Application
The cables are designed for use as connection between central offices. The cables are suitable for installation in ducts and aerial installation with integral suspension strand. Jelly filled option is for subscriber’s cables installed underground or along the edge of pavement. An armoured option is offered for direct burial installations.
Standards
• DIN VDE0816
Construction
Conductors
Solid annealed bare copper 0.4/0.6/0.8mm, as per class 1 of DIN VDE 0295/BS 6360/IEC 60228
Isolation
Solid polyethylene 2YI2 type as per DIN VDE 0207-2
Twisted Pairs
Insulated conductors are twisted into pairs with varying lay length to minimize crosstalk
Elément de câblage
Star Quads
Cable Core Assemblée
4 Cores are twisted into star quad. 5 star quads are stranded into a basic unit. 5 or 10 basic units each are stranded into one main unit. The star quads are grouped in units and stranded in layers to form the cable core. Standard make up is per DIN VDE 0816 in the Cable Make Up Diagram
Core Wrapping
One or more non-hygroscopic polyester tapes are helically or longitudinally laid with an overlap. These tapes furnish thermal, mechanical as well as high dielectric protection between shielding and individual conductors.
Moisture Barrier
A layer of aluminium tape (0.2mm) coated with PE-copolymer on one or both sides and applied longitudinally with overlap over the cable core to provide electrical shielding coverage and ensures a barrier against water vapor
Gaine
Black low or medium density polyethylene 2YM2 type as per DIN VDE 0207-3, being able to withstand exposure to sunlight, temperature variations, ground chemicals and other environmental contaminants
Ripcord
Ripcord may be provided for slitting the sheath longitudinally to facilitate its removal
Paires de rechange (optional)
Spare pairs may be provided for large pair cables
Fil de continuité (optional)
Tinned copper drain wire may be longitudinally laid to ensure electrical continuity of the screen
Facultatif Construction
Jelly Filled Cable
The cable core interstices are filled with petroleum jelly to avoid longitudinal water penetration within the cable. The water resistant filling compound is applied to the air space between non-hygroscopic tape and shield shield and sheath within the cable core
Armoured Cable
Corrugated steel tape armour is applied over an optional inner polyethylene sheath with an overlap. An outer polyethylene sheath is applied over the armour
Type Code
A- Outdoor Cable
2Y Polyethylene (PE) insulation
F Continuous core filling
(L)2Y Laminated sheath(copolymer-coated aluminium tape laminated to PE outer sheath)
SR Corrugated steel tape
b Armouring
T Messenger of galvanized steel wires
StIII Star quad in local cables.
Bd Unit-type stranding
Electrical Properties
Mechanical and Thermal Properties
Temperature range during operation (fixed state): -30°C – +70°C
Temperature range during installation (mobile state): -20°C – +50°C
Minimum bending radius: 10 x Overall Diameter (unarmoured cables);15 x Overall Diameter (armoured cables)
Colour Code
Quads
The single core is identified by black ring markings:
| Side Circuit 1 |
a-wire |
without marking |
| |
b-wire |
1 mark distance 17mm |
| Side Circuit 2 |
a-wire |
2 marks distance 34mm |
| |
b-wire |
2 marks distance 17mm |
Subunits
Basic colours for the wire insulation of the 5 star quads of a basic unit:
| Quad 1 Red |
Quad 2 Green |
|
| Quad 3 Grey |
Quad 4 Yellow |
Quad 5 White |
The tracer units are coded with a red helix, all other units by a white binder
Dimensions And Weight
Solid PE Insulated and LAP Sheathed Air Core Cable to DIN VDE 0816
VDE CODE: A-2Y(L)2Y…x2x0.4/0.6/0.8 StIII Bd
1 2
Solid PE Insulated & LAP Sheathed Air Core/Jelly Filled Cables to DIN VDE 0816