S9407-AB-HBK-010 Datasheet, PDF (13/276 Pages) Glenair, Inc. – HANDBOOK OF SHIPBOARD ELECTROMAGNETIC SHIELDING PRACTICES

S9407-AB-HBK-010, Rev. 2
c. Section 3 describes general requirements for the preparation and installation of flexible
shielding conduit, both jacketed and non-jacketed, described in appendix D.
d. Section 4 describes the requirements for the GR2000-Series fittings (braze-on type) for
use on the flexible metal shielding conduit specified in appendix D, in which the outside
diameter dimension for each nominal size of conduit is standardized.
e. Section 5 describes the requirements for the RP2000-Series fittings (reusable type) for
use on the flexible metal shielding conduit specified in appendix D, in which the outside
diameter for each nominal size of conduit is standardized.
f. Section 6 provides cable spacing and shielding requirements applicable to naval
shipboard installations. It categorizes cable types which are in accordance with military
specifications MIL-C-17, MIL-C-915, MIL-C-24640, and MIL-C-24643. It also specifies
the use of flexible shielding conduit described in appendix D, and for extreme EMI
problems, it specifies the use of rigid shielding conduit described in section 2. It also
provides cable marking requirements.
g. Section 7 describes the requirements for shielding enclosures, including the method for
annealing mumetal. It also includes wiring practices and bonding and grounding
requirements. Additionally, a description of the shielding hardware used for connecting
to hull fittings is given. Guidelines for using aluminum or steel connectors and
backshells are also included in this section.
h. Appendix A presents the cable separation and shielding requirements of section 5 of
NAVSEA 0967-LP-283-5010 for reference purposes and, specifically, as background
information for utilizing appendix B of this handbook.
i. Appendix B provides guidelines that deal with interface situations in which two different
sets of cable spacing and shielding requirements are implemented on the same
platform. For example, it addresses the requirements of section 5 of NAVSEA 0967-
LP-283-5010 and the requirements of section 6 of either NAVSEA 0967-LP-283-5010
or S9407-AB-HBK-010 (including Revision 2).
Although such interface situations are undesirable, they often exist and must be dealt
with. It must be kept in mind that the requirements of both systems must be satisfied at
the interface. Sometimes this results in more stringent spacing requirements than that
of either system installed independently.
j. Appendix C contains the Qualified Products List (QPL) for the flexible shielding conduit
specified in appendix D, and certain conduit fittings specified in sections 4 and 5.
k. Appendix D contains a specification which established new standards for flexible
shielding conduit. It describes standard dimensions and tolerances for 11 different
sizes of conduit, including minimum ID, OD over braid, and OD over jacket. Flexible
shielding conduit (nonjacketed or rubber-jacketed) is specified as the primary means of
shielding signal cables in submarines and other ships.
l. Appendix E presents a cable comparison chart for reference purposes. It compares the
MIL-C-915 Shipboard cable types with its equivalent MIL-C-24643 Low-Smoke types,
and also with its equivalent MIL-C-24640 Lightweight types.
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