1.1 Measurement range and measurement error
(under condition of 20℃±5℃and≤75%RH)
| Basic Function | Range | Accuracy | Resolution |
| Ground resistance |
20Ω | ±(2%+10) | 0.01Ω |
| 200Ω | ±(2%+3) | 0.1Ω | |
| 2000Ω | ±(2%+3) | 1Ω | |
| 2000Ω（two wires） | ±(2%+5) | 1Ω | |
| Ground voltage | 200V | ±(2%+5) | 0.1V |
1.2 Application standard:
IEC 61010-1 CAT.Ⅲ 600V Pollution degree 2
CAT.Ⅰ 5000V Pollution degree 2
IEC 61326-1 (EMC standard)
IEC 60529 (IP40)
1.3 measurement method:
(1) Ground voltage measurement: average response(2) Ground resistance measurement: test signal frequency:
about 820Hz, current: 20Ω about 3.2mA
1.4 Working environment: temperature: 5℃~ 40℃; relative
humidity:≤80 ~ RH (no fog) Altitude≤2000 meters
1.5 Storage conditions: temperature: -20 ~ 60 ℃; relative
humidity:≤70% RH (no fog)
1.6 Power supply: 9V power supply [1.5V (No. 5 alkaline
battery) * 6]
1.7 Overload protection:
Ground resistance: 200V AC (10 seconds)Ground voltage: 400V AC (30 seconds)
1.8 Insulation resistance: The insulation resistance between
measurement circuit and case is not less than 20MΩ
1.9 Dimensions: 176mm * 77mm * 110mm
