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MIL-C-24640/16

Revision C, June 26, 1995

Complete Document

CABLE, ELECTRIC, 600 VOLTS, LIGHT-WEIGHT, MULTI-PAIR, AWG 18, TYPE 2XSW (INCLUDING VARIATION TYPE 2XSOW)



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Superseded By: MIL-DTL-24640/16

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RENUMBERED AS MIL-DTL-24640/16
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Description / Abstract:

This specification is approved for use by all Departments and Agencies of the Department of Defense.

The requirements for acquiring the product described herein shall consist of this specification sheet and the issue of the following specification listed in that issue of the Department of Defense Index of Specifications and Standards (DODISS) specified in the solicitation: MIL-C-24640.

                               CONSTRUCTION
                               (Watertight)

FIRST -   7 strand copper conductor in accordance with ASTM B-286, tinned
          strands in accordance with ASTM B-33.  AWG size and dimensions
          in accordance with Table I.

SECOND -  Insulation material and basic construction requirements shall
          be in accordance with MIL-W-81044/12 and tested in accordance
          with the component wire ratings and requirements listed on this
          slash sheet.  Quality conformance testing shall be in accordance
          with Table VI of MIL-C-24640.

THIRD -   Two conductors, one black and one white, twisted together.  The
          pitch shall be 1 " ± ¼" (inch).

FOURTH -  Binder tape applied helically with overlap, at manufacturer's
          option.

FIFTH -   Braided shield of # 38 AWG tin coated copper strands.  Braid
          coverage shall be no less than 90% determined in accordance
          with MIL-C-27500.

SIXTH -   Shield insulation of two polyester tapes or polyester tape and
          extruded jacket.  Identification codes applied using Method 2.
          (NOTE:  This step is not required for types 2XSW1 or 2XSWA1)


SEVENTH - The required number of shielded, twisted pairs shall be cabled
          together.  Cabling sequence shall be consecutive, starting with
          number 1 from center outward.  Fillers may be used as necessary,
          to form a round cable.

EIGHTH -  Binder tape applied helically with overlap.

                       CONSTRUCTION VARIANT FOR TYPE 2XSW

NINTH -   Crosslinked polyolefin jacket. (See Table II for thickness).

                      CONSTRUCTION VARIANT FOR TYPE 2XSWA

NINTH -   Crosslinked polyolefin jacket. (See Table III for thickness).

TENTH -   Braided metal armor.  Dimensions in accordance with Table III.

                      CONSTRUCTION VARIANT FOR TYPE 2XSOW

NINTH -   Braided shield, tin coated copper strands.  Braid must be
          constructed to meet Surface Transfer Impedance requirements as
          listed herein.

TENTH -   Binder tape applied helically with overlap.

ELEVENTH - Crosslinked polyolefin jacket. (See Table IV for thickness).


TABLE I.  Component wire details TABLE II. Construction details.
Jacket          Cable         Cable
                       Number   thickness      diameter       weight
   PIN        Type       of      (inch)         (inch)        (pounds
M24640/16    number    pairs    (minimum      min    max     per 1000
                                                              feet)
                                                              (max)
---------------------------------------------------------------------

  -01UN      2XSW-1      1        0.034      0.240  0.258     52.9
  -02UN      2XSW-3      3         .041       .436   .470    175.0
  -03UN      2XSW-7      7         .044       .573   .617    330.0


TABLE III. Construction details - armored.
Jacket       Cable        Cable
                       Number   thickness    diameter     weight
   PIN        Type       of      (inch)       (inch)      (pounds
M24640/16    number    pairs    (minimum    min    max    per 1000
                                                           feet)
                                                           (max)
------------------------------------------------------------------

  -01AN      2XSWA-1     1       0.034     0.290  0.308    68.9
  -02AN      2XSWA-3     3        .041      .486   .520   210.4
  -03AN      2XSWA-7     7        .044      .623   .667   375.2


TABLE IV. Construction details - overall shield.
Diameter     Jacket         Cable      Cable
                       Number     over      thickness     diameter    weight
   PIN        Type       of      shield      (inch)        (inch)     (pounds
M24640/16    number    pairs     (inch)     (minimum     min    max     per
                                 (nom)                                 1000
                                                                       feet)
                                                                       (max)
------------------------------------------------------------------------------

  -01UO      2XSOW-3      3      0.374       0.041      0.487  0.525   227.0
  -02UO      2XSOW-7      7       .514        .044       .608   .656   401.0
  -03UO      2XSOW-12    12       .702        .047       .802   .864   665.0
  -04UO      2XSOW-19    19       .844        .050       .938  1.010   950.0
  -05UO      2XSOW-30    30      1.080        .057      1.180  1.270  1442.0