measurement of direct resistance.  

1. The instrument provides 6 output current options, with a maximum current of 20A and a minimum current of<5mA, suitable for measuring the DC resistance of more types of transformers and mutual inductors.

2. The instrument has a relatively wide measurement range (from 100 μ Ω to 100K Ω).

3. Faster response speed, can directly switch to on load tap changer in measurement state, and the instrument automatically refreshes data.

4. The instrument has an audio discharge alarm function, clear discharge indication, and reduces misoperation.

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

6. The instrument adopts a 7-inch color LCD screen, with a clear and beautiful interface display, and can print and output results in real time.

7. The instrument can be set with two versions of operation interface in Chinese and English, and can be configured according to customer needs.

8. Equipped with RS485 communication interface, it can transmit test data to the background.

9. Large storage capacity, capable of storing up to 500 test records.

10. Equipped with a USB interface, it can transfer test data to a USB drive.

11. The parameter settings are more complete, allowing for the setting of the transformer's test winding, tap position, test phase, test sample temperature, conversion temperature, etc.

12. The instrument adopts an industrial plastic shell chassis, which is easy to carry and improves its service life.

Technical Parameter