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This instrument is controlled by intelligent microcontrollerchip, with high accuracy and high reliability; it can be used to measuregrounding resistance of various power facilities wiring, electrical equipment,lightning protection equipment and other grounding devices, and it can alsomeasure ground voltage. (Note: This instrument is not suitable for harshoutdoor environmental conditions, such as raining, lightning, etc.)
Features
Digital Earth Resistance Testerpossesses the following features:
1.backlight and battery detection function.2.data holding.3.It can be used for precise three-wire measurement or simpletwo-wire measurement.4.When measuring ground resistance, if C or E end of test lead isnot in good contact,"---- Ω" warning appears on LCD.5."OL" stands for over range.6.Double insulation or reinforced insulation safety structure.
Specifications
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 60529 (IP40)
1.3 measurement method:
1.7 Overload protection: