Product Description
Extech GRT300 4-Wire Earth Ground Resistance Tester
Measures earth ground resistance in 4 ranges from 2 to 2000 Ohm.
Extech 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.
Features Extech GRT300 4-Wire Earth Ground Resistance Tester
- 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 Extech GRT300 4-Wire Earth Ground Resistance Tester
| 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) |
Extech GRT300 4 – Datasheet
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