The KDZR-S40A DC resistance tester can effectively detect the manufacturing defects of transformer coils such as material selection, welding, loose connection parts, missing strands, broken wires and hidden dangers after operation. Three-channel DC resistance tester is a fast test equipment for measuring the DC resistance of transformers, transformers, generators and motor windings. It is suitable for three-phase simultaneous measurement of large capacity star-connected transformers, saving time and improving maintenance efficiency.

Performance characteristics
1, the transformer with neutral point can be measured at the same time, which greatly saves the measurement time;
2, the instrument has the degaussing function, can eliminate the remanence at one time.
3, the instrument resistance measurement range is wide, high resolution, multi-current gear selection.
4, the instrument has perfect anti-potential protection function.
5, the longitudinal test of the DC resistance of the on-load regulator transformer can be completed at one time.
6, the instrument measurement accuracy is high, with anti-interference, shock-proof, easy to carry and other characteristics.
7, 5.0-inch 65K color touch screen, easy to operate.
8, built-in large capacity non-volatile memory, can store 500 sets of data.
9, built-in high-speed micro thermal printer, can print measurement data.
10, built-in high-precision clock, real-time display time.
11, with U disk storage function.

Technical index
Three-phase test:
40A (2*20) Test range: 500μΩ ~ 200mΩ Accuracy: ± (0.2% reading +1.0μΩ)
20A (2*10) Test range: 1mΩ ~ 500mΩ Accuracy: ± (0.2% reading +0.001mΩ)
10A (2*5) Test range: 10mΩ ~ 1.0Ω Accuracy: ± (0.2% reading +0.01mΩ)
2A (2*1) Test range: 100mΩ ~ 5.0Ω Accuracy: ± (0.2% reading +0.1mΩ)
0.2A (2*0.1) Test range: 1Ω ~ 50Ω Accuracy: ± (0.2% reading +0.001Ω)
 
Single-phase test:
40A test range: 200μΩ ~ 500mΩ Accuracy: ± (0.2% reading +0.5μΩ)
20A Test range: 500μΩ ~ 0.8Ω Accuracy: ± (0.2% reading +1μΩ)
10A test range: 1mΩ ~ 2.0Ω Accuracy: ± (0.2% reading +0.001mΩ)
5A Test range: 10mΩ ~ 4.0Ω Accuracy: ± (0.2% reading +0.01mΩ)
1A Test range: 100mΩ ~ 20Ω Accuracy: ± (0.2% reading +0.1mΩ)
0.1A Test range: 1Ω ~ 200Ω Accuracy: ± (0.2% reading +0.001Ω)
 
Resolution: 0.0001μΩ, 5 significant digits
Host size: 420mm×250mm×340mm
Weight: 15kg
 
Conditions of use
Ambient temperature: -10℃ ~ 50℃
Ambient humidity: ≤85℅RH
Power supply: AC220V ±20% mains (50Hz)