live conductors in the immediate vicinity, or that there are no other consumers depending
on the same circuit.
Direct method - Ground conductor current measured using ammeter on the ground con-
ductor
1 Measuring device
2 Battery charging system
8 Isolated setup of test piece
9 Measuring line
Example: measuring ground conductor current
through ground conductor directly on the battery
charging system
Differential current method - Ground conductor current measured using an ammeter
on the N and L conductors
1 Measuring device
2 Battery charging system
9 Measuring line
Example: measuring ground conductor current dir-
ectly on the battery charging system using the differ-
ential current method
As with an FI switch, the currents between the outer conductor(s) (L) and the neutral
conductor (N) are compared using a converter. The difference is displayed.
The ground conductor leakage current must not exceed the limit value of 3.5 mA during
this measurement (direct or differential current method **).
**) These requirements comply with DIN VDE 0701-0702 and ÖVE/ÖNORM E8701-1.
Also refer to the applicable requirements and standards in your country.
51
EN
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