Electrical Connections - Wilo Sub TWU 3 Instrucciones De Instalación Y Funcionamiento

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5.3 Electrical connections

The electrical connection and checking work must be done by a licenced
electrician and in accordance with the local standards in force.
Check the line power voltage.
Use a cable meeting electrician standrds and connect as shown by the diagram
inside the switch box or the control unit.
The maximum cable lengh depends on the current rating of the motor and
the voltage drop acceptable at that lengh.
Before connecting the cable you have, check its lengh and cross secton against the
table below.
Maximum cable lengh (for direct starting) :
V
EM
1~
50/60 Hz
220/230 V
DM
3~
50/60 Hz
380/400 V
Weight of cable per
metre (kg)
16 (40
Motor
4 x 1 4 x 1,5
kW
mm² mm²
0,37 50 75
0,55 38 57
0,75 30 45
0,37 240
0,55 164
246
0,75 133
200
1,1 97
146
0,2
Cable
4 x 2,5 4 x 4 4 x 6
mm² mm² mm²
125
95
152
75
120
174
333
244
390
0,25 0,3 0,4
4 x 10
mm²
0,65