This advanced instrument utilizes high-frequency, high-power, constant-current switching power supply technology to accurately measure micro-ohm contact resistance. Designed for comprehensive testing applications, it is widely used for measuring contact resistance, loop resistance, and contact resistance of cables, wires, and welds on various switches and electrical appliances.

With precise measurement data and stable performance, this tester meets the rigorous requirements of on-site high-voltage switchgear maintenance by power and power supply departments, as well as loop resistance testing in high-voltage switchgear manufacturing facilities.

• High test current fully compliant with national standards for contact resistance testing
• High output voltage and wide measurement range for versatile applications
• Test current derived from high-precision, high-current constant-current power supply
• Automatic operation eliminates manual adjustment for fast, accurate testing
• Four-terminal wiring effectively eliminates test lead resistance influence
• 65K true-color LCD display with ultra-small pixels (320x240 resolution)
• Built-in perpetual calendar and power-off memory functionality
• Automatically stores 1,000 sets of test data for immediate access
• Equipped with micro printer, RS232, and USB interfaces
• Computer communication and USB flash drive storage capabilities
• Intelligent power management for energy-efficient operation