Extech Instruments 382357 Clamp-on Ground Resistance Tester


The Extech 382357 is an Autoranging Non-Contact Clamp-On Ground Resistance Tester which will take measurements of ground conductors without the need for auxiliary ground spikes. The 382357 will take True-RMS AC leakage measurements from 0.2 mA up to 30.0A and can accomodate larger ground rods with the 0.9" (23 mm) jaw size. The 382357 features a 9999 count LCD display with Data Hold and includes a programmable Hi/Low alarm as well as programmable datalogging for up to 116 data points.


  • 0.9" (23mm) Jaw size for large ground rods
  • 9999 Count LCD Display with Data Hold
  • Autoranging ground resistance measurements from 0.025Ohm to 1500Ohm with 0.002Ohm resolution
  • True RMS AC Leakage current range of 0.2mA to 30A with 1.000mA resolution
  • Programmable Datalogging with 116 data points
  • Programmable Hi/Lo Alarm
  • Auto Power Off
  • Automatic Self Calibration when powered on
  • Verification resistors confirm accuracy of meter
  • Electrical Noise Detection feature prevents inaccurate readings
More Information
Display Digital
Features Clamp-on
Manufacturer Extech Instruments
Measurement 1500 Ohms
Rating CAT II-600V, CAT III-300V
Type Ground Resistance Testers
UPC 793950383575
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