NPFC - MIL-C-3702
CABLE, POWER, ELECTRICAL: IGNITION, HIGH-TENSION
| Organization: | NPFC |
| Publication Date: | 10 March 1987 |
| Status: | inactive |
| Page Count: | 31 |
scope:
This specification covers shielded and unshielded electrical power cable for use on high-tension ignition systems (see 6.1).
The type designation shall include specification number-based cable configuration identifying system (see 1.3 and 6.2). Example of type designation:
The military specification designation shall consist of the specification number with the prefix M. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: US Army Tank-Automotive Command, ATTN: AMSTA-GDS, Warren, MI 48397-5000, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document, or by letter.
The type of shielding is identified by the letter U or S as follows (see 3.3):
U - Unshielded
S - Shielded
The cable diameter shall be designated as follows (see 3.5.1):
5 - 5 millimeter (mm) nominal diameter
7 - 7 mm nominal diameter
The upper temperature limit shall be designated in degrees Fahrenheit (°F) as follow:
L - Plus 250°F to minus 65°F
M - Plus 450°F to minus 65°F
H - Plus 600°F to minus 65°F
The conductor material shall be designated as follows (see 3.2.1):
C - Copper - 19 strands for low and medium temperature - 37 strands for high temperature S - Steel - 7 strands, corrosion resistant
Cable applications shall be designated as follows:
A - Air Force aircraft (see 4.4.1)
B - Other than Air Force aircraft
To simplify logistics and, unless otherwise specified (see 6.2), qualification and procurement of cable will be limited to the following configurations to which type designations have been assigned. Low temperature cable will not be procured for aircraft ignition systems.
TYPE DESIGNATIONS M3702-U5LS∗ M3702-S5MS∗ M3702-U5LC∗ M3702-S5MC∗ M3702-U5MS∗ M3702-S7LC∗ M3702-U5MC∗ M3702-S7MC∗ M3702-U7LC∗ M3702-S7MS∗ M3702-U7MC∗ M3702-S7HC∗ M3702-U7HC∗
NOTE: REPLACE THE ASTERISK "(∗)" WITH THE LETTER A OR B, AS APPLICABLE.
intended Use:
The cable covered by this specification is intended for use on ignition systems of internal combustion engines for aircraft, automotive vehicles, marine, and portable power... View More
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