AEMC Model 4630
Ground Tester(Rechargeable Battery)

- Measures soil resistivity(4-Point) method
- Measures ground resistance(2- and 3-Point) Fall-of-Potential method
- Step voltage tests and touch potential measurements
- Auto-Ranging: automatically selects the optimum range
- Designed to reject high levels of noise interference
- Extremely simple to operate: connect – press – read
- LED on faceplate informs operator of high input noise, high auxiliary rod resistance and fault connections
- AC powered with rechargeable NiMH batteries
- Rugged, dustproof and rainproof field case
- Can also be used for continuity tests on bonding
- Color-coded terminals
- 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 in circumstances where ground faults are unlikely to occur
- Four-Point tests or soil resistivity measurements. Locating areas of lowest soil resistivity is essential for achieving an economical grounding installation
- Touch potential measurements, an alternative to 3-Point tests in evaluating electrical safety. This test is recommended when the ground cannot be disconnected, where ground faults are highly likely to occur, or when the “footprint” of grounded equipment is comparable to the size of the ground to be tested.

The Digital Ground Resistance Tester Model 4630 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 4630 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. It 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. The Model 4630 is powered by 9.6V, 3.5 Ah NiMH rechargeable batteries. A built-in recharge circuit, powered from 120/230V 50/60Hz line, also provides for testing while recharging.


color-coded leads on spools (red and blue),
one 30 ft lead (green), two 14.5″ T-shaped auxiliary
ground electrodes, one set of five spaded lugs,
100 ft tape measurer and carrying bag.

Catalog #2135.35

two 300 ft color-coded leads on spools (red and
blue), two 100 ft color-coded leads (green and
black), four 14.5″ T-shaped auxiliary ground
electrodes, one set of five spaded lugs,
100 ft tape measurer and carrying bag.

Catalog #2135.36

two 500 ft color-coded leads on spools (red and
blue), two 100 ft color-coded leads (green and black),
one 30 ft lead (green), four 14.5″ T-shaped auxiliary
ground electrodes, one set of five spaded lugs,
100 ft tape measurer and carrying bag.

Catalog #2135.37

built into a double case. This extra
rugged construction provides
double insulation, maximum field
durability and ease of serviceability.



ELECTRICAL | Model 4620 | |||
Ground Resistance | Auto ranging | |||
Range | 20Ω | 200Ω | 2000Ω | |
Measurement | 0.00 to 19.99Ω | 20.0 to 199.9Ω | 200 to 1999Ω | |
Resolution | 10mΩ | 100mΩ | 1Ω | |
Open Voltage |
≤42V peak
|
|||
Resistance Measurement Frequency |
128Hz square wave
|
|||
Test Current | 10mA | 1mA | 0.1mA | |
Accuracy | ±2% of rdg ± 1ct | ±2% of rdg ± 1ct | ±2% of rdg ± 3cts | |
Auxilliary Electrode Influence | ||||
Current CircuitVoltage Circuit | 3kΩ2000Ω | 30kΩ50kΩ | 50kΩ50kΩ | |
Interference | Rejects high levels of interference voltage (DC, 50 to 60Hz, harmonics):DC voltage in series with X: 20V; AC voltage in series with Y: 13V peak;AC voltage in series with Z: 32V peak | |||
Response Time | Approximately 4 to 8 seconds for a stabilized measurement | |||
Withstanding Voltage | 250VAC or 100VDC | |||
Power Source | 120/230V 50/600HzRechargeable 9.6V, 3.5 Ah NiMH batteries | |||
Battery Life | 1800 15-second measurements (approximate) | |||
Fuse Protection | 0.1A, >250V, 0.25 x 1.25″; 30kA Interrupt Capacity |
General Specifications | |
Display | 31/2 digit, 0.71″ (18mm) high; 2000-counts; electroluminescent blue backlight LCD also indicates overrange, test lead shorts and lead reversals |
Backlit | Blue electroluminescent |
Connection | 4mm recessed banana jacks |
Software | DataView® graphing, analysis and reporting software |
Operating Temp. | 114° to 122 °F (-10° to 50°C) |
Storage Temp. | -40° to 158°F (-40° to 70°C) |
Dimensions | 10.8 x 9.7 x 5.0″ (273 x 247 x 127mm) |
Weight | 7.38 lbs (3.35kg) |
Case | Polycarbonate |
SAFETY | |
Protection | IP54 with cover closed |
Mechanical Shock | EN 61557 |
Vibration Test | EN 61557 |
Drop Test | EN 61557 |
Dielectric Test | 3kV, 50/60Hz, 1 min. between four interconnected measuring terminals and any external metal ground |
Safety Rating | EN6101-1 50V Cat IV, Pollution Degree 2 |
Double Insulation | Yes |
CE Mark | Yes |


- Model 3711, [2117.60] Ground Resistance Tester (Clamp-On)
- Model 3731, [2117.61] (Clamp-On) with memory and alarm
- Model 3620, [2114.90] Ground Resistance Tester (Analog, 3-Point)
- Model 3640, [2114.92] Ground Resistance Tester (Digital, 3-Point)
- Model 6470, [2135.01] 4-Point Ground Resistance Testers
- Model 4610, [2114.94] Ground Resistance Tester (Digital, 4-Point)
- Model 4620, [2130.43] Ground Tester (Battery Powered)
- Model 4630, [2130.44] Ground Tester (Rechargeable Battery)
.jpg)