WXHL-200A Contact Resistance Tester

  • Nowadays Power Systems widely use model QJ44 DC double arm bridge to measure contact resistance (DC resistance and Loop resistance of high-voltage circuit breaker) while the minimum current of such model is 1mA which hardly find the decrease of cross-sectional area of transformers’ conductive circuit conductor.

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WXHL-200A Contact Resistance Tester


The good or bad of conductivity of breaker(hereinafter referred to as switch) conductive circuit, play an important role in guarantee the safety operation of switch. The conductivity performance can be reflected by the value of conductive circuit resistance. For this reason IEC standard and manufacturers all required testing the circuit resistance, and also have prescribed index for the circuit resistance of each kind switch. Before, normally use double bridge. But, because the voltage and current value are very small, when there are impurities between dynamic and static contact or the contact got surface oxidation, the dispersivity of test data is larger. At the same time, the anti-interference performance of bridge is not good, so the national standard requires that must test with DC more than 100A. The circuit resistance tester is a product developed by our company which in order to meet GB50150-2006 and DL/T 845.4-2004 regulations, and it was widely used in measurements of various switch’s contact resistance、circuit resistance, cable and wire、weld joint contact resistance.


1.The test current value is big, completely conform the national standard requirement which related to contact resistance test.

2.The test current was came from the 100A/200A high precision switch type constant current power supply, without manual adjust, the test is rapid and accurate.

3.Adopt four terminal connections; effectively eliminate the influence to the test result from resistance of test wire.

4.Test speed is fast, the USB interface can connect with PC,upload test data. 

5.Working long hours, equipped with overheat protection circuit; the instrument is reliable and steady.

6.Easy and simple operation, light weight.


1.Test Current :

Test Current

2.Testing Range :

Test Current
Testing Range

3.Minimum resolution 0.01μΩ

4.Accuracy 1%±0.5μΩ  

5.Power supply AC220V±10%  50Hz

6.Consumed power

Model Power

7、Operating temperature -20~40℃

8Relative humidity ≤80%RH, non-condensate

9、Weight :

5 Kg
6 Kg

1.When can I get the price? 

We usually quote within 6 hours after we get your inquiry. If you are very urgent to get price, please call us or tell us in your email so that we will regard your inquiry priority.
2. What about the leading time for production?
Honestly, it depends on the order quantity and the product. Usually our leading time is within 7 working days after order confirmed.
3. What is your payment terms?
We accept EXW,FOB, CFR, CIF, ect. You can choose the one which is the most convenient and cost effective for you.
4. How much will be the Shipping cost and time?
This will depend on the size of your goods and the method of shipping (by sea/ by air/by Express) and your designated port or airport. We will be grateful if you can spare us some minutes to evaluate the cost based on the information provided.
5. Could you please tell me the Warranty Period of your product?
Our warranty period is one year free and lifelong maintenance. If the product is damaged (if not man-made damage), in the first year,we will send free parts for replacement. Over warranty, maintenance is paid service.
6. What kind of Certificate can you provide?
We can provide the CE mark, ISO 9001 quality certificate, third party calibration certificate(CNAS) and factory test report.
7. Do you have Technical Backup to all customers from different countries?
To be sure,our technical support is always available and quick response.
We are manufacturer with much on-site testing experience, thus we know how to deal with your problems. Moreover, our engineers can go to your country to support if need.  

contact US

  • Add : No. 335, B Dist., No. 4 Factroy, Optic Valley Industrial Area, Liufangyuan South Road No. 9, 
            Donghu High Tech Dvpt. Zone, Wuhan, Hubei, China

  • Email: sales02@wghipot.com

  • Skype:+86 13618663321

  • Wechat: WG-Hipot

  • WhatsApp:+86 13618663321

  • Tel : +86-27-87888781

  • Fax: +86-27-87888781


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