AEMC 3731 Ground Resistance Tester

Clamp-on ground resistance tester with alarm, data logging and a measurement range from 0.1 Ω to 1200 Ω .

Features

  • Direct reading of ground resistance from 0.1 Ω to 1200 Ω
  • Measure down to 0.1 Ω with resolution of 0.01 Ω
  • Direct reading of continuity and ground loop resistance
  • Direct reading of ground leakage or phase current from 1 mA to 30 A RMS
  • Jaw design with large 1.25" (32 mm) window - accomodates up to 1000 kcmil cables
  • Alarm function with adjustable set point and buzzer for quick field checks
  • Memory function to store 99 field measurements for later retrieval and analysis
  • Auto-off for power management
  • Meets EN 61010, Cat III
  • CE Mark and UL approved and double insulated
  • Fast settling time (approximately one second)
  • High immunity to electrical noise for work around transmission towers and substations

The AEMC 3731 clamp-on ground resistance tester measures ground rod and grid resistance in any environment without the use of auxiliary ground rods. Clamp-on ground resistance testers are used on multi- grounded systems without disconnecting the ground under test. The 3731 simply clamps around the ground conductor or rod and measures the resistance to ground fast and accurately.

The AEMC 3731 clamp-on ground resistance tester includes a current measurement function. The probe's high sensitivity enables measurement of leakage current flowing to ground or circulating in ground loops down to 1 mA as well as neutral and phase currents to 10 A RMS. This feature provides additional information, which is vital in distribution ground networks carrying higher levels of noise and harmonics, that affect power quality.

The AEMC 3731 clamp-on ground resistance tester offers an alarm function and a memory (logging) function. In the alarm mode, the probe will audibly and visually indicate readings beyond set point. The user may also have the alarm initiated above or below the set point. This alarm feature permits quick field checks where "pass" or "fail" readings will suffice.

Applications for the AEMC 3731 clamp-on ground resistance tester:

  • Measure electrical ground rod and grid resistance
  • Use on multi-grounded systems without disconnecting the ground rod under test
  • Measure resistance and continuity of grounding loops around pads and buildings
  • Measure leakage current flowing to ground or circulating in ground systems

The AEMC 3731 clamp-on ground resistance tester ships complete with:

  • Calibration loop
  • 9V Battery
  • Hard case
  • Manual