Extech 382357 Clamp-On Ground Resistance Tester

• Ground resistance measurements down to 0.03Ω with 0.002Ω maximum resolution
• True RMS AC leakage current range of 0.2mA to 30A with 1.000mA max resolution
• Programmable data logging with 116 data points
• Programmable Hi/Lo alarm
• 0.9″ jaw size for large ground rods
• Automatic self calibration when powered on
• 9999 count high contrast LCD display
• Included resistance checkplate confirms meter accuracy
• Electrical noise detection feature prevents inaccurate readings
• Data hold and continuity beeper

The Extech 382357 clamp-on ground resistance tester allows the user to measure ground resistance without the use of auxiliary ground rods. The Extech 382357 clamp-on ground resistance tester measures resistance from 0.03Ω to 1500Ω and True RMS AC Leakage current from 0.2mA to 30.00A. The Extech 382357 clamp-on ground resistance tester features programmable data logging with 116 points, programmable hi/lo alarms, 0.9″ jaw size, self-calibration when powered on, and verification resistors to confirm the accuracy of the meter.

Applications for the Extech 382357 Clamp-On Ground Resistance Tester

• Verify resistance of cellular and communication tower ground grids
• Check utility transmission systems and grounding rods
• Maintenance on electric transportation systems
• Ideal for grounding systems in sub-stations, factories and office buildings