MIL-DTL-3124E(SH)
4.8 Pressure drop flow. Cooler pressure drop versus flow curves shall be determined by test for the first air
cooler supplied only under each contract or order. Pressure drop shall be measured in accordance with
MIL-C-19836 and recorded at 10, 25, 50, 75, and 100 percent of maximum flow (see 3.3.26.1.1.b).
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or
order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these
personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging
requirements are maintained by the Inventory Control Point s packaging activities within the Military Service or
Defense Agency, or within the military service s system commands. Packaging data retrieval is available from the
managing Military Department s or Defense Agency s automated packaging files, CD-ROM products, or by
contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. The 60-Hertz AC generator will be used to provide ship service and emergency power when
coupled to the prime mover specified in MIL-G-3087, MIL-G-21296, or MIL-G-22077.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of this specification.
b.
When first article is required (see 3.1).
c.
Class of insulation system required (see 3.2.2).
d.
Whether single- or three-phase generators are required for ratings less than 1,000 kilowatts (see 3.3.2).
e.
Type of enclosures required (see 3.3.4).
f.
Type of bearings required (see 3.3.8).
g.
Type of shaft extension required (see 3.3.9).
h. When special airborne and structureborne noise limitations are required, and any special details,
i.
Type of coil or winding specified for electrical insulation (see 3.3.25.1).
j. Methods required to cool totally enclosed generators rated 500 kilowatts and above (see 3.3.26 and
k.
Construction criteria, if other than specified (see 3.3.26.1.1).
l.
Reliability prediction of the generator required (see 3.4.2).
m. Kilowatt rating required, if other than specified (see 3.4.4).
n.
Per-unit value of current, if other than specified (see 3.4.5).
o.
Voltage ratings required, if other than specified (see 3.4.6).
p.
When the negative-sequence impedance rating is required (see 3.4.7.2).
q.
Revolutions per minute rating required (see 3.4.8).
r.
Ambient temperature, if other than specified (see 3.4.10).
s.
Type of prime mover required (see 3.4.11).
t.
Efficiency required (see 3.4.14).
u.
Momentary inclination cycle of the generator required (see 3.4.19).
v.
If sample coil or winding is required (see 3.4.27).
w. When dynamic balance calculated values are required (see 4.6.6).
x.
When dynamic analysis is required (see 4.6.19.1.2).
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