In 1982, the Navy published its first power supply
guideline document entitled "Navy Power Supply Reliability," NAVMAT
P-4855-1. That document primarily addressed reliability concerns with low
voltage power supplies. In 1989, the Navy published the first update to
the original document by adding a section on high voltage design and
manufacturing guidelines. This 1999 publication replaces NAVMAT P-4855-IA
and is focused on specifying, selecting and fielding power supplies in an
acquisition reform and commercial practices environment.
As a useful reference tool, this guide will assist Navy
managers, weapon system contractors and power supply vendors in identifying and
understanding the alternatives and options available in selecting best power
supply value. Particular attention has been given to emphasizing best
value for each of three categories of power supplies:
Commercial-Off-The-Shelf/Non-Developmental Items (COTS/NDI), Modified COTS/NDI,
and Custom. In addition, a technique is provided for measuring Total
Ownership Costs.
This document is divided into five sections.
Section I is written for program managers and provides basic but critical points
to consider in acquiring power supplies. Section 2 addresses Power System
Considerations and their impact on power supply design, selection, and
application. Sections 3, 4 and 5 provide guidance in the design, test and
manufacturing of Low Voltage DC Power Supplies, High Voltage DC Power Supplies,
and AC Power Supplies, i.e., Inverters, Frequency Changers, and Uninterruptible
Power Supplies.
The appendices contain a variety of checklists, platform
power characteristics, derating criteria and a glossary of specialized
terms.
