Datasheet:  4620-AEMC |
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| AEMC 4620 4-Point Ground Earth Resistance Tester Description: |
AEMC 4620 4-Point Ground Earth Resistance Tester performs ground resistance and soil resistivity tests. This direct reading testers measures from 0 to 2000Ω, and is auto-ranging, so it automatically seeks outs the optimum measurement range.
The Model 4620 is rugged, easy-to-use and is ideal for maintenance crews performing numerous tests. It exceeds mechanical and safety specifications for shock, vibration and drop tests called out in IEC standards.
AEMC 4620 is designed to reject high levels of interference, so it can be used under difficult conditions such as high stray currents that normally affect accuracy.
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| AEMC 4620 4-Point Ground Earth Resistance Tester Characteristics: |
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Measures soil resistivity (4-Point) method
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Measures ground resistance (2- and 3-Point) Fall-of-Potential method
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Step voltage tests and touch potential measurements
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Auto-Ranging: automatically selects the optimum range
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Designed to reject high levels of noise interference
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Extremely simple to operate: connect - press - read
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LED on faceplate informs operator of high input noise, high auxiliary rod resistance and fault connections
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Battery powered
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Rugged, dustproof and rainproof field case
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Can also be used for continuity tests on bonding
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Color-coded terminals
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| AEMC 4620 4-Point Ground Earth Resistance Tester Applications: |
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Three-Point measurements of resistance to ground of ground rods and grids. Three-Point measurements are generally used when the electrode or grid can be easily disconnected, if corrosion is suspected, or where ground faults are unlikely to occur
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Four-Point tests or soil resistivity measurements. Locating areas of lowest soil resistivity is essential for achieving an economical grounding installation
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Touch potential measurements, an alternative to 3-Point tests. A recommended test when the ground cannot be disconnected, where ground faults are highly likely, or when the "footprint" of grounded equipment is comparable to the size of ground to be tested
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| AEMC 4620 4-Point Ground Earth Resistance Tester Specifications: |
| Measurement Ranges |
0.00 to 19.99Ω; 20.0 to 199.9Ω; 200 to 1999Ω
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| Resolution |
10mΩ (0.00 to 19.99Ω); 100mΩ (20.0 to 199.9Ω); 1Ω (200 to 1999Ω)
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| Open Voltage |
Below 42V peak for all ranges
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| Resistance Frequency |
128Hz square wave (for all ranges)
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| Test Current |
10mA (0.00 to 19.99Ω); 1mA (20.0 to 199.9Ω); 0.1mA (200 to 1999Ω)
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| Accuracy |
±2% of reading ±1ct(0.00 to 19.99Ω); ±2% of reading ±1ct (20.0 to 199.9Ω); ±2% of reading ±3cts (200 to 1999Ω)
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| Auxiliary Electrode Influence |
Max Res. in Current Circuit: 3kΩ (0.00 to 19.99Ω); 30kΩ (20.0 to 199.9Ω); 50kΩ (200 to 1999Ω)
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| Power Source |
Eight C Cell Alkaline Batteries
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Need Technical Advise? Please Call: 602-795-4033
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