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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.
IPU cubicle 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.
Door closed
1.
Auxiliary voltage disconnector
2.
Meters
3.
Charging circuit disconnector, AC side
4.
Option +F259: Grounding switch
5.
Charging circuit disconnector, DC side
6.
Operating switch
7.
Option +F255: Main circuit breaker
Operation principle and hardware description 19
5
6
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