Ground Clamp Meters

 
AEMC 6416 - Ground Resistance Tester
Catalog: 2141.01
  • Maximum Ground Resistance: 1500 Ohms (1.5 K OhmsWhat's This?)
  • Minimum Ground Resistance: 0.01 Ohms
  • Resolution: 0.001 Ohms
  • Resistance Measurement Frequency: 2083 Hz
  • Current Measurement Frequency: 800 Hz
  • Maximum Current Range: 40 A

List Price: $1,675.00

Your Price: $1,507.50

Sign-in for EDU Pricing!

In Stock:
  • Free shipping over $99
  • View Payment Options
AEMC 6417 - Ground Clamp Meters
Catalog: 2141.02
  • Maximum Ground Resistance: 1500 Ohms (1.5 K OhmsWhat's This?)
  • Minimum Ground Resistance: 0.01 Ohms
  • Resolution: 0.001 Ohms
  • Resistance Measurement Frequency: 2083 Hz
  • Current Measurement Frequency: 800 Hz
  • Maximum Current Range: 40 A

List Price: $1,960.00

Your Price: $1,862.00

Sign-in for EDU Pricing!

In Stock:
  • Free shipping over $99
  • View Payment Options
HT Instruments T2000 Earth Ground Clamp Meter
  • Maximum Ground Resistance: 1000 Ohms (1 K OhmsWhat's This?)
  • Minimum Ground Resistance: 0.010 Ohms
  • Resolution: 0.001 Ohms
  • Resistance Measurement Frequency: 1 kHz (1000 HzWhat's This?)
  • Current Measurement Frequency: 60 Hz
  • Maximum Current Range: 30 A

Your Price: $1,495.00

Sign-in for EDU Pricing!

In Stock:
  • Free shipping over $99 - Code: FREESHIP
  • View Payment Options
HT Instruments T2100 Earth Ground Clamp Meter with RS23
  • Maximum Ground Resistance: 1000 Ohms (1 K OhmsWhat's This?)
  • Minimum Ground Resistance: 0.010 Ohms
  • Resolution: 0.001 Ohms
  • Resistance Measurement Frequency: 1 kHz (1000 HzWhat's This?)
  • Current Measurement Frequency: 60 Hz
  • Maximum Current Range: 30 A

Your Price: $1,495.00

Sign-in for EDU Pricing!

In Stock:
  • Free shipping over $99 - Code: FREESHIP
  • View Payment Options
null
null
null
null

Recommended for you

Ground Clamp Meters

The Clamp-on Ground Resistance testing technique offers the ability to measure the resistance without disconnecting the bonding to ground. This type of measurement also offers the advantage of including the bonding to ground and the overall grounding connection resistances. Grounding instrumentation is chosen based on requirements, applications and safety considerations.

Here is a list of several Ground Testing Applications
  • Soil Resistivity- 4 Point Tester
  • Ground Resistance Rods- 3 Point Tester
  • Low Ground Resistance Grids or Mats or Plates- 3 or 4 Point Tester
  • Ground Resistance for Multiple Grounds without disconnecting system- Clamp-On Tester
  • Step and Touch Potential- 4 Point Tester
  • Continuity on Bonding or Grounding -2 or 4 Point Tester
  • Earth Coupling- 3 Point Tester
A grounding system is designed to provide safety for a variety of conditions that may exist
  • Lightening strikes to protect personnel or system components
  • Electrical faults
  • Static Electricity Problems
  • Voltage Regulations for Safety     
A good grounding system will improve the reliability of equipment and reduce the likelihood of damage due to lightning or fault currents. The primary reason that grounding is tested is the fact that resistance to an earth ground rod or system may vary based on changes in climate and temperature and over time. Such changes can be considerable. Over time, corrosion will degrade ground rods and their connections. It is reasonable to consider an annual maintenance program that checks grounds and bonding.

Features to consider when evaluating your selection for Ground Testers
  • Types of Ground Testing to be Evaluated
  • Number of Poles (points) for tests to be completed
  • Display Required
  • Graphics Required
  • Memory Required and Capacity
  • Enclosure IP Ratings
  • Wiring Spools and Additional Rods Needed
  • Wiring  Capable of Being Disconnected for Portable Clamp-On
  • Rechargeable Battery or Field Battery Supply
  • Test Current
  • Safety Rating
  • Resolution
Traditional types of methods for ground testing include
  • Three Point Fall of Potential for Ground Rods and Grids.
  • Four Point Soil Resistivity Testing
  • Touch Potential for Electrical Safety (high ground fault possibility)
  • Two-Point Tests (continuity tests and bonds)
  • Clamp-On, discussed here
Portable Clamp-On Method for Ground Testing

Clamp-on ground resistance testing offers the ability to measure the ground resistance without disconnecting the ground rods or the wiring of the system. This type of measurement also offers the advantage of including the bonding to ground and the overall grounding connection resistances. One of the most important considerations for the portable clamp-on system would be a series-parallel resistance path down-stream from the measurement point that is lower in resistance than the point being measured. Please note figures below for typical Clamp-on placement for measurement.
 
Ground Clamp Wiring Diagram           Grouond Clamp in use at Pole

Applications for Clamp-on Ground Resistance Testers
  • 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
  • Conduct field surveys
  • Use on cell towers and telecommunication sites
  • Use on pools, spas and other consumer installations
For a discussion of the other methods of ground resistance measurement,
see our main category Products > Ground Testers
 

Ground Testing Resources

These links can be used as excellent references for basic Ground Resistance theory. Click the cover to download the PDF

 
getting-down-to-earth AEMC Ground Resistance Testing Fluke Earth Ground Resistance Testers
Megger
Getting Down to Earth
AEMC
Ground Resistance Testing
Fluke
Earth Ground Resistance Testers
X