Product Description
Extech GRT300 4-Wire Earth Ground Resistance Tester
The Extech GRT300 is a 4-wire earth ground resistance tester for checking grounding systems at buildings, cell sites and electrical installations using the fall-of-potential method.
Key Features
- 2-, 3- and 4-wire earth resistance testing
- Ranges from 2Ω to 2000Ω
- Measures earth voltage up to 300VAC
- CAT IV 300V rated
Specifications
| Model | GRT300 |
|---|---|
| Earth Ground Resistance | 2Ω/20Ω/200Ω/2000Ω |
| Earth Ground Resistance Basic Accuracy | ±(2% of reading + 3 digits) |
| Earth Voltage | 0 to 300VAC (40 to 500Hz) |
| Test Current | <2mA |
| Test Frequency | 820Hz |
| Dimensions | 9.8 × 7.8 × 4.3" (250 × 190 × 110mm) |
| Power | 8 × AA (1.5V) batteries |
| Safety Category | CAT IV 300V |
| Warranty | 2 years |
| Weight | 3.15lbs (1430g) |
