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AEMC 4620: 4-Point Ground Resistance Tester (Digital, 4-Point)


The AEMC Tester Model 4620 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 4620 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 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 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 4620 is also available in complete Kits (150ft, 300ft and 500ft).

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 250V AC or 100V DC
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 8 x 1.5V C alkaline batteries
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) 6.28 lbs (2.85kg)
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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