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Telephone Cables |  |
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Solid PE Insulated & PE Sheathed Jelly Filled Cables to CW 1326& CW 1326/1179
Application
The cables are designed for use as subscriber distribution cables and as connection between central offices in
local access networks. The cables are jelly filled and suitable for installation in ducts. The cables are also
available for direct burial in the ground and aerial installation with integral suspension strand. An armoured
option is offered for direct burial installations. A figure-8 self support option is offered for aerial installation.
Standards
CW 1326 (For unscreened cable)
CW 1179 (For screened cable)
CW 1252 (For self-supporting cable)
Construction
Conductors: Solid annealed bare copper, 0.5mm as per class 1 of BS 6360/IEC 60228
Insulation: Solid polyethylene as per BS EN 50290-2-23/BS 6234/IEC 60708
TwistedPairs: Insulated conductors are twisted into pairs with varying lay length to minimize crosstalk
CablingElement: Twisted Pairs
CableCore Assembly: Cables are composed of 10-pair units
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 (optional): A layer of aluminium tape (0.15mm) coated with PE-copolymer on one or both
sides is applied longitudinally with overlap over the cable core to provide shielding coverage and ensure a
barrier against water vapor
Filling: 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
Sheath: Black low density polyethylene as per BS 6234/IEC 60708, 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
SparePairs (optional): Spare pairs may be incorporated for 200 and larger pair cables
Continuity Wire (optional): Tinned copper drain wire may be longitudinally laid to ensure electrical continuity of
the screen
Electrical Properties
| Nominal Conductor Diameter | mm | 0.5 |
|---|---|---|
| Conductor Gauge Size | AWG | 24 |
| Conductor Size | mm2 | 0.196 |
| Maximum Average Conductor Resistance @20°C | Ω/km | 91 |
| Minimum Insulation Resistance @500V DC | MΩ.km | 1500 |
| Maximum Average Mutual Capacitance @800Hz* | nF/km | 56 |
| Maximum Individual Mutual Capacitance @800Hz (for 99% cases) | nF/km | 64 |
| Maximum Individual Capacitance Unbalance @800Hz pair-to-pair | pF/500m | 275 |
| Maximum Conductor Loop Resistance @20°C | Ω/km | 192 |
| Impedance @1KHz | Ω | 796 |
| Impedance @100KHz | Ω | 134 |
| Impedance @512KHz | Ω | 118 |
| Impedance @1MHz | Ω | 115 |
| Maximum Average Attenuation @0.8KHz | dB/km | 1.30 |
| Maximum Average Attenuation @1KHz | dB/km | 1.35 |
| Maximum Average Attenuation @3KHz | dB/km | 2.52 |
| Maximum Average Attenuation @150KHz | dB/km | 8.3 |
| Maximum Average Attenuation @772KHz | dB/km | 19.4 |
| Maximum Average Attenuation @1000KHz | dB/km | 21.4 |
| Dielectric Strength Conductor to Conductor (3secs) | V DC | 500 |
| Nominal Insulation Thickness | mm | 0.275 |
| Nominal Insulated Conductor Diameter | mm | 1.05 |
*For screened cables of 20 pairs or less, the maximum average mutual capacitance shall not apply and the
maximum for 99% of cases shall be increased by 3nF
Mechanical and Thermal Properties
Temperature range during operation (fixed state): -30°C – +70°C
Temperaturerange during installation (mobile state): -20°C – +50°C
Minimumbending radius: 10 x Overall Diameter (unarmoured cables);15 x Overall Diameter (armoured cables)
Colour Code
Standard colour code is per CW 1326 given in the following Colour Code Chart
| Cabling Element No. | a-wire | b-wire | Cabling Element No. | a-wire | b-wire |
|---|---|---|---|---|---|
| 1 | WHITE | BLUE | 6 | RED | BLUE |
| 2 | WHITE | ORANGE | 7 | RED | ORANGE |
| 3 | WHITE | GREEN | 8 | RED | GREEN |
| 4 | WHITE | BROWN | 9 | RED | BROWN |
| 5 | WHITE | GREY | 10 | RED | GREY |
Units binders
| No. of Units | Binder Colour | No. of Units | Binder Colour |
|---|---|---|---|
| 1 | BLUE | 6 | WHITE |
| 2 | ORANGE | 7 | RED |
| 3 | GREEN | 8 | BLACK |
| 4 | BROWN | 9 | YELLOW |
| 5 | GREY | 10 | VIOLET |
Dimensions And Weight
Solid PE Insulated and Unscreened/Screened PE Sheathed Jelly Filled Cable to CW 1326, CW 1326/1179
| Cable Code | Number of Pairs | Minimum
Sheath Thickness mm |
MaximumOverall Diameter mm (Unscreened) |
Nominal
Weight kg/km (Unscreened) |
Maximum Overall Diameter mm (Screened) | Nominal Weight kg/km (Screened) |
|---|---|---|---|---|---|---|
| 0.5mm Conductor, 1.05mm Insulated Wire | ||||||
| TP1326-2YF(L)2Y-2P05 | 2 | 1.1 | 8.5 | 55 | 10.0 | 65 |
| TP1326-2YF(L)2Y-5P05 | 5 | 1.2 | 8.5 | 77 | 10.0 | 87 |
| TP1326-2YF(L)2Y-10P05 | 10 | 1.2 | 12.0 | 126 | 13.5 | 137 |
| TP1326-2YF(L)2Y-20P05 | 20 | 1.3 | 15.0 | 221 | 16.5 | 231 |
| TP1326-2YF(L)2Y-30P05 | 30 | 1.4 | 18.0 | 332 | 19.5 | 347 |
| TP1326-2YF(L)2Y-50P05 | 50 | 1.4 | 19.5 | 483 | 21.0 | 504 |
| TP1326-2YF(L)2Y-100P05 | 100 | 1.5 | 25.0 | 933 | 26.5 | 956 |
*The above part number will be changed for unscreened cables by deleting the (L).
Solid PE Insulated, PE Inner Sheathed, Steel Wire Armoured and PE Outer Sheathed Jelly Filled Cable to CW 1326/1198 (Unscreened)
| Cable Code | Number of Pairs |
Minimum Bedding Thickness mm |
Steel Wire
Diameter mm |
Minimum
Sheath Thickness mm |
Maximum Overall
Diameter mm |
Nominal Weight kg/km |
|---|---|---|---|---|---|---|
| 0.5mm Conductor, 1.05mm Insulated Wire | ||||||
| TP1326-2YF2Y(SWA)2Y-2P05 | 2 | 1.1 | 0.9 | 0.9 | 13.7 | 241 |
| TP1326-2YF2Y(SWA)2Y-5P05 | 5 | 1.2 | 0.9 | 0.9 | 13.7 | 274 |
| TP1326-2YF2Y(SWA)2Y-10P05 | 10 | 1.2 | 0.9 | 0.9 | 17.2 | 351 |
| TP1326-2YF2Y(SWA)2Y-20P05 | 20 | 1.3 | 1.25 | 0.9 | 20.9 | 499 |
| TP1326-2YF2Y(SWA)2Y-30P05 | 30 | 1.4 | 2.0 | 1.0 | 24.8 | 749 |
| TP1326-2YF2Y(SWA)2Y-50P05 | 50 | 1.4 | 2.0 | 1.0 | 26.3 | 1123 |
| TP1326-2YF2Y(SWA)2Y-100P05 | 100 | 1.5 | 2.0 | 1.1 | 32.0 | 1763 |
Solid PE Insulated, PE Inner Sheathed, Steel Wire Armoured and PE Outer Sheathed Jelly Filled Cable to CW 1326 /1179/1198 (Screened)
| Cable Code | Number of Pairs |
Minimum Bedding Thickness mm |
Steel Wire Diameter mm |
Minimum
Sheath Thickness mm |
Maximum Overall
Diameter mm |
Nominal
Weight kg/km |
|---|---|---|---|---|---|---|
| 0.5mm Conductor, 1.05mm Insulated Wire | ||||||
| TP1326-2YF(L)2Y(SWA)2Y-2P05 | 2 | 1.1 | 0.9 | 0.9 | 15.2 | 251 |
| TP1326-2YF(L)2Y(SWA)2Y-5P05 | 5 | 1.2 | 0.9 | 0.9 | 15.2 | 286 |
| TP1326-2YF(L)2Y(SWA)2Y-10P05 | 10 | 1.2 | 1.25 | 0.9 | 19.4 | 363 |
| TP1326-2YF(L)2Y(SWA)2Y-20P05 | 20 | 1.3 | 2.0 | 1.0 | 23.3 | 501 |
| TP1326-2YF(L)2Y(SWA)2Y-30P05 | 30 | 1.4 | 2.0 | 1.0 | 26.3 | 752 |
| TP1326-2YF(L)2Y(SWA)2Y-50P05 | 50 | 1.4 | 2.0 | 1.1 | 28.0 | 1139 |