Power cabling
vacon • 37
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
4
Figure 25. Cable gland.
Tightening torque and dimensions of cable glands:
UL installations:
Plastic cable glands are recommended. If metal cable glands are needed, all insulation
system and protective grounding requirements have to be fulfilled in accordance with
the national electrical regulations and IEC 61800-5-1.
6
•
Screw the cable glands (in compliance with CE rules) on the cable entry
holes using the proper tightening torque as shown in Table 16.
Table 16. Tightening torque and dimension of cable glands.
Enclosure
size
Gland screw
type
[metric]
Tightening torque
[Nm]
lbs-in.
MU2
M16
1.0
8.9
M20
2.0
17.7
M25
4.0
35.5
MU3
M16
1.0
8.9
M25
4.0
35.5
7
•
Flexible conduit (plastic or metallic) are used as raceway for wires and
cables in accordance with the National Electrical Code.
8
•
To connect NPT conduits to the metric threads of cable entries, adapters
must be used. These adapters must first be connected to the cable entries
plate, using the proper tightening torque as shown in the Table 16, and
then to the pipes according to UL regulations.
9
•
For MU2 three NPT-to-Metric adapters must be used: number two 1/2” -
M20 adapters and number one 3/4” - M25 adapter. See Table 17 for further
details.
10
•
For MU3 three NPT-to-Metric adapters must be used: 3/4” - M25 adapt-
ers. See Table 17 for further details.