Fluke 1630-2 User Manual page 18

1630-2/1630-2 FC
Users Manual
If >3 A is found in the ground rod, NOISE shows on the
•
display and the Clamp beeps. When noise is present,
the Clamp reading is not valid.
• If the jaw assembly is opened during measurement,
 shows on the display.
14
Note
Ground resistance measurement principle:
Ground resistance measurements principle:
R R
g 1
Equivalent circuit diagram:
Equivalent circuit diagram:
R
1
R
g
Figure 8. Ground Resistance Measurement Principles
.....R
n
R R
2 3
R .....R
2 n
R
g