6-12 (16) 2UEA001270 Rev. F ACS2000 User manual
Chapter 6 - Electrical installation
High voltages will be present in the terminal entry unit. High voltages can
cause flashover between the potential of different phase conductors and
the potential of a phase conductor and earth.
Therefore, a minimum clearance of 55 mm [2 in] must be maintained
between each cable and the terminals of any other phase, and a minimum
of 75 mm [3 in] from each cable to any exterior cabinet wall.
Busbar details • Busbar thickness: 6.4 mm [0.25 in]
• Hole diameter for fastening bolts: 13 mm [0.5 in]
• The busbars are suitable for both IEC and NEMA lug-type cable
connectors.
6.6.3.3 Bolted busbar connections
Material requirements Use galvanized bolts and nuts as specified in Table 6-2.
Table 6-2 Hardware requirements
Connection type This connection (see Figure 6-9) is recommended when connecting a
cable lug (3) to a busbar (4):
Figure 6-9 Connection with Belleville spring and flat washer
Bolt size Grade Dry torque value
M12 8.8 54 Nm
1/2 inch 5 40 ft-lbs
Legend
1 Belleville washer
2Flat washer
3 Cable lug
4 Busbar
12
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