gal/min at a total dynamic head of [3050][_____] mm [10][_____] feet.
Motor shall include automatic thermal overload protection. Provide an
internal magnetic float switch, stainless steel shaft, bronze impeller, and
cast iron motor housing and volute. Provide a continuous waterproof cable
with watertight plug of sufficient length to include slack and allow
connection to receptacle shown.
2.18
OIL FUSE CUTOUTS
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NOTE: Fuses shall normally be rated at 150 percent
of the full load current rating of the transformer
or the device protected.
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ANSI C37.44. [Provide subway type oil fuse cutouts.] Rate cutouts [_____]
volts, [_____] amperes, [_____] kV BIL. Provide hermetically sealed
cutouts with expansion chambers for full rating. Provide with[ gang
operating mechanism,] mounting channel, oil, compound, and fuse links rated
[_____] amperes. Mount cutout on galvanized steel junction boxes with
bolted-on covers, unless indicated otherwise.
2.19
TRANSFORMERS, SUBSTATIONS AND SWITCHGEAR
Provide as specified in Section 16360 SECONDARY UNIT SUBSTATION and Section
16272 PAD MOUNTED TRANSFORMERS.
2.20
EMERGENCY GENERATOR AND AUTOMATIC TRANSFER SWITCH SYSTEM
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NOTE: Section 16237N SINGLE OPERATION GENERATOR
SETS shall be edited and modified as necessary to
suit the specific airfield installation. Airfield
requirements include the following. Emergency
generator sets shall be rated 0.8 power factor
lagging, either 4160/2400 or 480/277 volts, 3-phase,
4-wire, grounded wye, 60 Hz. Governor shall provide
speed regulation of 5 percent from no load to full
load. Provide manual voltage control,
electromagnetic interference suppression, batteries,
battery charger, and repair parts. Parallel
operation and remote control speed adjustments are
not required. Automatic transfer switch shall be
specified for ratings needed for the airfield
lighting installation. The generator and automatic
transfer switch system shall accomplish a complete
transfer to the emergency power supply within 15
seconds of interruption of the normal power supply
for Category I airfields. Time delay to override
momentary normal source outages to delay all
transfer switch and engine starting signals shall be
set at one second.
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NOTE: Insert appropriate Section number and title
in the blank below using format per UFC 1-300-02.
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SECTION 16522N
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