MIL-HDBK 1028/6A
(2)
Pressure gauge (supply air inlet to regulator),
(3)
Pressure gauge (starting air connection),
(4)
Main blow-off valve operator,
(5)
Strainer blow-off valve operator, and
(6)
Tool air shutoff valve operator.
7.1.3
Electrical Equipment Components. Electrical apparatus and
service connection shall be contained in the forward half of the enclosure.
Each point shall contain 60 Hz and 400 Hz components as follows.
7.1.3.1
60 Hz Components.
The 60 Hz components shall be as follows:
a) 60 Hz input circuit breaker(s) three-pole, 600 V. In
situations where the 400 Hz converter is located at the apron service
point, the input circuit breaker shall be sized to include the 400 Hz
converter load. The circuit breaker shall be operated from the front of
the service point enclosure.
b) Two 100 ampere, three-pole, 600 V, 60 Hz, molded case circuit
breakers, one breaker shall be mounted on the interior of each side panel.
c) Two 100 ampere, 480 V, three-phase, four-wire, 60 Hz
receptacles conforming to MIL-C-22992, Connectors, Plugs and Receptacles,
Electrical, Waterproof, Quick Disconnect, Heavy Duty Type, (Class L), and
MS90555-C-44-150S (Government-furnished equipment). This receptacle will
match cable plugs MS90556C-44-151P, MS905556-C-44-152P, or
MS90556-C-44-156P provided with the ground support equipment. One
receptacle shall be mounted on the exterior of each side panel.
d) One 3 kVA, one-phase, 480-120 V, 60 Hz, dry-type transformer
with two-pole primary circuit breaker and a one-pole,
20-ampere secondary breaker. The transformer shall provide power for
control, 120 V receptacles, and obstruction lights. The transformer and
the protecting breakers shall be mounted on the interior sheet steel
barrier between the mechanical and electrical sections.
e) Two 20 ampere, 125 V, one-phase, two-pole, three-wire, 60 Hz,
weatherproof receptacles with ground-fault interrupting. One receptacle
shall be mounted on each of the exterior side panels.
f) Four obstruction warning light fixtures shall be furnished
for each service point enclosure. Fixtures shall consist of cast aluminum
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