Standard: IEC 60794; VDE 0888
CONSTRUCTION:
Optical fibers:
SM – single mode optical fibers (9/125 µm)
(G.652D, G.655, G.657A1/A2)
MM – multi mode optical fibers (50/125 or 62,5/125 µm)
according to ITU-T Recommendation
Material of fibers:
a) core – Silicon glass: (SiO2) doped with Germanium Dioxide (GeO2);
b) cladding: Silicon glass (SiO2)
c) primary protection: Dual layer of UV-cured acrylate resin
Secondary protection of fibers: Filled loose polymer tube of PBT elastomer, filled with tixotropic jelly mass, loose laid fibers within tube – SZ stranded
Tube material: Polyester PBT-Polybutylene Terephtalate
Fibers and tubes designation: IEC 60304, TIA/EIA-598;
DIN VDE 0888
Central supporting element:
FRP – Fiberglass Reinforced Plastic (Glass roving (thread) reinforced with thermoplastic resin)
Sheath of central element: PE (or without sheath)
Around/along central strength member – glass yarns doped swellable powder (Glass rowing)
Cable core:
Concentrically stranded: around central supporting element are stranded loose tubes and cords, if necessary, in layers
Watertight element: Cable core is jelly filled.
Thixotropic gel is used as water protection.
Belt insulation: one or more paper tapes, helicoidally or longitudinally wrapped.
Peripheral supporting elements: Aramid fibers
(can be doped with swellable powder are used as additional water and mechanical protection).
Armouring, rodent protection: Glass fiber tapes adapted against the rodent and swellable powder provide mechanical protection as well as protection against rodents and additional water penetration.
Sheath ripcord: one or more ripcord placed under outer sheath
Sheath: HDPE – high density polyethylene, black colour
APPLICATION:
These optical cables are use for outdoor application, water-resistant and resistant to UV-radiation. Aramid fibers provide resistance to tensile strains, suitable for fixed laying in cable ducts, conduits or direct burial. Glass fiber tapes provide rodent protection and additional mechanical protection.
The permissible temperature range:
– during installation: from -30°C to +60°C
– during operation: from -30°C to +70°C
– during storage and transport: -40°C to +70°C
Min. permissible bending radius:
– Operation: 20D
– Fixed: 15 D (D – diameter of cable)
Tensile strength, max. (kN): On customer’s request
