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Digital Ground Resistance Tester


Posted Aug 16, 2022 | Hits: 53
Country: China
https://www.mktester.com/ground-resistance-tester/digital-ground-resistance-tester.htmlOverview:

Digital Ground Resistance Tester Rejects the traditional manual manual power generation method adopts advanced media and large scale integrated circuits, and uses DC / AC conversion techniques to combine the triple buttons and four-end button measurement modes with new ground resistors. .



The working principle is that the DC / AC converter in the machine changes the DC constant current, and the circuit is formed by the auxiliary ground electrode C and the measurement object E, which generates an AC voltage drop on the measuring object, and feeds the AC amplifier through assist grounding. The electrode P amplified, and then multiplied by multiplying by multiplying by a power switch to display the instrument header head, you can get three different number limits: 0 ~ 2Ω0 ~ 20Ω0 ~ 200Ω.



Nearly the resistance tester is suitable for measuring the electrical resistance of low resistance of various departments such as various devices and power postal railway communication mining; Nearly the ground resistance tester also measures soil resistivity and ground voltage.



Technical parameters:
Working Conditions Ambient temperature 0℃~+45℃
Relative humidity ≤85%RH
Measurement range and constant

current value (effective value)

Resistance 0~20Ω(10mA),2~200Ω(1mA),20~2000Ω(0.1mA)
Voltage AC0~19.99V
Measurement accuracy and resolution Precision rowspan 0~0.2Ω≤±3%±1d
0.2Ω~1999.9Ω≤±1.5%±1d
1~19.99V≤±3%±1d
Resolution 0.01Ω、0.1Ω、1Ω、0.01V
Measurement error caused by auxiliary

grounding resistance and ground voltage

Allow auxiliary grounding resistance RC(between C1 and C2)
0~20Ω≤1kΩ
20~2000Ω≤2kΩ
RP(between P1 and P2) < 40kΩ, Error≤±5%
Allowable ground voltage (effective

value of power frequency)

≤5V, Error≤±5%
Power and power consumption Maximum power loss ≤2W
DC 8 × 1.5V (AA R6) battery
AC 220V/50Hz
volume and weight Dimensions 220×200×105mm3
Weight ≤1.4kg
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