ZQ2502 Type Loop Resistance TesterDetailed product description：

The ZQ2502 circuit resistance tester is a specialized measuring instrument for measuring the resistance of circuit breakers, switch bus contacts, contact components on buses, and other conductive circuits passing through high current contacts. And various tests that require contact resistance measurement in other power supply and consumption system equipment.
Due to oxidation of the contact surface and poor contact fastening, the contact resistance increases. When a large current flows through, the temperature of the contact point rises, which accelerates the oxidation of the contact surface and further increases the contact resistance, leading to serious accidents. Therefore, it is necessary to regularly or periodically measure the contact resistance. The use of ZQ2502 circuit resistance tester can timely monitor changes in contact resistance, detect hidden dangers early, eliminate faults in their early stages, and ensure safe power supply and use.

Main technical performance
Maximum output test current: 100A
Test resistance range: 01~999W
Test resolution: 1W
Test accuracy: Display value of 1%+1 word
Allowable testing duration: 30 minutes
Protection method: overcurrent circuit breaker
Power supply voltage: 220V ± 10% 50Hz