5.
Engine overcrank shutdown
6.
Engine overspeed shutdown
][2.2.7.1
Storage Battery
Provide storage batteries of suitable rating and capacity to supply and
maintain power for the remote alarm annunciator for a period of 90 minutes
minimum without the voltage applied falling below 87.5 percent of normal.
Provide a[ 120][ _____] volt ac automatic battery charger.
]2.2.8
Generator Circuit Breaker
UL 489, molded case, adjustable thermal magnetic trip type circuit breaker.
The circuit breaker continuous current rating shall be adequate for the
power rating of the engine-generator set and the circuit breaker shall be
rated to withstand the short circuit current provided by the generator set.
Provide circuit breaker in a NEMA ICS 6, Type[ 1][ _____] enclosure mounted
on the engine-generator set.
2.2.9
Electrical Support Equipment
Furnish with respective pieces of equipment. Motors, controllers,
contactors, and disconnects shall conform to Section 16402 INTERIOR
DISTRIBUTION SYSTEM. Provide electrical connections under Section 16402
INTERIOR DISTRIBUTION SYSTEM. Provide controllers and contactors with
maximum of 120-volt control circuits, and auxiliary contacts for use with
controls furnished. When motors and equipment furnished are larger than
size indicated, the cost of providing additional electrical service and
related work shall be included under this section.
[2.2.10
Weatherproof Enclosure
Provide for each engine-generator set and fabricate from zinc coated or
phosphatized and shop primed 16 gage minimum sheet steel in accordance with
the manufacturer's standard design. Provide a complete, weatherproof
enclosure for the engine, generator, and auxiliary systems and equipment.
Support exhaust piping and silencer so that the turbocharger is not
subjected to exhaust system weight or lateral forces generated in
connecting piping that exceed the engine manufacturer's maximum allowed
forces and moments. The housing shall have sufficient louvered openings to
allow entrance of outside air for engine and generator cooling at full
load. Design louvered openings to exclude driving rain and snow. Provide
properly arranged and sized, hinged panels in the enclosure to allow
convenient access to the engine, generator, and control equipment for
maintenance and operational procedures. Provide hinged panels with spring
type latches which shall hold the panels closed securely and will not allow
them to vibrate. Brace the housing internally to prevent excessive
vibration when the set is in operation.
]2.3
SPECIAL WRENCHES AND TOOLS
Wrenches and tools specifically designed and required to work on the new
equipment, which are not commercially available as standard mechanic's
tools, shall be furnished to the Contracting Officer.
2.4
IDENTIFICATION OF EQUIPMENT
Provide plates and tags sized so that inscription is readily legible to
SECTION 16237N
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