Mastech MS2301 Guide Rapide page 2

Ω
1 2
3
I
guard wire
E
Rx R1 R2
Rearth
4
1000
Ω
A
1
Ω
3
I
guard wire
Rx
Rn
4
2
A
E
R1 R2 Rn
Rearth
3.76
mA