7.1.3 Power Connections 12-Pulse Adjustable Frequency Drives
NOTICE!
All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. UL
applications require 167°F [75°C] copper conductors. Non-UL applications can use 167°F and 194°F [75 and 90°C] copper
conductors.
The power cable connections are situated as shown in Figure 7.31. Dimensioning of cable cross-section must be done in
accordance with the current ratings and local legislation. See chapter 7.8 EMC-compatible Installation for correct
dimensioning of motor cable cross-section and length.
For protection of the adjustable frequency drive, use the recommended fuses unless the unit is fitted with built-in fuses.
Recommended fuses can be seen in chapter 7.2.1 Fuses. Always ensure that fusing complies with local regulations.
The AC line input connection is fitted to the line power switch if 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)
Figure 7.31 AC line input connections
NOTICE!
For more information, see chapter 7.8 EMC-compatible Installation.
Electrical Installation Design Guide
MG34S222 Danfoss A/S © Rev. 2014-02-10 All rights reserved. 205
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