Extech Instruments GRT300, User Manual

Page: 3 / 9

GRT300-EU-EN v1.1 08/13 3
Features

Microprocessor controlled with advanced safety features

Two line LCD display

Auto-Ranging

Earth resistance testing with four ranges: 0-2 Ω /0-20 Ω /0-200 Ω /0-2k Ω

Earth voltage measuring range of 0-300Vac

Automatic C spike check.

Automatic P spike check.

2-wire test

3-wire test

4-wire test

Auto power off

Data hold

Safety standard: EN 61010-1 CATIV 300V, EN 61326-1
Meter Description
1. C1 terminal
(Black test lead connection)
2. P1 terminal
(Green test lead connection)
3. P2 terminal
(Yellow test lead connection)
4. C2 terminal
(Red test lead connection)
5 Display
6. Rc
LED
7. Rp LED
8. 2 Wire button
9. 3 Wire button
10. 4 Wire button
11. ACV
button
12. Power button
13. TEST/STOP button
1
2
3
4
5
6
7
8 9 10 11 12 13