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Ground Resistance Tester Model 3640

The Digital Ground Resistance Tester Model 3640 performs ground resistance measurement. This direct reading tester is auto-ranging, so it automatically seeks out the optimum measurement range. The Model 3640 is easy to use - simply connect the leads, press to measure, and read. The large LCD (nearly 3/4" high) also indicates low battery status, overrange, and lead reversals.

The Model 3640 comes with 3 color coded terminals to aid in easy hookup. Three LED indicators on the front panel continuously warn the user of measurement problems to ensure accurate and reliable tests.

The Model 3640 is fuse protected up to 250VAC.

The Ground Resistance Tester Model 3640 is also available in complete Kits (150ft and 300ft).

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
3640 2114.92 Ground Resistance Tester Model 3640 $810.00 Out of Stock Consult Factory for Availability
3640 Kit-150ft 2135.13 Ground Resistance Tester Model 3640 Kit-150ft $1,230.00 Out of Stock Consult Factory for Availability
3640 Kit-300ft 2135.14 Ground Resistance Tester Model 3640 Kit-300ft $1,330.00 Out of Stock Consult Factory for Availability
Model3640
Cat. #2114.92
DescriptionGround Resistance Tester Model 3640
List Price$810.00
Out of Stock Consult Factory for Availability
Model3640 Kit-150ft
Cat. #2135.13
DescriptionGround Resistance Tester Model 3640 Kit-150ft
List Price$1,230.00
Out of Stock Consult Factory for Availability
Model3640 Kit-300ft
Cat. #2135.14
DescriptionGround Resistance Tester Model 3640 Kit-300ft
List Price$1,330.00
Out of Stock Consult Factory for Availability

Model 3640 - Cat. 2114.92: Ground Resistance Tester Model 3640 only

Model 3640 Kit 150ft - Cat. 2135.13: Ground Resistance Tester Model 3640 and Test Kit For 3-Point Testing cat. 2135.35 (carrying bag, 2 14.5" T-shaped Auxiliary Ground Electrodes, set of 5 spaded lugs, and 100ft AEMC® tape measure)

Model 3640 Kit 300ft - Cat. 2135.14: Ground Resistance Tester Model 3640 and Test Kit for 4-Point Testing cat. 2135.36 (carrying bag, red 300ft color-coded lead on spool, blue 300ft color-coded lead on spool, 4 14.5" T-shaped Auxiliary Ground Electrodes, set of 5 spaded lugs, and 100ft AEMC® tape measure)

Print
Range (Auto-ranging) 0 to 2000Ω
Resolution 0.01 to 1Ω
Test Current 0.1 to 10mA
Accuracy  Typical ±(2% R +1ct)
Open Voltage 42V peak
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 6 seconds for a stabilized measurement
Display 200 counts, 7 segment LCD
Power Source 8 x 1.5V AA alkaline batteries
Battery Life 1800 15-seconds tests
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%
Dimensions 8.7 x 5.4 x 5.9” (220 x 136 x 150mm)
Weight (with Battery) 2.9 lbs (1.3kg)
Case UL 94 material
Ingress Protection (IP) IP 50
EMC EN 61326-1
Safety Compliance EN 61010-1, 42V CAT III, Pollution Degree 2
Model Cat. # Description List Price Quantity/Status Distributor Stock Check
2117.76 Bag - Small Flat Black Canvas Bag for Ground/Accessories
Dimensions: 17 x 6.5 x 2.75"
$39.00
2119.82 Multi-purpose Large Canvas Bag
Dimensions: 22 x 10.5 x 12"
$121.00
2126.71 Case - Replacement Carrying Case for Models 3620, 3640, 4600, 4610, AN1, 6501 & 6503 $28.00 Out of Stock Consult Factory for Availability
2130.59 25Ω Calibration Checker for Ground Testers Model 3620, 3640, 4610, 4620 and 4630. $72.00
2130.60 100 ft Tape Measure for use with Ground Resistance Tester Kits $36.00
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) $490.00
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) $590.00
2135.37 Ground Resistance Test Kit for 4-Point Testing - 500ft Test Kit for 4-Point Testing, Kit (Carrying Bag, [2] 500 ft Color-coded Leads on Spools (Red/Blue), [2] 100 ft Color-coded Leads (hand tied-Green/Black), [1] 30 ft Lead (Green), [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) $740.00
2135.38 Test Kit for 3-Point testing (supplemental for 4-Point testing) - includes two 100 ft color-coded leads (hand tied - green and black), one 30 ft lead (green) and two 14.5" T-shaped auxiliary ground electrodes and carrying bag. $255.00
2135.39 Set of 2, 14.5" T-shaped Ground Rods for use with all Ground Testers (except clamp-ons) $33.00
2135.44 Ground Rods – Set of 2, 17" Stainless Steel T-shaped Auxiliary Ground Electrodes $149.00
2135.85 Set of 2 reel caddies for use with ground kit spools $85.00
2970.12 Fuse - Set of 5, 0.1A, 250V (fast blow), 6 x 32mm (0.25 x 1.25") for Models 3620, 3640, 4500, 4600, 4610 $11.95
5000.01 Green replacement wire (30 ft, hand-tied) for ground resistance tester kits. $29.95
5000.02 Red replacement wire (500 ft) on reel for ground resistance tester kits (Models 4620, 4630, 6470-B, 6471 & 6472) $199.00 Out of Stock Consult Factory for Availability
5000.03 Red replacement wire (300 ft) on reel for ground resistance tester kits (Models 4620, 4630, 6470-B, 6471 & 6472) $169.00
5000.04 Red replacement wire (150 ft) on reel for ground resistance tester kits (Models 6470-B, 6471 and 6472 series) $139.00
5000.05 Blue replacement wire (500 ft) on reel for ground resistance tester kits (Models 4620, 4630, 6470-B, 6471 & 6472) $199.00
5000.06 Blue replacement wire (300 ft) on reel for ground resistance tester kits (Models 4620, 4630, 6470-B, 6471 & 6472) $169.00
5000.07 Blue replacement wire (150 ft) on reel for ground resistance tester kits (Models 4620, 4630, 6470-B, 6471 & 6472) $139.00
5000.10 Set of 5, replacement screw-on spaded lugs for ground resistance tester kits. $11.95
5000.34 Lead - Set of 2, Color-coded (Red/Blue) Leads for use with AEMC Ground Tester Reels Incorporating Banana Jack Input $20.50
5000.74 Ground Resistance Tester Checker
Calibration Checker - 5/25Ω for use with Models 6470/6470-B, 6471, and 6472
Instruction Sheet
$149.00
Model
Cat. #2117.76
DescriptionBag - Small Flat Black Canvas Bag for Ground/Accessories
Dimensions: 17 x 6.5 x 2.75"
List Price$39.00
Model
Cat. #2119.82
DescriptionMulti-purpose Large Canvas Bag
Dimensions: 22 x 10.5 x 12"
List Price$121.00
Model
Cat. #2126.71
DescriptionCase - Replacement Carrying Case for Models 3620, 3640, 4600, 4610, AN1, 6501 & 6503
List Price$28.00
Out of Stock Consult Factory for Availability
Model
Cat. #2130.59
Description25Ω Calibration Checker for Ground Testers Model 3620, 3640, 4610, 4620 and 4630.
List Price$72.00
Model
Cat. #2130.60
Description100 ft Tape Measure for use with Ground Resistance Tester Kits
List Price$36.00
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$490.00
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$590.00
Model
Cat. #2135.37
DescriptionGround Resistance Test Kit for 4-Point Testing - 500ft Test Kit for 4-Point Testing, Kit (Carrying Bag, [2] 500 ft Color-coded Leads on Spools (Red/Blue), [2] 100 ft Color-coded Leads (hand tied-Green/Black), [1] 30 ft Lead (Green), [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$740.00
Model
Cat. #2135.38
DescriptionTest Kit for 3-Point testing (supplemental for 4-Point testing) - includes two 100 ft color-coded leads (hand tied - green and black), one 30 ft lead (green) and two 14.5" T-shaped auxiliary ground electrodes and carrying bag.
List Price$255.00
Model
Cat. #2135.39
DescriptionSet of 2, 14.5" T-shaped Ground Rods for use with all Ground Testers (except clamp-ons)
List Price$33.00
Model
Cat. #2135.44
DescriptionGround Rods – Set of 2, 17" Stainless Steel T-shaped Auxiliary Ground Electrodes
List Price$149.00
Model
Cat. #2135.85
DescriptionSet of 2 reel caddies for use with ground kit spools
List Price$85.00
Model
Cat. #2970.12
DescriptionFuse - Set of 5, 0.1A, 250V (fast blow), 6 x 32mm (0.25 x 1.25") for Models 3620, 3640, 4500, 4600, 4610
List Price$11.95
Model
Cat. #5000.01
DescriptionGreen replacement wire (30 ft, hand-tied) for ground resistance tester kits.
List Price$29.95
Model
Cat. #5000.02
DescriptionRed replacement wire (500 ft) on reel for ground resistance tester kits (Models 4620, 4630, 6470-B, 6471 & 6472)
List Price$199.00
Out of Stock Consult Factory for Availability
Model
Cat. #5000.03
DescriptionRed replacement wire (300 ft) on reel for ground resistance tester kits (Models 4620, 4630, 6470-B, 6471 & 6472)
List Price$169.00
Model
Cat. #5000.04
DescriptionRed replacement wire (150 ft) on reel for ground resistance tester kits (Models 6470-B, 6471 and 6472 series)
List Price$139.00
Model
Cat. #5000.05
DescriptionBlue replacement wire (500 ft) on reel for ground resistance tester kits (Models 4620, 4630, 6470-B, 6471 & 6472)
List Price$199.00
Model
Cat. #5000.06
DescriptionBlue replacement wire (300 ft) on reel for ground resistance tester kits (Models 4620, 4630, 6470-B, 6471 & 6472)
List Price$169.00
Model
Cat. #5000.07
DescriptionBlue replacement wire (150 ft) on reel for ground resistance tester kits (Models 4620, 4630, 6470-B, 6471 & 6472)
List Price$139.00
Model
Cat. #5000.10
DescriptionSet of 5, replacement screw-on spaded lugs for ground resistance tester kits.
List Price$11.95
Model
Cat. #5000.34
DescriptionLead - Set of 2, Color-coded (Red/Blue) Leads for use with AEMC Ground Tester Reels Incorporating Banana Jack Input
List Price$20.50
Model
Cat. #5000.74
DescriptionGround Resistance Tester Checker
Calibration Checker - 5/25Ω for use with Models 6470/6470-B, 6471, and 6472
Instruction Sheet
List Price$149.00

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