110kV/220kV Substation Series Testers

  • Handheld Contact Resistance Tester(100A) JYL | Kingrun - 副本
Handheld Contact Resistance Tester(100A) JYL | Kingrun - 副本

Handheld Contact Resistance Tester(100A) JYL | Kingrun - 副本

  • Suitable for Switchgear and HV Circuit Breaker Contact Resiatnce Testing
  • Built-in lithium Battery Test 500 Times by One Charge
  • Used in 1000kV Substations
  • Max. 100A Output Current
  • Product description: Max.output current can reach to 100A, so it is suitable for contact resistance testing of vacuum,SF6 & Vacuum circuit breaker, disconnect switch and switchgear,transformer bushing,welding joints,bus-b

What is Contact Resistance and the Importance of Measuring Contact Resistance:

As a high current passes through a pair of mechanically independent metallic contacts, the contact resistance must be as low as possible. Increasing the contact resistance of the contact often causes a large voltage drop on the contact, which reduces the input power of the load equipment. If the contact resistance of one or two contacts becomes large, the three-phase voltage of the load equipment will be unbalanced, causing phase loss operation.

If the contact resistance is too large, great heat will be generated, which can make the metal discolor or even melt, damage the insulation layer, cause equipment failure, and even fire of flammable materials.So we need to make regular measurements of the dynamic and static contact resistance of the contacts by Contact Resistance Tester to ensure that the contacts being tested are in good contact.

High contact resistance will lead to equipments burn out.

JYL Circuit breaker contact resistance tester is a new generation of contact resistance tester based on IEEE C57.09-1999(5.15) contact resistance test standard and got ILAC.MAR calibration certification, the tester is just 1.9kgs with built-in rechargeable battery, so it is suitable for site testing work. JYL can satisfy the measurement of contact resistance such as high-voltage switchgear, disconnect switch, SF6 & Vacuum circuit breaker, medium voltage CT, transformer bushing joints, GIS cabinet, bus-bar joints, earth leading contact, cable termination connection, welding joints, relay metal contact resistance and so on.

High Voltage Circuit Breaker Contact Resistance Testing:

JYL Contact Resistance Tester Functions:

1. Built-in blue tooth communication function.

2. The output current is up to 100A which is suitable for most of the contact resistance items.

3. Test contact resistance rang:0.1 µΩ to 5mΩ

4. Tester 's shell has the function of insulation, anti creep, anti-wind, and anti-sand.

5. Anti-power frequency interference that can make sure the test precision in high frequency circumstances .

6. Equipped with highlight 5.6 inch color touch screen, so the tester can be used both indoor and outdoor.

7. With the function of monitoring and protecting the Battery power and the temperature of tester.

8. Flash disk interface for exporting data.

9. With data storage function, it can store 100 sets of testing data.

10. With function of automatic shutdown(shutdown without operation exceeding 5 minutes).

13. JYL circuit breaker contact resistance tester has built-in lithium battery(12V/5.2AH,Charging time is about 3 hours using special charger JS-042203(DC4.2V/2A*3 sets), not need AC power supply, so JYL contact resistance tester is suitable for field contact resistance testing.

JYL select series NEC Microprocessor to make sure high testing accuracy

JYL Contact Resistance Tester Technical specification:


JYL Handheld contact resistance tester

Output current



Test range




±(reading*0.5% ± 1μΩ)

Current accuracy

± 5%

Minimum resolution


Output voltage

about 2.0V

Testing Time

Quick/10s / 20s / 30s / 40s / 50s / 60s (optional)

Testing times

>500 times 

(100A “quick” mode with 10 mΩ load by one charge)

Resistance of special test cable


Temperature in operation

-20℃ ~40℃

Relative humidity

≤80%, No dew

Volume / Weight

L210mm x W150mm x H70mm / 1.9kg

JYL Contact Resistance Testing Connection(Circuit Breaker):

CALIBRATION CERTIFICATE FROM ILAC.MRA(The world's most stringent calibration testing agency)

JYL's Main Application Object Range:

The 3 Most Popular Manufacturers of Contact Resistance Testers in the World:

Megger Contact Resistance Tester Omicron Contact Resistance Tester Kingrun Contact Resistance Tester

All Kingrun Testers will be Delivered by International Air Express for Free!

If you would like to learn JYL Contact Resistance Tester price, please click here for quick quotation: