The DC resistance of transformers is a commonly measured item in the manufacturing of semi-finished and finished products, factory testing, installation, handover testing, and preventive testing by power departments. It can effectively detect manufacturing defects such as loose materials, welding, connection parts, missing strands, and broken wires in transformer coils, as well as hidden dangers after operation. In order to meet the needs of rapid measurement of transformer DC resistance, Kaidi Zhengda Company has developed the KDZR series DC resistance tester using its own technological advantages.

 
The KDZR-10A DC resistance tester adopts programmable linear constant current source technology, which has the characteristics of large output current, multiple current levels, small size, and light weight. The whole machine is controlled by a microcontroller and automatically completes functions such as self checking, data processing, display, saving, printing, etc. It adopts precision electronic measurement technology, which makes the instrument measurement accurate, wide measurement range, easy to operate, and can quickly measure the inductive resistance of transformers and voltage transformers.
 

1. By adopting high-precision electronic measurement technology and high-performance microcontrollers, the instrument has the characteristics of high measurement accuracy, stable numerical values, and good repeatability.
2. The instrument has two measurement methods, automatic and manual. It can automatically select the current according to the load situation, with multiple current levels and a maximum output of 10A current.
3. It has functions such as printing, storage, and real-time viewing of data.
4. Adopting a large screen and menu operation, the interface is good, clear at a glance, and easy to operate.
5. The micro printer is a thermal printer with fast speed and can directly install printing paper on the surface.
6. It has functions such as automatic discharge and discharge sound alarm indication.
7. Manage data within the device through RS232 serial port to achieve paperless office.

1. Output current: 10A, 5A, 1A, 100mA, 10mA, 1mA
2. Range: 2 Ω -2K Ω (1mA range)
0.2 Ω -200 Ω (10mA range)
20m Ω -20 Ω (100mA range)
2m Ω -2 Ω (1A gear)
0.4m Ω -400m Ω (5A gear)
0.2m Ω -200m Ω (10A level)
3. Accuracy: 0.2% ± 2 μ Ω
4. Resolution: 1 μ Ω
5. Working temperature: -20~40 ℃
6. Environmental humidity: ≤ 90% RH, no condensation
7. Working power supply: AC220V ± 10%, 50HZ ± 1HZ