8
6.5 Wiring diagrams
6.5.1 Three-phase system
The wiring diagram, fig. 8, shows an example of a
three-phase pump with insulation measurement.
The connections to L1, L2, L3 and "5" can be made
with a cable of up to 10 mm
2
. A special fuse unit up
to approx. 50 A is therefore not required.
If larger back-up fuses are used, the voltage to the
L1, L2 and L3 must be protected separately. A maxi-
mum of 10 A or less is recommended.
Fig. 8 Three-phase connection
TM03 0122 2205
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