Connection diagram – 2×D8D, 6-pulse, external charging and pre-magnetizing
Supply unit cubicle of driveBExternal installation outside drive cabinetA
DC link6Medium voltage/low voltage switchboard1
Supply modules7Switchgear including:2
• Disconnecting device
• Breaker/contactor
AC fuses8Combined transformer pre-magnetizing circuit
and drive charging circuit
3
360 degrees grounding9Supply transformer4
Overcurrent and short-circuit protection of input
cabling
5
Note:
*) Use symmetrical supply cabling to ensure equal current sharing between parallel diode bridges. Required
minimum length of the cables is 5 meters.
For cable and component selection information, see chapter Guidelines for planning the electrical installation.
96 Electrical installation
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