2.7
SERVICE ENTRANCE PLATES (SET-UP PANELS)
Shall be minimum 3 mm 1/8 inch thick steel, sized [300 by 300 mm] [12 by 12
inches] [_____] and shall have a 6 mm 1/4 inchextruded brass frame for
mounting to shielded enclosure wall panel.
2.8
NAMEPLATES
Major components of equipment shall have manufacturer's name, address,
catalog number, model, style, and type on a plate securely and
conspicuously attached to each item of equipment. Nameplates for
electrical apparatus shall conform to NEMA standards.
2.9
LIGHTING
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NOTE: In shielded enclosures where electronic
equipment is very sensitive to EMI, specify a dual
lighting system so that fluorescent lighting can be
turned off and incandescent lighting turned on
during sensitive tests or operations.
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Provide lighting fixtures as indicated [and as specified in Section 16510
INTERIOR LIGHTING.] Fluorescent lighting fixtures shall meet the
requirements of MIL-STD-461, Class C3, Group I for both conducted and
radiated interference.
2.10
EXHAUST FANS
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NOTE: This paragraph cites only minimum
requirements. Design calculations are necessary to
size HVAC to suit room size and equipment/personnel
contained within. Exhaust fan motors located inside
shielded enclosure must meet MIL-STD-461, Class C3,
Group 1.
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FS A-A-50032, Type I, Class 1 for direct drive, Class 2 for belt drive,
Style A for wall or window mounting, Style B for roof or ceiling mounting,
except that fans shall be centrifugal type with aluminum housing and wheel.
Additionally, exhaust fans shall meet the electromagnetic compatibility
requirements of FS A-A-50032. Motors shall be completely shielded from the
airstream. Provide exhaust opening and gravity closing type automatic
louvers. Provide exhaust which can supply 15 room air changes per hour.
Capacity of fans shall be certified in accordance with AMCA 210, and shall
be not greater than 110 percent of the indicated capacity at indicated
pressure drop.
2.11
COAXIAL CABLE PENETRATIONS
For each coaxial cable entering the shielded enclosures, provide RF
waveguide threaded insert with cap and chain on shielded room side of
enclosure.
SECTION 13094N
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