FinMark LTxxx-SM-28 self-supporting optical cable
FinMark LTxxx-SM-28 self-supporting optical cable
- Cable type LT
- Design self-supporting
- Application Suspension
Fiber Count of an Optical Cable
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Description
Designed for hanging on supports of communication, electric contact networks, between buildings and other objects.
Cable has 5-8 optical modules, which are wound around a central strength member. Modules may contain up to 96 optical fibers. It is a slightly modified design of cable LTxxx-SM-18.
The space between optical modules is filled with water blocking hydrophobic compound. In a cable with a small number of fibers instead of the missing optical modules are used so-called «Filling» modules. The outer sheath is made of UV-stabilized high density polyethylene. Supporting strength element is made of galvanized steel rope, diameter 3.0 mm and provides good resistance to longitudinal tensile stresses.
Optical fiber that complies with ITU-T G.652.D.
| Amount of fibers, pcs | 4 — 30 | 32— 36 | 38 — 60 | 64 — 72 | 74 — 96 | |
| Total amount of optical and filling modules, pcs | 5 | 6 | 5 | 6 | 7/8 | |
| Maximum amount of fibers in module, pcs | 6 | 12 | ||||
| Outer sheath thickness, mm* | 1.8 | |||||
| Diameter of steel supporting rope (twisted steel wires), mm | 3.0 (7×1.0 mm) | |||||
| Cable diameter X height** | 8.4×16.6 | 8.8×17.0 | 9.3×17.5 | 10.0×18.2 | 11.3×19.5 | |
| Cable weight, kg/km** | 134 | 145 | 151 | 174 | 198 | |
| Min. bending radius, const/dyn | 10/20 cable diameters | |||||
| Max. tensile force (short-term/long-term), N | 4000/2000 | |||||
| Max compressive load, (short-term/long-term), N/100mm | 1000/300 | |||||
| Max sag length, m | 150 | 140 | 120 | 100 | 80 | |
| Allowable temperature, °C | operating | -40 — +60 | ||||
| storage | -50 — +70 | |||||
| installation | -20 — +50 | |||||
(*) — allowable deviation +/- 0.2 mm
(**) – average