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NAVSO
P-3641: Navy Power Supply Reliability Design & Mfg
Guidelines

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3.6 Input Power
Specifications
Single-Platform
Tradeoffs

The tradeoffs for equipment for
single-platform use are relatively simple. The
shipboard choice indicated by a formal tradeoff
study almost always results in the use of 60
Hz, 3-phase power at either 115 VAC or 440 VAC,
the latter being centrally transformed to 115
VAC or some DC voltage, such as 155 VDC which
is the voltage obtained from line rectification
of 3-phase 115 VAC.

The aircraft choice indicated by a formal
tradeoff study almost always results in 400
Hz, 3-phase power, at 115/200 VAC with
consideration given to future 270 VDC
operation, since the extra cost in system
tradeoff penalties is usually
insignificant.