Electrical installation
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4. Connect the cables as follows:
- Cut the cables to suitable length. Strip the cables and conductors. Fasten the
cable lugs to the conductor ends.
- Twist the cable shields into bundles and connect to cabinet PE (ground)
busbar.
- Connect the phase conductors to the output terminals. See the Connection
diagram above.
- Tighten the phase conductors and PE to 70 N·m (50 lbf·ft).
5. Refit the shrouds and close the door.
6. At the motor, connect the cables according to the Connection diagram above. For
minimum radio frequency interference and motor bearing current ground the
cable shield 360° at the lead-through of the motor terminal box, or ground the
cable by twisting the shield as follows: flattened width >
1/5 × length. For the
motor specific instructions, see the manufacturer’s user manual.
a
b
b> 1/5 × a
Alternative 1:
360° grounding of the shield
Conductive gasket
Alternative cable shield grounding means at the
motor end
Alternative 2:
grounding the twisted
shield
6
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