The AEMC 6472 Ground Resistance Tester is a portable instrument that measures bond resistance, ground resistance (with or without clamps), soil resistivity, earth coupling, and step & touch potential. When paired with the GroundFlex™ Adapter Model 6474, it can also test power transmission tower and tower leg ground resistance. This auto-ranging tester measures from 0.01 kΩ to 99.99 kΩ, with adjustable test frequencies from 40 Hz to 5078 Hz, ensuring accurate results even in challenging conditions with high stray currents. This ground resistance tester stores up to 512 test results, which can be recalled on the display or downloaded to a PC using the included DataView® software.
Features
- 4-Pole (4-Point) Fall-of-Potential measurement for very low resistance measurements with manual or automatic frequency selection and automatic lead compensation
- 3-Point Fall-of-Potential measurement
- 3-Point earth coupling measurement
- Manual or automatic frequency scan from 40 Hz to 513 Hz for test accuracy in electrically noisy environments
- Earth coupling testing
- Selectable test voltage 16 or 32V up to 250 mA test current
- 4-Point soil resistivity measurement with automatic calculation of Rho and user selection of Wenner or Schlumberger test method
- 2 and 4 Wire DC resistance measurement (Bond testing) with automatic polarity reversal
- Ground Resistance with 2 clamps (no auxiliary rods)
- Ground Resistance of Pylons with the GroundFlex™ Adapter Model 6474 and GroundFlex™ sensors allow the system to measure leakage current and ground resistance of tower legs without disconnecting the overhead ground conductor
- Includes DataView® software for data storage, real-time display, analysis, report generation and system configuration
- Auto-off power management
- Automatic recognition of all electrode connections and their resistance value
- Stores up to 512 complete test results in internal memory
- Optically isolated USB communication
- Rechargeable NiMH batteries from wall charger or vehicle power
- Rugged dustproof and rainproof field
Specifications
| 3-point measurement range |
0.09 Ω to 99.9 kΩ |
| 3-point measurement resolution |
0.01 Ω to 100 Ω |
| 2 clamp measurement range |
0.1 to 500 Ω |
| 2 clamp measurement resolution |
0.01 to 1 Ω |
| Test voltage |
16 Vdc (+, - or auto polarity) |
| Test current |
Up to 250 mA max |
| Memory capacity |
512 test results (64KB) |
| Power source |
9.6V rechargeable battery pack |
| Resistance measurement accuracy |
±2% of Reading + 2cts |