power supply systems, which were procured as
Government-furnished/Contractor installed equipment,
must be reviewed and concurred by NFESC ECDET, Code
65.
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PART 1
GENERAL
1.1
REFERENCES
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NOTE: Issue (date) of references included in
project specifications need not be more current than
provided by the latest guide specification. Use of
SpecsIntact automated reference checking is
recommended for projects based on older guide
specifications.
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The publications listed below form a part of this specification to the
extent referenced. The publications are referred to within the text by the
basic designation only.
NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)
NFPA 70
(2005) National Electrical Code
1.2
DEFINITIONS
1.2.1
Uninterruptible Power Supply (UPS)
The uninterruptible power supply system described herein shall denote a
solid state power system which will provide continuous regulated single
phase or three phase AC power at its output terminals, while operating from
either an AC power source or from a battery system.
1.2.2
Battery System
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NOTE: Sealed battery or valve regulated is more
commonly known as maintenance free battery. The
term maintenance free is a misnomer, since all
battery systems require maintenance. The term
"maintenance free" signify that no water may be
added to the cell.
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The battery is an electrochemical device that stores energy at one time for
use at another. The energy is stored in chemical form and converted to
electrical form during discharge, in the event of AC power failure. Battery
system may be lead calcium alloy type, water must be added in the cells, or
sealed type, (valve regulated), water cannot be added in the cells.
1.2.3
Electrolyte
The acid solution surrounding the plates of a battery cell, usually
consisting of 1.250 specific gravity sulfuric acid.
SECTION 16262N
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