Wiring Diagrams - Grundfos MP 204 Montage- Und Betriebsanleitung

8.5 Wiring diagrams

8.5.1 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
to approximately 50 A is therefore not required.
3 ~
L L L
1 2 3
1 3 5
K1
2 4 6
E1
Pt100
Pt100/Pt1000
Fig. 8 Three-phase connection
12
2
. A special fuse unit up
Maximum 10 A
MP 204
If larger backup fuses are used, the voltage to the
L1, L2 and L3 must be protected separately. We
recommend a maximum of 10 A or less.
13
K1
14
21
S0
22
S1
A1
K1
A2
95
E1
96
13
14