Fujitsu PRIMECENTER M1 User Manual page 70

Power Distribution
The connection conditions described in the relevant manuals for the integrated
rack components should be complied with in all cases.
Redundancy concept
The power supply to the PRIMECENTER M1 19-inch rack can be included
optionally as part of a redundancy concept. In the simplest scenario,
redundancy is achieved with the 3-phase mains connection by distributing
redundant power supplies to the phases.
Ever higher redundancy is achieved by duplicating the current distribution
components so that the PRIMECENTER M1 19-inch rack can be connected to
two independent inhouse power distribution networks via a dual power feed.
This option is offered both in 1-phase and 3-phase socket strips.
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CAUTION!
Remember in configurations with several mains supply cables that all
cables must be disconnected before working with the cabling so that
there is no current flowing to the rack!
The power supply complies with the requirements of the EN60950 regulations.
This allows a PRIMECENTER M1 19-inch rack to be connected with flexible 3
or 5-wire cables to a rated current of up to 16 A/32 A/50 A per phase. The
respective line cross-sections should be noted.
Because of the high number of power supply units within the PRIMECENTER
M1 19-inch rack , the configuration can carry leakage currents > 3.5 mA. For
this reason, the PRIMECENTER M1 19-inch rack may generally only be
connected to internal power distribution networks via rigid connections or via
industrial connections in accordance with IEC309.
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Note the requirements outlined in the data sheets when installing the
power distribution unit.
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