Megohmmeter Models 5000N/5100/5110
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Figure 15 shows the
connections to a transformer.
Make sure that the switches
and/or circuit breakers on
both sides are open. Check
the high voltage winding to
ground, low voltage to
ground, and the resistance
between them with no
winding grounded.
Figure 15
Figure 16 shows the connec-
tions for measuring the
insulation of a three-phase line
to ground by connecting the
jumpers between phases. This
gives a reading of all con-
ductors 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.
Figure 16
+ EARTH
- LINE
MEGOHMMETER
GUARD
Winding under test
Transformer
grounding lug
+ EARTH
- LINE
MEGOHMMETER
GUARD
Jumper
Jumper
A
B
C
Summary of Contents for 5000N
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