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6
vacon • 80 Electrical cabling and connections
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
1)
Due to insufficient number of terminal bolt connections for required amount of cables, the cabinet must be
equipped with an external flexible cable connection block at both mains and motor ends if stiff cable type is
used.
Data in Italic refer to drives with 12-pulse supply.
Units with 6-pulse supply
Note that all other sizes have 3 input terminals except for size CH74, which has 9 input terminals.
Units with 12-pulse supply
12-pulse supply can be used with drives of sizes CH72 and CH74. The number of input terminals for
both is 6.
If 12-pulse supply is used, pay also attention to the fuse selection, see page 82 and page 83.
See the tightening torques of bolts in Table 40.
We recommend a low-impedance grounding of the motor cable shield for better performance.
Because of several possible cable installations and environmental conditions, it is very important to
consider local regulations and the IEC/EN standards.
CH74 1030_6 1030 4*(3*185+95) 300 Cu/Al *** 4/M12
CH74 1180_6 1180 6*(3*120+95) 300 Cu/Al *** 6/M12
CH74
1180_6
1300_6 1180
1300
4*(3*240+120) 300 Cu/Al *** 4/M12
CH74 1300_6 1300 6*(3*150+95) 300 Cu/Al *** 6/M12
CH74 1500_6 1500 6*(3*185+95) 300 Cu/Al *** 6/M12
CH74
1)
1500_6 1500 6*(3*185+95) 300 Cu/Al *** 4/M12
CH74 1700_6 1700 6*(3*240+120) 300 Cu/Al *** 6/M12
CH74
1)
1700_6 1700 6*(3*240+120) 300 Cu/Al *** 4/M12
Table 40. Tightening torques of bolts
Bolt
Tightening torque
[Nm]
Max. inward thread length
[mm]
M8 20 10
M10 40 22
M12 70 22
Grounding bolt
(see page 91)
13.5 -
Table 39. Mains cable sizes, 525—690 V
Chassis Type I
th
Mains cable
Cu [mm
2
]
Terminal cable size
Max. number
of cables/
Bolt size
Main terminal
[mm
2
], max.
Earth terminal
[mm
2
]