157
EN
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 the ground conductor current in
the distributor
As with an FI switch, the currents between the outer cables (L1, L2, L3) and the neutral
conductor (N) are compared using a converter. The difference is displayed.
The ground conductor leakage current must not exceed 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.
Contact current The following points must be observed during the contact current measurement:
- Do not perform the measurement until the ground conductor current measurement
has been carried out successfully
- The device must be in charge mode
Measurement is taken between a grounded point and the touchable, conductive part that
are not connected to the ground conductor.
The contact current must not exceed 0.5 mA.
1 Measuring device
2 Battery charging system
6.2 Touchable, conductive part not connected to the
ground conductor
8 Isolated setup of test piece
9 Measuring line
Ri 1 - 2 k
PE L1
1
2
999
N
PE L1 N
mA
PE
mA
L1
1
2
9
N
PE L1 N
9
8
6.2
R
i
1-2kΩ
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