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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 700V AC/DC and AC current up to 70A 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).


Ground Tester | Ground Rod Tester | Earth Ground Tester | Ground Continuity Tester | Ground Wire Tester

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 In stock at factory. Find a Distributor
6424 Kit-150ft 2135.58 Ground Resistance Tester Model 6424 Kit-150 ft (Digital, 3-Point) $1,325.00 Out of Stock Consult Factory for Availability
6424 Kit-300ft 2135.59 Ground Resistance Tester Model 6424 Kit-300 ft (Digital, 3-Point) $1,425.00 Out of Stock Consult Factory for Availability
Model6424
Cat. #2135.57
DescriptionGround Resistance Tester Model 6424 (Digital, 3-Point)
List Price$845.00
In stock at factory. Find a Distributor
Model6424 Kit-150ft
Cat. #2135.58
DescriptionGround Resistance Tester Model 6424 Kit-150 ft (Digital, 3-Point)
List Price$1,325.00
Out of Stock 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
Out of Stock Consult Factory for Availability

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 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 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
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) $520.00 Out of Stock Consult Factory for Availability
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) $635.00 Out of Stock Consult Factory for Availability
MN72 2153.06 AC Current Probe Model MN72 $274.00 Out of Stock Consult Factory for Availability
5000.04 Red replacement wire (150 ft) on reel for ground resistance tester kits (models 3620, 3640, 4620, 4630, 6422 & 6424) $143.00 Out of Stock Consult Factory for Availability
5000.07 Blue replacement wire (150 ft) on reel for ground resistance tester kits (models 3620, 3640, 4620, 4630, 6422 & 6424) $143.00
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$520.00
Out of Stock Consult Factory for Availability
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$635.00
Out of Stock Consult Factory for Availability
Model MN72
Cat. #2153.06
DescriptionAC Current Probe Model MN72
List Price$274.00
Out of Stock Consult Factory for Availability
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
Out of Stock Consult Factory for Availability
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
Model
Cat. #5000.92
Description5000.92 - Calibration Checker for Ground Tester Models 6422 & 6424
List Price$65.00

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