Digital Earth Resistance Tester possesses the following features:
1.backlight and battery detection function.
2.data holding.
3.It can be used for precise three-wire measurement or simple
two-wire measurement.
4.When measuring ground resistance, if C or E end of test lead is
not in good contact, "---- Ω" warning appears on LCD.
5."OL" stands for over range.
6.Double insulation or reinforced insulation safety structure.
Specifications of Digital Earth Resistance Tester:
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
