8.2.3 Power Connections 12-Pulse Drives
Cabling and Fusing
NOTE
Cables General
All cabling must comply with national and local
regulations on cable cross-sections and ambient
temperature. UL applications require 75°C copper
conductors. 75 and 90°C copper conductors are thermally
acceptable for the frequency converter to use in non UL
applications.
The power cable connections are situated as shown below.
Dimensioning of cable cross section must be done in
accordance with the current ratings and local legislation.
See for details.
For protection of the frequency converter, the
recommended fuses must be used or the unit must be
with built-in fuses. Recommended fuses can be seen in the
tables of the fuse section. Always ensure that proper fusing
is made according to local regulation.
The mains connection is fitted to the mains switch if this is
included.
6 Phase
power
input
130BB693.10
91-1 (L1-1)
92-1 (L2-1)
93-1 (L3-1)
91-2
92-2
93-2
95 PE
(L2-2)
(L1-2)
(L3-2)
NOTE
The motor cable must be screened/armoured. If an
unscreened/unarmoured cable is used, some EMC
requirements are not complied with. Use a screened/
armoured motor cable to comply with EMC emission
specifications. For more information, see EMC specifications
in the Design Guide.
See for correct dimensioning of motor cable cross-section
and length.
Electrical Installation FC 300 Design Guide
180 MG.33.BD.02 - VLT
®
is a registered Danfoss trademark
88
To Next Page
Loading...
Need help?
General