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AEMC 4630: Ground Resistence Tester


The AEMC Tester Model 4630 is rugged, easy-to-use and is ideal for maintenance crews performing numerous tests.

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The AEMC Digital Ground Resistance Tester Model 4630 performs earth ground resistance and soil resistivity tests

This direct reading tester 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 specified 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.

Features / Specs:

Range (Auto-ranging) 0 to 2000Ω
Resolution 0.01 to 1Ω
Test Current 0.1 to 10mA
Accuracy  Typical ±(2% Reading +1ct)
Open Voltage 42V peak
Withstanding Voltage 250VAC or 100VDC
Operating Frequency 128Hz square wave
Interference Rejection to high levels of interference voltage (DC, 50/60Hz, harmonics)
Maximum Auxiliary Rod Resistance Current Circuit:
3kΩ @ 20Ω range
30kΩ @ 200Ω range
50kΩ @ 2000Ω range
Voltage Circuit:
50kΩ on all ranges
Response Time 4 to 8 seconds for a stabilized measurement
Display 200 counts, 7 segment LCD, backlight
Power Source 9.6V NiMH rechargeable battery pack; 120/230V 50/60Hz
Battery Life 4500 15-seconds tests, low battery indicator
Dimensions 10.8 x 9.7 x 5.0” (273 x 247 x 127mm)
Weight (with Battery) 7.38 lbs (3.35kg)
Operating Temperature 14° to 131°F (-10° to 55°C)
Storage Temperature -40° to 158°F (-40° to 70°C)
Relative Humidity Up to 90%
Ingress Protection (IP) IP 65 (closed); IP 63 (open)
EMC EN 61326-1
Safety Compliance EN 61557, EN 61010-1, 30V CAT III, Pollution Degree 2


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