Ground Resistance Tester Model 4620

The 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).

Pool Grounding 2 Pole Test Demo

Check out this great step-by-step pool grounding demonstration video using Model 4620 offered by

NOTE: Our complete catalog is not available for direct online purchase, refer to the Status Column for purchasing options. Items that do not have an Add to Cart button must be purchased from an Authorized Distributor.
Model Cat. # Description List Price Quantity/Status Distributor Stock Check
4620 2130.43 Ground Resistance Tester Model 4620 $1,299.00 In stock at factory. Find a Distributor
4620 Kit-150ft 2135.19 Ground Resistance Tester Model 4620 Kit-150ft $1,879.00 Consult Factory for Availability
4620 Kit-300ft 2135.20 Ground Resistance Tester Model 4620 Kit-300ft $2,039.00 Consult Factory for Availability
4620 Kit-500ft 2135.21 Ground Resistance Tester Model 4620 Kit-500ft $2,179.00 Consult Factory for Availability
Model4620
Cat. #2130.43
DescriptionGround Resistance Tester Model 4620
List Price$1,299.00
In stock at factory. Find a Distributor
Model4620 Kit-150ft
Cat. #2135.19
DescriptionGround Resistance Tester Model 4620 Kit-150ft
List Price$1,879.00
Consult Factory for Availability
Model4620 Kit-300ft
Cat. #2135.20
DescriptionGround Resistance Tester Model 4620 Kit-300ft
List Price$2,039.00
Consult Factory for Availability
Model4620 Kit-500ft
Cat. #2135.21
DescriptionGround Resistance Tester Model 4620 Kit-500ft
List Price$2,179.00
Consult Factory for Availability

Model 4620 - Cat. #2130.43: (Ground Resistance Tester Model 4620 only). Includes a soft carrying case, (8) C-cell battery and a user manual.

Model 4620 Kit (150 ft) - Cat. #2135.19: (Ground Resistance Tester Model 4620 and Test Kit For 3-Point Testing cat. 2135.35.) Includes carrying bag, (2) 150 ft color-coded leads on spools (red/blue), (1) 30 ft lead (green), (2) 5 ft color-coded leads (red/blue), (2) 14.5" T-shaped auxiliary ground electrodes, (1) set of 5 spaded lugs, and (1) 100 ft AEMC® tape measure and and a user manual.

Model 4620 Kit (300 ft) - Cat. #2135.20: (Ground Resistance Tester Model 4620 and Test Kit for 4-Point Testing cat. #2135.36.) Includes carrying bag, (2) 300 ft color-coded leads on spools (red/blue), (2) 100 ft color-coded leads (hand tied) (green/black), (2) 5 ft color-coded leads (red/blue), (4) 14.5" T-shaped auxiliary ground electrodes, (1) set of 5 spaded lugs, and (1) 100 ft AEMC® tape measure and and a user manual.

Model 4620 Kit (500 ft) - Cat. #2135.21: (Ground Resistance Tester Model 4620 and Test Kit for 4-Point Testing cat. #2135.36.) Includes carrying bag, (2) 500 ft color-coded leads on spools (red/blue), (2) 100 ft color-coded leads (hand-tied) (green/black), (2) 5 ft color-coded leads (red/blue), (1) 30 ft lead (green), (4) 14.5" T-shaped auxiliary ground electrodes, (1) set of five spaded lugs, (1) 100 ft tape measure, and and a user manual.

Print
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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