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Figure 4-7 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 conduc-
tors and ground.
20
Shop for AEMC products online at:
Jumpers
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Figure 4-7
Megohmmeter Models 6501/6503
ShopAEMC
www.
.com
1.888.610.7664
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