200A Bluetooth Contact Resistance Tester

Contact Resistance Tester is a professional high-current micro-ohm measuring instrument developed in compliance with DL/T845.4-2004 and JJG1052-2009 industry standards. Equipped with 5 gears of test current (20A/50A/100A/150A/200A) and a 7-inch touch TFT color screen, it realizes accurate measurement of loop and contact resistance of high-voltage switchgear, with functions of data storage, printing, Bluetooth communication and USB export. With stable performance exceeding imported similar products, it is specially designed for on-site maintenance of high-voltage switches and factory loop resistance testing in power systems.

JH2008T contact resistance tester 200a is an upgraded high-performance measuring instrument tailored for solving the inaccuracy problem of low-current testing of electrical contact resistance in power systems. Adopting ergonomic touch control panel design and integrated with advanced high-frequency switching power supply and digital circuit technology, it perfectly meets the industry standard requirement of no less than 100A test current for contact resistance test of high-voltage switchgear such as circuit breakers and isolation switches, effectively eliminating the interference of oil film and oxide layer on contact surfaces and reflecting the true contact resistance value of equipment.The instrument has a wide measurement range of 0-125mΩ with a minimum resolution of 0.001μΩ and high measurement accuracy of ±(reading×0.5%+1μΩ), ensuring ultra-precise data acquisition. It provides 5 adjustable DC test current gears from 20A to 200A, and the measurement time can be customized from 5 to 60 seconds, flexibly adapting to different testing scenarios of high-voltage switch equipment. Equipped with an 8.0V constant current and voltage-limiting test power supply, it supports Bluetooth communication matching State Grid digitalization specifications, realizing seamless connection with power system digital management.

With a 7-inch TFT color touch screen, the operation is intuitive and simple; the instrument can store up to 100 sets of test data, and supports on-site printing, USB data export and software update, facilitating data archiving and post-analysis. Weighing only 7.2kg (excluding cables) with a compact volume of 420mm×340mm×200mm, it is easy to carry and deploy for on-site testing, and can work stably in the environment of -10~50℃ and relative humidity ≤90%. It is an essential professional testing instrument for power supply departments, high-voltage switch manufacturers and maintenance teams, with comprehensive performance surpassing imported high-current micro-ohmmeters.