Ground Resistance Tester Model 6424 (Digital, 3-Point)

The Digital Ground Resistance Tester Model 6424 performs 2-pole and 3-pole ground resistance measurement. This direct reading tester is auto-ranging, so it automatically seeks out the optimum measurement range. The Model 6424 is easy to use - simply connect the leads, press to measure, and read. The large LCD also indicates low battery status, overrange, and lead reversals.

The Model 6424 comes with 3 safety color coded terminals to aid in easy hookup, measure voltage up to 600V AC/DC and AC current up to 60A with the optional current probe Model MN72.

The Model 6424 is powered by 6 x AA rechargeable NIMH batteries. The Ground Resistance Tester Model 6424 is also available in complete Kits (150ft and 300ft).


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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
6424 2135.57 Ground Resistance Tester Model 6424 (Digital, 3-Point) $845.00 Consult Factory for Availability
6424 Kit-150ft 2135.58 Ground Resistance Tester Model 6424 Kit-150 ft (Digital, 3-Point) $1,325.00 Consult Factory for Availability
6424 Kit-300ft 2135.59 Ground Resistance Tester Model 6424 Kit-300 ft (Digital, 3-Point) $1,425.00 Consult Factory for Availability
Model6424
Cat. #2135.57
DescriptionGround Resistance Tester Model 6424 (Digital, 3-Point)
List Price$845.00
Consult Factory for Availability
Model6424 Kit-150ft
Cat. #2135.58
DescriptionGround Resistance Tester Model 6424 Kit-150 ft (Digital, 3-Point)
List Price$1,325.00
Consult Factory for Availability
Model6424 Kit-300ft
Cat. #2135.59
DescriptionGround Resistance Tester Model 6424 Kit-300 ft (Digital, 3-Point)
List Price$1,425.00
Consult Factory for Availability

Model 6424 - Cat. #2135.57: Includes carrying bag, (6) AA rechargeable NiMH batteries, USB to wall charger, 5V, 2A, USB charger cable and a user manual.

Model 6424 Kit (150 ft) - Cat. #2135.58: (Ground Resistance Tester Model 6424 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 a user manual.

Model 6424 Kit (300 ft) - Cat. #2135.59: (Ground Resistance Tester Model 6424 and Test Kit for 3-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 a user manual.

Print
ELECTRICAL
Voltage
Range 0.1-600VAC/DC
Resolution 0.1V
Accuracy ±(1%R + 1ct)
Current
Range 0.5-60.00AAC (requires optional MN72 probe)
Ground Resistance (2P Mode)
Measurement Range 0.05-99.99Ω 80.0-999.9Ω 0.800-9.999kΩ 8.00-50.00kΩ
Resolution 0.01Ω 0.1Ω
Intrinsic Uncertainty ± (2%R + 10 ct) ± (2%R + 2 ct) ±(2%R + 1 ct) ±(2%R + 1 ct)
Ground Resistance (3P Mode)
Measurement Range 0.50-99.99Ω 80.00-999.99Ω 0.800-9.999kΩ 8.00-50.000kΩ
Resolution 0.01Ω 0.1Ω 10Ω
Intrinsic Uncertainty ± (1%R + 10ct) ± (1%R + 2ct) ± (1%R + 1ct)
Measurement Frequency 128Hz or 256Hz (automatically selected)
No-load Voltage ±10 V peak
Maximum Test Current 20mA
Measurement Mode One shot or continuous
Data Storage Stores the 52%, 62% and 72% 3P resistance measurements
Calculation Calculates average and % deviation of the three saved readings
GENERAL
Display Backlit LCD
Measurement Mode V, I, 2P (Ω), 3P (Ω)
Power Supply (6) NiMH rechargeable batteries,charging time approx. 6 hrs
Battery Life >1,500 x 3P earth measurements at 100 Ω
Dimensions 8.78 x 4.96 x 2.75" (223 x 126 x 70mm)
SAFETY
Safety Ratings EMC: IEC 61326-1; IEC 61010-2-030 / 600 V CAT IV

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Workbooks

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Choosing the Right Ground Resistance Tester

Understanding Ground Resistance Testing

Model Cat. # Description List Price Quantity/Status Distributor 
Stock Check
2135.35 Ground Resistance Test Kit for 3-Point Testing - 150ft Test Kit for 3-Point Testing, Kit (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) $525.00
2135.36 Ground Resistance Test Kit for 4-Point Testing - 300ft Test Kit for 4-Point Testing, Kit (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) $640.00
2135.44 Ground Rods – Set of 2, 17" Stainless Steel T-shaped Auxiliary Ground Electrodes $155.00
MN72 2153.06 AC Current Probe Model MN72 $274.00
5000.04 Red replacement wire (150 ft) on reel for ground resistance tester kits (models 3620, 3640, 4620, 4630, 6422 & 6424) $143.00
5000.07 Blue replacement wire (150 ft) on reel for ground resistance tester kits (models 3620, 3640, 4620, 4630, 6422 & 6424) $143.00 Consult Factory for Availability
5000.18 Empty replacement reel for ground kits (holds up to 500ft of wire) Outer Ø: 7.5" - Inner Ø: 3.75" - Width: 4.56" $19.95
5000.92 5000.92 - Calibration Checker for Ground Tester Models 6422 & 6424 $65.00
Model
Cat. #2135.35
DescriptionGround Resistance Test Kit for 3-Point Testing - 150ft Test Kit for 3-Point Testing, Kit (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)
List Price$525.00
Model
Cat. #2135.36
DescriptionGround Resistance Test Kit for 4-Point Testing - 300ft Test Kit for 4-Point Testing, Kit (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)
List Price$640.00
Model
Cat. #2135.44
DescriptionGround Rods – Set of 2, 17" Stainless Steel T-shaped Auxiliary Ground Electrodes
List Price$155.00
Model MN72
Cat. #2153.06
DescriptionAC Current Probe Model MN72
List Price$274.00
Model
Cat. #5000.04
DescriptionRed replacement wire (150 ft) on reel for ground resistance tester kits (models 3620, 3640, 4620, 4630, 6422 & 6424)
List Price$143.00
Model
Cat. #5000.07
DescriptionBlue replacement wire (150 ft) on reel for ground resistance tester kits (models 3620, 3640, 4620, 4630, 6422 & 6424)
List Price$143.00
Consult Factory for Availability
Model
Cat. #5000.18
DescriptionEmpty replacement reel for ground kits (holds up to 500ft of wire) Outer Ø: 7.5" - Inner Ø: 3.75" - Width: 4.56"
List Price$19.95
Model
Cat. #5000.92
Description5000.92 - Calibration Checker for Ground Tester Models 6422 & 6424
List Price$65.00

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