1、 INCH-POUND MIL-DTL-24643/62 1 March 2007 DETAIL SPECIFICATION SHEET CABLE, ELECTRICAL, TYPE LSPB2SD (INCLUDING VARIATIONS LSPB2SDW, LSPB2SDOS, LSPB2SDOSW) This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product
2、described herein shall consist of this specification sheet and MIL-DTL-24643. This cable is a single or double shield twisted pair intended for use with Profibus data communication systems. This cable can be manufactured in four variations: LSPB2SD (single shield with drain, non-watertight), LSPB2SD
3、W (single shield with drain, watertight), LSPB2SDOS (double shield with drain, non-watertight), LSPB2SDOSW (double shield with drain, watertight). REQUIREMENTS: Qualification Required. Construction (Waterblocked and Non-Waterblocked)First - Copper conductor, solid, 22 AWG nominal. Second - Polyolefi
4、n insulation. Wall thickness as necessary, in order for the completed cable to meet the specified electrical requirements. Third - Two insulated conductors, twisted together with appropriate fillers to make a round cable such that they meet the electrical requirements specified below. Identification
5、 codes for pair red and green. Fourth - For watertight variants, waterblocking material shall meet the requirements of 3.3.5 and 3.3.5.3 of MIL-DTL-24643. Fifth - Optional binder tape and/or binder yarn. Sixth - 24 AWG nominal tin-coated copper drain wire. Seventh - Round, tin-coated copper braid, o
6、ptimized for 01 and 02 variants. Eighth - Optional binder tape or waterblocking tape. Ninth - Polyolefin jacket, minimum thickness of 0.040 inch for the 01 and 02 variants. Cross-linked for 01 and 02 variants. Overall Diameter (OD): 0.3600.030 inch for the 01 variant, 0.3750.030 inch for the 02 vari
7、ant. (This completes the 01 and 02 variants.) AMSC N/A FSC 6145 Source: http:/ - Downloaded: 2008-02-14T01:32ZCheck the source to verify that this is the current version before use.MIL-DTL-24643/62 Construction Variant for Types LSPB2SDOS and LSPB2SDOSWTenth - For 04 variant: Waterblocking material
8、in accordance with 3.3.5 and 3.3.5.3 of MIL-DTL-24643. Eleventh - Optional binder tape or waterblocking tape. Twelfth - Round, tin-coated copper braid, optimized. Thirteenth - Optional binder tape or waterblocking tape. Fourteenth - Cross-linked polyolefin jacket, minimum wall thickness of 0.040 inc
9、h. (This completes construction of the 03 and 04 variants.) TABLE I. Details. Overall Diameter (inches) Military Part No. M24643/62 Type Number of Pairs Min. Max.-01 LSPB2SD-1 1 0.330 0.390 -02 LSPB2SDW-1 1 0.345 0.405 -03 LSPB2SDOS-1 1 0.440 0.500 -04 LSPB2SDOSW-1 1 0.450 0.530 EXAMINATION AND TEST
10、S: Basic Electricals: DC resistance (ohms/100 m, max.) 5.45 DC resistance unbalance (percent, max.) 5 Jacket flaws No Failure Conductor and shield continuity No Failure Group A: Visual and dimensional No Failure Watertightness (Types LSPB2SDW-1 & LSPB2SDOSW-1 only) No Failure Capacitance Mutual capa
11、citance of a pair (max. 1 kHz) 3.0 nf/100 m Characteristic impedance (0.2 MHz to 20 MHz) 15015 ohms TABLE II. Swept electrical parameters. Frequency (MHz) 0.2 4.0 16 100 300 Attenuation dB/100m (max) 1.0 2.5 5.0 13.5 24.0 Group B: Drip (951 C) Zero Tear (pounds per inch thickness, min.) (ASTM D470)
12、35 2 Source: http:/ - Downloaded: 2008-02-14T01:32ZCheck the source to verify that this is the current version before use.MIL-DTL-24643/62 Physicals (unaged) Insulation Tensile strength (lb/in2, min.) 1300 Elongation (percent, min.) 160 Jacket Tensile strength (lb/in2, min.) 1300 Elongation (percent
13、, min.) 160 Cross-linked proof test (percent, max.) Jacket 50 Group C: Physicals (aged air oven) Insulation (polyolefin) Tensile strength (percent of unaged, min.) 75 Elongation (percent of unaged, min.) 75 Jacket (136 C for 168 hours) Tensile strength (percent retained, min.) 60 Elongation (percent
14、 retained, min.) 60 Shrinkage No Failure Cable filler removability No Failure Heat distortion (percent of unaged, max.) 30 Conformance to material, construction and coverage No Failure Surface transfer impedance Milliohms per meter, max. 700 EMP response, dB, min. 60 Permanence of printing (jacket)
15、(cycles, min.) 125 Group D: Flame propagation (cable) No Failure Qualification Inspection: Qualification inspection shall include basic electricals, groups A, B, C and D, plus the following: Aging and compatibility (cable) (952 C) No Failure Abrasion resistance (jacket) No Failure Acid gas equivalen
16、t (percent, max.) Jacket 2 3 Source: http:/ - Downloaded: 2008-02-14T01:32ZCheck the source to verify that this is the current version before use.MIL-DTL-24643/62 Fillers 8 Insulation 18Halogen content (percent, max.) Jacket 0.2 Fillers 0.2Immersion (jacket) Tensile strength (percent of unaged, min.
17、) 50 Elongation (percent of unaged, min.) 50 Smoke index, max. Jacket 25 Fillers 45Insulation 45 Toxicity index, max. Jacket 5 Fillers 5Insulation 1.5Durometer (jacket) Type A (hardness, min.) 80 Watertightness, max. leakage (cm3) 65.5 Weathering (jacket) No Failure Custodians: Preparing Activity: A
18、rmy MI Navy SH Navy SH (Project 6145-2006-040) Review Activities: Army AR, AV, CR Navy CG, EC DLA IS NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil. 4 Source: http:/ - Downloaded: 2008-02-14T01:32ZCheck the source to verify that this is the current version before use.
