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Extech GRT300

Extech Instruments

4-Wire Earth Ground Resistance Tester

Measures earth ground resistance in 4 ranges from 2 to 2000 Ohm


For order quantity more than 50, please feel free to request wholesale quotation

  • Description
  • Key features
  • Specification
  • Technical data

Description

The GRT300 measures earth ground in 4 ranges from 2 to 2000 Ohm. 4-wire, 3-wire, and 2-wire testing. Large dual line LCD. Automatic I (current) and P (potential) spike check. Test Hold function for easy operation. Autoranging, Automatic Zero adjustment, Data Hold and Auto Power off. AC Earth Voltage. Overrange and low battery indication. Complete with test leads with alligator clips, 4 auxiliary earth bars, hard carrying case, and eight 1.5V AA batteries.

Key features

  • 4-wire, 3-wire, and 2-wire testing
  • Large dual line LCD
  • Automatic I (current) and P (potential) spike check
  • Test Hold function for easy operation
  • Autoranging, Automatic Zero adjustment, Data Hold and Auto Power off
  • AC Earth Voltage
  • Overrange and low battery indication
  • Complete with test leads with alligator clips, 4 auxiliary earth bars, hard carrying case, and eight 1.5V AA batteries

Specification

Specifications Range
Earth Ground Resistance ranges 2Ω/20Ω/ 200Ω/2000Ω
Basic Accuracy ±(2%rdg+3d)
Resolution 0.01Ω/ 0.1Ω/1Ω/0.01kΩ
Test Current / Frequency <2mA / 820Hz
AC Earth Voltage / Frequency 0 to 300VAC / 40 to 500Hz
Accuracy ±(2%rdg+3d)
Power supply Eight 1.5V 'AA' Batteries
Dimensions 9.8 x 7.8 x 4.3" (250 x 190 x 110mm)
Weight 3.15lbs (1430g) (batteries included)

Technical data

Technical data

Datasheet [Click Here To Download

User's Manual [Click Here To Download