Bolted Connections; Fig. 70. Bolted Busbar Connection - ABB ACS5000 User Manual

6.7.2.3. Bolted connections

6.7.2.3.1. 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.
6.7.2.3.2. Connection type
The following connection type recommended when a cable lug (4, Fig. 70) is connected to a
busbar:
– Spring washer (1, Fig. 70) and flat washer (2, Fig. 70) on each side of the busbar (4, Fig. 70).
Other washers can be used, provided they maintain the required contact pressure.
– Use cable lugs suitable for M12 bolts.
4
3
2
1

Fig. 70. Bolted busbar connection

6.7.2.3.3. 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
connection does not have to be lubricated.
6.7.2.3.4. Tightening torque
ABB recommends a tightening torque of 40 Nm for M10 bolts. For other sizes, follow the
manufacturer's recommendations.
PRODUCT
ACS5000W gen. 2
2
1
Key:
(1) Spring washer
(2) Flat washer
(3) Cable lug
(4) Busbar
DOCUMENT KIND
User manual
] coating) is used, the
2
DOCUMENT ID.
3BHS799208 E01
ELECTRICAL INSTALLATION
REV. LANG. PAGE
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