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AEMC 4630 Ground Resistance Tester

Manufacturer part number: 4630
(Digital, 4-Point)
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Key Features and Functions 

The Digital Ground Resistance Tester Model 4630 performs 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.

  • 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
Range (Auto-ranging)0 to 2000Ω
Resolution0.01 to 1Ω
Test Current0.1 to 10mA
Accuracy  Typical±(2% Reading +1ct)
Open Voltage42V peak
Withstanding Voltage250VAC or 100VDC
Operating Frequency128Hz square wave
InterferenceRejection to high levels of interference voltage (DC, 50/60Hz, harmonics)
Maximum Auxiliary Rod ResistanceCurrent Circuit:
3kΩ @ 20Ω range
30kΩ @ 200Ω range
50kΩ @ 2000Ω range
Voltage Circuit:
50kΩ on all ranges
Response Time4 to 8 seconds for a stabilized measurement
Display200 counts, 7 segment LCD, backlight
Power Source9.6V NiMH rechargeable battery pack; 120/230V 50/60Hz
Battery Life4500 15-seconds tests, low battery indicator
Dimensions10.8 x 9.7 x 5.0” (273 x 247 x 127mm)
Weight (with Battery)7.38 lbs (3.35kg)
Operating Temperature14° to 131°F (-10° to 55°C)
Storage Temperature-40° to 158°F (-40° to 70°C)
Relative HumidityUp to 90%
Ingress Protection (IP)IP 65 (closed); IP 63 (open)
EMCEN 61326-1
Safety ComplianceEN 61557, EN 61010-1, 30V CAT III, Pollution Degree 2
Description

Key Features and Functions 

The Digital Ground Resistance Tester Model 4630 performs 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.

  • 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