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Incoming cubicle
￭
This section shows examples of incoming cubicle layout. The cubicle contains the
main switching and disconnecting devices. The input power cables are connected to
the incoming cubicle through cabinet bottom. The components, layout and size vary
depending on the supply unit size and selected options. The top cable entry (option
+H351) increases the cubicle height.
Input cubicle (IPU) does not contain main disconnecting device (main
switch-disconnector or main circuit breaker), but is otherwise similar.
Supply units with high power can contain two incoming cubicles. Then only one of
them contains charging components, otherwise the cubicles are similar.
Incoming cubicle for frame R7i (door closed)
1.
Meters
2.
V-meter selector switch [S5]
3.
DC link charging switch [Q40]
4.
Auxiliary voltage switch
5.
Charging switch
Operation principle and hardware description 19
1
2
3
4
5
6
7
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