AEMC 3711 Ground Resistance Tester

Clamp-on ground resistance tester with 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
  • 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 3711 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 simply clamps around the ground conductor or rod and measures the resistance to ground fast and accurately.

The AEMC 3711 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.

Applications for the AEMC 3711 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 3711 clamp-on ground resistance tester ships complete with:

  • Calibration loop
  • 9V Battery
  • Hard case
  • Manual
AEMC 3711 Clamp-on Ground Resistance Tester Specifications
Ground resistance ranges
Auto-ranging 0.01 to 1200 Ω		 Measurement range Resolution Accuracy (% of reading)
0.10 to 1.00 Ω 0.01 Ω ±(2% ±0.02 Ω)
1.0 to 50.0 Ω 0.1 Ω ±(1.5% ±0.1 Ω)
50.0 to 100.0 Ω 0.5 Ω ±(2% ±0.5 Ω)
100 to 200 Ω 1 Ω ±(3% ±1 Ω)
200 to 400 Ω 5 Ω ±(6% ±5 Ω)
400 to 600 Ω 10 Ω ±(10% ±10 Ω)
600 to 1200 Ω 50 Ω Approx:25% ±50 Ω
Current measurement ranges
Auto-ranging 1 mA to 30.00 A RMS		 Measurement range Resolution Accuracy (% of reading)
1 to 299 mA 1 mA ±(2.5% + 2 mA)
0.300 to 2.999 A 0.001 A ±(2.5% + 2 mA)
3.00 to 29.99 A 0.01 A ±(2.5% + 20 mA)
Current measurement frequency 47 to 800 Hz
Current overload OL displayed above 29.99 A RMS
Power source 9V alkaline battery (IEC 6LF22 or NEDA 1604A)
Jaw window diameter 1.25" (32 mm)
Jaw opening 1.38" (35 mm)
Safety rating EN 61010-2-032 (Class 2) Double insulation
Double insulation Yes
CE mark Yes