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C120-H007-05EN 67
6.2 Power Supply Facilities
6.2 Power Supply Facilities
Select power supply facilities after considering the input power requirements of the
server system (see Section 6.1), the availability of a power source at the installation
site, and the operational importance of the server system.
6.2.1 Kinds and uses of power supply facilities
Power supply facilities are used for converting voltages, reducing leakage current,
keeping a server system free from power failures, shaping waveforms, converting
frequencies, and reducing harmonic currents.
Table 6.2 lists the kinds of power supply facilities available, and their fitness for
particular uses.
Note: Ο means fit.
× means not fit.
Among the uses of power supply facilities, the reduction in leakage current and
freedom from power failures are highlighted below.
Table 6.2 Types of available power supply facilities and usage
Type of power
supply facility
Use
Voltage
conversion
Freedom
from power
failures
Waveform
shaping
Reduction
of
harmonic
current
Commercial power
source
××××
Transformer Ο×××
UPS:
Constant commercial
type
×Ο××
UPS:
Constant inverter type
ΟΟΟΟ