Power Supply Facilities For Air Conditioners; Facility Control Panels - Fujitsu M10 Series Installation Planning Manual

Table 3.1 Kinds, uses, and locations of power supply facilities (2/2)
Power supply
Separate transformers
Step-down transformers
(200 V to 100 V)
Distribution panels
Grounding facilities
3.5.2

Power supply facilities for air conditioners

Air conditioners or air conditioning control panels must be located for correct and
efficient operation of the computer room.
3.5.3

Facility control panels

Facility control panels, which are used to run facilities in auto mode or shut them off
immediately in an emergency, must be located to allow easy access.
C120-H007-08EN
Use
Low-voltage transformers used
when:
• The supply voltage available to
the building and the voltage
required by the server system
differ.
• A voltage regulator, such as a
UPS, is installed in a separate
building or at a remote location.
• Power is fed from a high-
voltage transformer that is
shared by other facilities,
without using a voltage
regulator.
Transforms 200 V, from a high-
voltage transformer and voltage
regulator, to suit certain
equipment which operates
at 100 V.
Distributes power to server
system.
Used to ground server system.
3.5 Power Supply Facilities
Location
Separator transformers, when
used, are typically installed in a
computer room.
Step-down transformers, when
used, are typically installed in a
computer room.
Installed in a computer room.
The grounding cable is led to the
distribution panel for distribution.
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