3.3 Electrical Installation
3.3.1 Cables General
CAUTION
Cables general:
Always comply with national and local regulations on
cable cross-sections.
Frame
size
200-240 V
[kW]
380-500 V
[kW]
525-690 V
[kW]
Cable for Tightening up torque
[Nm]
B1 5.5-7.5 11-15 15
Mains, Motor cables 1.8
Relay 0.5-0.6
Earth 2-3
B2 11 18.5-22 18.5-22
Mains 4.5
Motor cables 4.5
Relay 0.5-0.6
Earth 2-3
B3 5.5-7.5 11-15 15
Mains, Motor cables 1.8
Relay 0.5-0.6
Earth 2-3
B4 11-15 18.5-30 18.5-22
Mains, Motor cables 4.5
Relay 0.5-0.6
Earth 2-3
Table 3.5 Tightening-up Torque
3.3.2
Removal of Knockouts for Extra
Cables
•
Remove cable entry from the frequency converter
(Avoiding foreign parts in the frequency
converter when removing knockouts)
•
Cable entry has to be supported around the
knockout that is to be removed
•
The knockout can now be removed with a strong
mandrel and a hammer
•
Remove burrs from the hole
•
Mount cable entry on frequency converter
3.3.3
Mains Connection for B1, B2 and B3
NOTE
Frequency converter sizes differ, but terminal numbers are
always the same. Incoming power is always 91, 92, 93
labeled L1, L2, L3.
Illustration 3.6 How to Connect to Mains and Earthing for B1
and B2
How to Install
Operating Instructions VLT
®
CDS302 and CDS303
MG34M302 - VLT
®
is a registered Danfoss trademark/Commercial Compressor 17
3
3
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