Bolted Connections; Figure 6-19 Bolted Busbar Connection - ABB ACS5000 User Manual

6.7.2.3. Bolted connections

Material requirements
Use stainless steel bolts and nuts with the appropriate steel grade and property
class for the connection (recommended: A2-70 [designation according to
ISO 3506]).
Nuts with bonded coating can be used as an alternative to uncoated stainless steel
nuts.
Connection type
The following connection type is recommended when a cable lug
(Fig. 6-19: 4) is connected to a busbar:
– Spring washer (Fig. 6-19: 1) and flat washer (Fig. 6-19: 2) on each side of the
busbar (Fig. 6-19: 3).
Other washers can be used, provided they maintain the required contact
pressure.
– Use cable lugs suitable for M12 bolts.

Figure 6-19 Bolted busbar connection

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
the connection does not have to be lubricated.
Tightening torque
– Tighten bolted connections with bolts of sizes M10 and greater with the
recommended nominal torque for the bolt size used.
PRODUCT
ACS5000W
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DOCUMENT KIND
User manual
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DOCUMENT ID.
3BHS799208 E01
ELECTRICAL INSTALLATION
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] coating) is used,
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