MOQ | 50 Roll |
Port | Ningbo |
Lead Time | 7 |
Fig8 Drop wire Adsl telephone cable
Application
The cables are designed for use as connection between central
offices. The cables are suitable for installation in ducts,
direct burial in the ground and also for 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. A figure-8 self support option is offered for
aerial installation.
Standards
• DIN VDE 0816
Construction
Conductors
Solid annealed bare copper 0.4/0.6/0.8mm, as per class 1 of DIN
VDE 0295/ BS 6360/IEC 60228
Insulation
Cellular polyethylene 2YI2 type as per VDE
0207-2
Twisted Pairs
Insulated conductors are twisted into pairs with varying lay
length to minimize crosstalk
Cabling Element
Star Quads
Cable Core Assembly
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 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 is applied longitudinally with overlap over the
cable core to provide 100% electrical shielding coverage and
ensures a barrier against water vapor
Sheath
Black low or medium density polyethylene 2YM2 type as per 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
Spare Pairs (optional)
Spare pairs may be provided for large pair
cables
Continuity Wire (optional)
Tinned copper drain wire may be longitudinally laid to ensure
electrical continuity of the screen
Optional 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 |
02Y | Cellular Polyethylene (FOAM 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
Nominal Conductor Diameter | mm | 0.4 | 0.6 | 0.8 |
Conductor Gauge Size | AWG | 26 | - | 20 |
Conductor Size | mm2 | 0.126 | 0.283 | 0.5 |
Maximum Average Conductor Resistance @20°C | /km | 143 | 63 | 34.6 |
Minimum Insulation Resistance @500V DC | M.km | 5000 | 5000 | 5000 |
Maximum Mutual Capacitance @800Hz 95% of all values | nF/km | 40 | 40 | 40 |
100% of all values | nF/km | 42 | 42 | 42 |
Capacitance Unbalance @800Hz pair-to-pair | ||||
K1 100% of values max | pF/500m | 980 | 800 | 800 |
98% of values max | pF/500m | 420 | 400 | 400 |
K9-12 100% of values max | pF/500m | 800 | 300 | 300 |
90% of values max | pF/500m | 200 | 100 | 100 |
Maximum Conductor Loop Resistance @20°C | /km | 300 | 130 | 73.2 |
Impedance @0.8KHz | 994 | 665 | 500 | |
Maximum Average Attenuation @0.8KHz | dB/km | 1.45 | 0.91 | 0.68 |
Dielectric Strength 50Hz | ||||
Conductor to Conductor (2mins) | V AC | 500 | 500 | 500 |
Conductor to Screen (2mins) | V AC | 2000 | 2000 | 2000 |
Maximum Operating Voltage Peak Value | V | 150 | 225 | 225 |
Nominal Insulation Thickness (Air Core) | mm | 0.20 | 0.25 | 0.3 |
(Jelly Filled) | mm | 0.26 | 0.36 | 0.44 |
Nominal Insulated Conductor Diameter (Air Core) | mm | 0.8 | 1.1 | 1.4 |
(Jelly Filled) | mm | 0.92 | 1.32 | 1.68 |