| R E V I S I O N E D I S C U S S I O N E |
| whgdmk12345 |
Postato il 12/29/2022 : 03:05:01
https://www.mktester.com/ground-resistance-tester/digital-ground-resistance-tester.htmlOverview#65306;
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 ~ 2#937;0 ~ 20#937;0 ~ 200#937;.
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#65306;
Working Conditions Ambient temperature 0#8451;#65374;+45#8451;
Relative humidity #8804;85%RH
Measurement range and constant
current value (effective value)
Resistance 0#65374;20#937;(10mA)#65292;2#65374;200#937;(1mA)#65292;20#65374;2000#937;(0.1mA)
Voltage AC0#65374;19.99V
Measurement accuracy and resolution Precision rowspan 0#65374;0.2#937;#8804;±3%±1d
0.2#937;#65374;1999.9#937;#8804;±1.5%±1d
1#65374;19.99V#8804;±3%±1d
Resolution 0.01#937;#12289;0.1#937;#12289;1#937;#12289;0.01V
Measurement error caused by auxiliary
grounding resistance and ground voltage
Allow auxiliary grounding resistance RC(between C1 and C2)
0#65374;20#937;#8804;1k#937;
20#65374;2000#937;#8804;2k#937;
RP(between P1 and P2) < 40k#937;#65292; Error#8804;±5% |
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