HVTest ETCR2000, Руководство пользователя

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In the above three steps, the reading measured in each step is the value
of the two series grounding resistance. In this way, we can easily calculate the
value of each grounding resistance:
From:
We get:
This is the grounding resistance value of the grounding body RA.To
facilitate the memory of the above formula, these three grounding bodies scan
be viewed as a triangle; then the measured resistance is equivalent to the
value of the resistance values of the adjacent edges plus or minus resistance
value of the opposite sides, and divided by 2.
As the reference points, the grounding resistance values of the other two
grounding bodies are:
R
A
R R
B
 
1
R
A
R R
C
 
3
 
R
B
R
A
R
1
R
C
R
B
R
 
2
R
A
R
C
R
 
3
2
2
3
1
R
R
R
R
A
 
