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Affinity User Guide 69
Issue Number: 5 www.controltechniques.com
Figure 4-5 Size 2 ground connections
Figure 4-6 Size 3 ground connections
Figure 4-7 Size 4, 5 and 6 ground connections
4.2 AC supply requirements
Voltage:
BAx2xx 200V to 240V ±10%
BAx4xx 380V to 480V ±10%
BAx5xx 500V to 575V ±10%
BAx6xx 500V to 690V ±10%
Number of phases: 3
Maximum supply imbalance: 2% negative phase sequence (equivalent
to 3% voltage imbalance between phases).
Frequency range: 48 to 65 Hz
For UL compliance only, the maximum supply symmetrical fault current
must be limited to 100kA
4.2.1 Supply types
All drives are suitable for use on any supply type i.e TN-S, TN-C-S, TT
and IT.
• Supplies with voltage up to 600V may have grounding at any
potential, i.e. neutral, centre or corner (“grounded delta”)
• Supplies with voltage above 600V may not have corner grounding
Drives are suitable for use on supplies of installation category III and
lower, according to IEC60664-1. This means they may be connected
permanently to the supply at its origin in a building, but for outdoor
installation additional over-voltage suppression (transient voltage surge
suppression) must be provided to reduce category IV to category III.
Plain washers
Spring washer
M6 bolt
The ground loop impedance must conform to the
requirements of local safety regulations.
The drive must be grounded by a connection capable of
carrying the prospective fault current until the protective
device (fuse, etc.) disconnects the AC supply.
The ground connections must be inspected and tested at
appropriate intervals.
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