NEPTUNE
EN - 40
EXAMPLE OF HOW TO MEASURE THE INSULATION OF A SYSTEM
Fig. 45: Example of an electric system
Switches D and E are the switches installed near the load which have the function of
separating the load from the system. Should these switches not be provided, or should
they be single-pole switches, it is necessary to disconnect the users from the system
before performing the insulation resistance test.
An indicative procedure of how to measure the insulation resistance of a system is given in
the table below:
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