￭ Frame R8i multiples
The following figure shows a connection example of a supply unit with multiple frame R8i
modules (3×R8i).
AC supply1
Incoming cubicleA
Main circuit breaker2
AC-DC charging kit (line-up charging)3
DC switch-disconnector for line-up charging4
LCL filter cubiclesB1,
B2
AC fuses5
LCL filter kit6
IGBT supply module cubicleC
DC-DC charging kit7
DC link8
DC switch-disconnector9
DC fuse10
Common mode filter11
IGBT supply module (frame R8i)12
Operation principle and hardware description 21
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