NAVSO P-3641A, MORE POWER FOR THE DOLLAR - PRICE VS. VALUE - A TECHNICAL GUIDE (OCT-1999) [SUPERSEDES NAVMAT P-4855-1A]

NAVSO P-3641A, MORE POWER FOR THE DOLLAR - PRICE VS. VALUE - A TECHNICAL GUIDE (OCT-1999) [SUPERSEDES NAVMAT P-4855-1A]., 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-4855-1A 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 formeasuring Total Ownership Costs.This document is divided into five sections. Section 1 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.