20A 50A Transformer DC Resistance Tester /Winding Resistance Tester
Introduction about the Transformer DC resistance tester
Check the welding quality of the winding joints and whether the winding have inter-turn short circuits. 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.
Parameters of the Winding resistance tester
|
Item |
Parameter |
Inaccuracy |
|
Test Current |
<20mA、2.5A、5A、10A、20A、50A |
|
|
Range |
40μΩ～400mΩ （50A） 500μΩ～2Ω （10A） |
accuracy：±(0.2%+2digit) |
|
10Ω-20KΩ （<20mA） |
accuracy：±(0.5%+2digit) |
|
|
Best Resolution |
0.1μΩ |
|
|
Display |
LCD |
4 effective digits for resistance value |
|
Storage |
1000 sets |
|
|
Environmental |
Operating Temp.:0℃～40℃ |
|
|
Relative Humidity |
<90%RH，non-condensing |
|
|
Power Supply |
AC 220V±10V，50Hz±1 Hz |
Fuse 5A |
|
Max Power |
1000 W |
|
|
Dimension |
400×225×350（mm） |
|
|
Weight |
Instrument Box 15.5KG Wire Box:6KG |
|
Features of the Transformer DC Winding Resistance Tester
1.Download app (Android) to control instrument completely, upload test data for easy reference.
2.7-inch high resolution LCD touch screen, easy on-site operation. Good visibility under strong light.
3.New power supply technology with multiple current gears and a wide measurement range. The current can be automatically selected according to the load, which is suitable for DC resistance measurement of medium-sized and large transformers and voltage transformers.
4.A complete and reliable protection system, protect instrument from impact of back EMF.
5.Internal data storage up to 1000 sets.
6.RS232 port and USB Port for data storage and PC communication.
7.Built-in high-speed micro printer.
8.With audible discharge alarm, clear discharge instructions.
