Portable Loop Resistance Tester 100A 200A High Current Micro-Ohmmeter for Circuit Breaker Contact, Switchgear, Busbar and Disconnector Testing

The Portable Loop Resistance Tester is designed for engineers who need to perform low-resistance measurements directly at substations, switchyards and industrial electrical installations.

The compact design combines a high-current DC source, micro-ohm measurement circuit, digital display and data management functions into one portable instrument.

Compared with large laboratory equipment, a portable loop resistance tester can be transported directly to the testing location and connected to the equipment under test.

• Circuit breaker loop resistance test
• Contact resistance measurement
• Switchgear resistance test
• Busbar resistance test
• Disconnector resistance test
• Isolator contact test
• Cable connection resistance test
• Micro-ohm measurement
• High-current injection
• Automatic measurement
• Data storage
• Report generation

• Lightweight construction
• Rugged field design
• Easy cable connection
• High-brightness display
• Battery-powered options
• USB data transfer
• Internal memory
• Optional thermal printer

Some current portable models use lithium batteries, selectable current and internal storage specifically to make repeated field testing easier.

Q: Is the loop resistance tester suitable for field use?
A: Yes. Portable models are specifically designed for field commissioning and maintenance.

Q: Can the instrument operate from a battery?
A: Battery-powered configurations are available for certain models.

Q: Can test results be exported?
A: Depending on the model, results can be stored internally and transferred through USB or other communication interfaces.