AEMC 4630: Ground Resistence Tester

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

Documentation:

Equipment Brochure