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Megohmmeter Model 1000N/1100N
Figure 11 shows the connections for measuring the insulation of a three-
phase line to ground by connecting the jumpers between phases. This
gives a reading of all conductors at once. If a load such as a motor,
heater, etc., is attached to the other end of the line, it will read the load
resistance to ground at the same time. By removing the jumpers,
readings can be made between the individual conductors and ground.
GUARD
- LINE
+ EARTH
MEGOHMMETER
Figure 11
- 18 -
A
Jumper
B
Jumper
C
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