1 Introduction



JHR5110A Portable DC Resistance Tester is an innovative product that is compact in size, handheld for operation, lighter, and easy to carry.



The product is not only suitable for measuring inductive test objects such as transformers, instrument transformers, and reactors, but also for resistive test objects like copper bars, wires, and switch contacts. The instrument offers fast testing speed and high accuracy.



JHR5110A Portable DC Resistance Tester



2 Package Contents



Please check whether you have received the following items in the handheld DC resistance package:



Standard accessories:



√1 handheld tester



√1 set of test leads (one red, one black)



√1 charger (16.8V)



√1 wrist strap (connected to the handheld tester)



√1 printed user manual



√1 certificate of conformity and factory test report



Optional accessories:



√1 external printer (with printing cable)



√1 wireless temperature measurement module (with 2 rubber rod antennas)



√1 charger (4.2V)



3 Features




  • Powered by lithium battery or 220V AC with automatic adaptation; a single charge allows continuous DC resistance testing of hundreds of transformers, making the testing process simple and convenient.

  • Outputs six current levels, provides 10A output current and 25V output voltage, and can automatically select the current for convenience and speed.

  • Wide measurement range and high accuracy: 500uΩ to 50KΩ.

  • Equipped with resistance temperature conversion function, optional wireless temperature measurement module to measure the temperature of the test object in real time, ensuring the accuracy of the resistance converted value.

  • Multiple protection functions including back-EMF protection, disconnection protection, power-off protection, and overheat alarm.

  • 5.6-inch industrial-grade high-brightness color LCD screen, still clearly visible under strong sunlight.

  • Equipped with an external printer for convenient data printing.

  • Supports local storage and USB drive storage.