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|  MIL-C-63550E(AR)
NATIONAL AEROSPACE STANDARDS
- Splice, Conductor, Heat Shrinkable,
NAS 1747
Insulated, Specification for
(Application for copies should be addressed to the National Standards Asso-
ciation, Inc., 5161 River Roads Washington$ D.C. 20016.)
(Technical society and technical association specifications and standards
are generally available for reference from libraries. They are also distrib-
uted among technical groups and using Federal agencies.)
3.
REQUIREMENTS
3.1 Item definition. The electrical cable assemblies specified herein
shall provide electrical interconnection between operating components of the
M247 gun system.
3.2 Characteristics.
3.2.1 Performance.
3.2.1.1 Direct-current (dc) resistance. The resistance measured from the
connector contact at one end of a wire to the corresponding contact at the
other end (as indicated by the assembly wiring diagram) shall be not greater
than 5 ohms when tested on a DIT-MCO Model 9100 automatic cable test system in
a two-wire measurement mode.
3.2.1.2 Insulation resistance. Unless otherwise specified on applicable
drawings, insulation between connector pins and the assembly connector and
between isolated circuits shall have a minimum resistance of 100 megohms with
50050 volts direct current (Vdc) applied.
3.2.2 Physical characteristics.
3.2.2.1 Weight. The weight of an assembly shall be not greater than the
weight specified on the applicable assembly drawing.
3.2.2.2 Length. The length of an assembly shall be as shown on the appli-
cable assembly drawing. Length measurements shall be made as indicated in
figure 1 (dimensions U, V, W, X, Y, and Z).
3.2.3 Environmental conditions.
3.2.3.1 Humidity. Each assembly shall withstand humidity conditions as
found in humid environment with up to 100 percent relative humidity.
3
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