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BlownIn is a multitube design that can have up to 432 fibers. It is an all-dielectric and UV-resistant micro air blown cable suitable for indoor and outdoor cable conduits and trays. These cables typically consist of a stranded core with central strength element (FRP), gel-filled loose tubes with optical fibers and PBT fillers (where applicable). The stranded core is fixed by water-swellable yarns. Operation tension can reach up to 225 lb (1 kN) and installation tension can be up to 674 lb (3 kN). It also has a wide range of operating temperatures from -40°F to +158°F and installation temperatures from -22°F to +122°F.
BlownIn cables can be manufactured in several options:
Option PE 250
250 μm fiber
HDPE outer jacket
Option PA 250
250 μm fiber
PA outer jacket
Option PA 200
200 μm fiber
PA outer jacket
Option PA 200 Reduced
200 μm fiber
PA outer jacket
Decreased design (up to 48 optical fibers)
Different designs comparison:
250 μm fiber and HDPE outer jacket: 5.6 – 11.2 mm
250 μm fiber and PA outer jacket: 5.1 – 10.7 mm
200 μm fiber and PA outer jacket: 4.5 – 9.3 mm
200 μm fiber and PA outer jacket (decreased design (up to 48 OF)): 3.6 mm
250 μm fiber:
Price — lower
Standard diameter of 12 OF loose tube, mm — 1.4
Application — simple tasks, when there is no strict diameter limit
200 μm fiber:
Price — higher
Standard diameter of 12 OF loose tube, mm — 1.2
Application — strict diameter limit, cable with 250 μm OF doesn’t fit
| PE (polyethylene) | ||||||
| Fiber type | G.652D + G.657.A1 (250 μm) | |||||
| Fiber count, up to | 72 | 96 | 144 | 192 | 288 | 432 |
| Number of loose tubes | 6 | 8 | 12 | 16 | 24 | 36 |
| Number of fillers | – | – | – | 2 | – | – |
| Fibers per loose tube | 12 | |||||
| Cable diameter, in | 0.22 | 0.248 | 0.331 | 0.331 | 0.374 | 0.441 |
| Cable weight, lb/ft | 0.014 | 0.019 | 0.035 | 0.027 | 0.036 | 0.045 |
| Operation tension, lb | 67 | 112 | 202 | 124 | 146 | 225 |
| Installation tension, lb | 225 | 405 | 629 | 360 | 427 | 674 |
Option PA 250
| PA (polyamide) | ||||||
| Fiber type | G.652D + G.657.A1 (250 μm) | |||||
| Fiber count, up to | 72 | 96 | 144 | 192 | 288 | 432 |
| Number of loose tubes | 6 | 8 | 12 | 16 | 24 | 36 |
| Number of fillers | – | – | – | 2 | – | – |
| Fibers per loose tube | 12 | |||||
| Cable diameter, in | 0.201 | 0.232 | 0.311 | 0.311 |
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