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2-, 3- and 4-Point Ground Resistance Tester Kit



  • Measures ground resistance (2- and 3-Point) Fall-of-Potential method and soil resistivity (4-Point)
  • Fuse protection of 0.1A, >250V, 0.25 x 1.25" with 30kA Interrupt Capacity
  • Both models will perform over 2,000 measurements of the 15-second tests between recharging or battery replacement
  • Provides a response time of approximately four to eight seconds for a stabilized measurement
  • Step voltage tests and touch potential measurements
  • Auto-ranging: automatically selects the optimum resistance range and test current
  • Designed to reject high levels of noise and interference
  • Extremely simple to operate: connect – press – hold – read
  • May also be used for continuity tests on bonding
  • Large easy-to-read backlit display
  • LED on faceplate informs operator of high input noise, high auxiliary rod resistance and fault connections
  • Rugged dustproof and rainproof field case
  • Color-coded terminals
  • Low battery indication


Part Number EST4630
Soil Resistivity Test Yes
Measurement Range 0 – 2,000 Ω
Resolution 10 mΩ – 1 Ω
Open Voltage 42 V Max
Test Current 10.0 – 0.1 mA
Operating Frequency 128 Hz square wave
Accuracy 2% of Reading +/- 1ct
5% of Reading +/- 3ct
Auxillary Electrode Influence 3 – 50 kΩ
Withstanding Voltage 250 VAC
100 VDC
Power Source AC-powered with rechargeable NiMH battery pack
Unit Weight 35 lb
Certifications CE
Standard Packaging Quantity 1 pc
UPC 78285663899
EAN-13 8711893056808
Kit includes: Two 300’ (91.4 m) color-coded leads on spools (red and blue), two 5' (1.5 m) color-coded leads (red and blue), two 100’ (30.5 m) color-coded leads (green and black), four 14.5” (368 mm) T-shaped auxiliary ground electrodes, one set of five-spaded lugs, one 100’ (30.5 m) tape measure, and one carrying bag.

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