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Megohmmeter Models 5000N/5100/5110
Figures 13 and 14 show the connection for testing insulation from a
supply conductor to a ground (motor frame). The connection to the guard
terminal is used to eliminate the effects of surface leakage across
exposed insulation at one end of the cable. Refer to the section on
Utilizing the Guard Terminal (pg 24). The cable should be disconnected
at both ends to avoid leakage through switchboards and panels.
Conductor under test
GUARD
- LINE
+ EARTH
MEGOHMMETER
Conductor under test
GUARD
- LINE
MEGOHMMETER
Figure 13
+ EARTH
Figure 14
- 28 -
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