extech

Extech GRT300: 4-Wire Earth Ground Resistance Tester

Description

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

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
Specifications
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)

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