LS2SU
LS2SU is a MIL-SPEC wire and cable (US military) cable designation: LS = LS: low smoke, halogen-free shipboard cable (MIL-DTL-24643); U = U: unarmoured; the armoured type of the same sheet ends in A (LSDSGA, LSTSGA, LS6SGA); LS2SU = LS2SU: MIL-DTL-24643/31 low smoke shipboard cable of individually shielded pairs, unarmoured, 600 V. 600 V, non-watertight, non-flexing (distributor sheets). MIL-DTL-24643/31 (MIL-DTL-24643C).
1 coding system recognises this code
MIL-SPEC wire and cable (US military)
| Symbol | Meaning |
|---|---|
LS | LS: low smoke, halogen-free shipboard cable (MIL-DTL-24643) |
U | U: unarmoured; the armoured type of the same sheet ends in A (LSDSGA, LSTSGA, LS6SGA) |
LS2SU | LS2SU: MIL-DTL-24643/31 low smoke shipboard cable of individually shielded pairs, unarmoured, 600 V. 600 V, non-watertight, non-flexing (distributor sheets). MIL-DTL-24643/31 (MIL-DTL-24643C) |
What is LS2SU cable?
LS2SU: MIL-DTL-24643/31 low smoke shipboard cable of individually shielded pairs, unarmoured, 600 V. Rating: 600 V, non-watertight, non-flexing (distributor sheets). Standard: MIL-DTL-24643/31 (MIL-DTL-24643C).
MIL-DTL-24643C Table VII (standard) lists LS2SU-3 and LS2SU-10 in qualification group 10. AWC's M24643/31 page (LS2SU, LS2SA, LS2SUS; distributor, read through a search extract): paired stranded bare copper conductors, XLPE insulation, each pair shielded, LSZH cross-linked polyolefin jacket, 600 V; IEWC's sheet excerpt gives a conductor-to-shield withstand of 2000 V rms. The 2 and the S are not explained in any source read; the shield form is not given (drawn as a tape).
Documents and pages the readings were taken from
MIL-SPEC wire and cable (US military): how to read the cable type names
Fire behaviour (EU CPR)
Halogen-free compound (LS). Under the CPR this shows in the additional classes: acidity a1 to a3 (EN 60754-2) and smoke s1 to s3 (EN 50399; s1a and s1b add the 3 m cube test EN 61034-2). The main class, Aca to Fca, depends on the whole construction.
Typically targeted, as declared by makers for this kind of construction in the examples this site checked (not the class of this cable):
B2ca-s1a,d0,a11-CXKH-R-J, Kablo VrchlabíCca-s1b,d1,a1FG16(O)M16, Nexans (La Triveneta Cavi)B2ca-s1a,d1,a1FG18(O)M16, Nexans (La Triveneta Cavi)DcaFXQJ, Nexans NorwayCca-s1b,d1,a1H07Z1-K, Nexans SpainB2ca-s1,d2,a1AXQJ-RMF, Prysmian Sweden (12/20 kV)B2ca-s1a,d1,a1RZ1-K (AS), Top CableCca-s1b,d1,a1RZ1FZ1-K (AS), Top Cable
Listed as sources, alphabetically by maker. No maker pays to appear here.
Low-smoke compound (LS2SU). Smoke is graded s1 to s3 on the EN 50399 ladder; s1a and s1b add the 3 m cube test EN 61034-2.
A CPR class is declared by the maker in its Declaration of Performance and printed on the sheath (EN 50575 cl 7). This decoder does not assign one. What the CPR classes mean →
Sources: EN 13501-6 draft and FprEN 50575:2014 final draft (drafts, not the published texts); IEC 60332-3-24:2000+A1:2008; EN 13501-3 draft A2.
Work with LS2SU
Who makes or stocks this cable?
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