Standard: IEC 60794; VDE 0888
CONSTRUCTION:
Optical fibres:
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
Armouring, rodent protection, peripheral supporting element: 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 (UV)
APPLICATION:
These optical cables are use for outdoor application, water-resistant and resistant to UV-radiation. Glass fibers tapes provide resistance to rodent protection and additional to tensile strains, suitable for fixed laying in cable ducts, conduits or direct burial.
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
