VIII. Measuring Principle
The basic principle of the ground resistance measurement of the
clamp-type grounding resistance meter is to measure the
loop resistance. See below. The jaw section of the clamp
meter consists of a voltage coil and a current coil. The
voltage coil provides the excitation signal and induces a
potential V on the circuit under test. Under the action of the
potential V, a current I will be generated in the circuit under
test. The clamp meter measures V and I and uses the
following formula to obtain the measured resistance R.
R=V/I
IX. Operation Method
1.Boot up
Boot , DO NOT press the trigger, don’t open jaws, nor
clamp any wire
Boot complete, show “OL Ω”, then press the trigger,
open jaws, clamp the measured wire
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