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26 Operation principle and hardware description
Overview diagram – 2×D8T, 12-pulse
This is an overview diagram of a 12-pulse supply unit with two D8T supply modules.
Cubicle
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-
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A
Incoming cubicle (ICU)
B
Diode supply unit cubicle
No.
Explanation
1a.
AC supply. Winding Y
1b.
AC supply. Winding D
2.
Main switch-disconnector (6-pole) ABB or third party
3.
Main AC fuses
4.
Main contactors
5.
Diode supply modules
6.
DC link
7.
Connection to drive DC link
Available through
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-
ABB or third party
ABB or third party
ABB
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