5. Guard Connection
5-4
The test lead may not be interrupted during testing, otherwise
the test lead could carry high voltage!
Insulation test between the conductors. The insulation currents
between the conductors and the shield will be ignored.
☞
Insulation test between conductor and shield. All of the insulation
currents will be measured.
Conductors of test object not
connected to earth
Conductors of test
object and shield
connected to earth
Station earth
Guard
Guard
Station earth
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