ABB ACS2000 DFE User Manual page 86

86 ACS2000 DFE UM 3BHS360367 ZAB E01 REV. K
Bolted connections
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References
Material requirements
—
Use stainless steel bolts and nuts with the appro-
6-7 Bolted busbar
connection
priate steel grade and property class for the con-
nection (recommended: A2-70 [designation
according to ISO 3506]).
Nuts with bonded coating can be used as an alter-
native to uncoated stainless steel nuts.
Connection type
The following connection type is recommended
when a cable lug
• Spring washer
side of the busbar
Other washers can be used, provided they
maintain the required contact pressure.
• Cable lugs suitable for M12 bolts.
1
—
6-7
(4) is connected to a busbar:
(1) and flat washer
(3).
3
2
2
1
Lubrication
If stainless steel bolts and nuts are used, lubricate
the thread and head contact surface of the bolt
using recommended pasts, eg, Molykote D paste.
—
If a coated nut (eg, with bonded
molybdenum-disulfide [MoS
coating) is used, the connection
does not have to be lubricated.
(2) on each
Tightening torque
Tighten bolted connections with bolts of sizes M10
and greater with the recommended nominal
torque for the bolt size used.
4
]
2