Thin Wall Cellular PE Insulated & PE Sheathed Air Core Cables to CW 1224

Applications

The cables are designed for local main network where it is pressurized. They are used as subscriber distribution cables and as connection between central offices. The cables are suitable for installation in ducts in access or trunk networks.

Standards

CW 1224

Construction

Telephone Cable - CW 1224 CW-1224 Thin Wall Air Core Cables - Telephone Cables
Conductors Solid annealed bare copper, 0.32/0.4/0.5/0.63/0.9mm as per class 1 of BS 6360/IEC 60228.
Insulation Cellular polyethylene as per BS EN 50290-2-23/IEC 60708/BS 6234.
Twisted Pairs Insulated conductors are twisted into pairs with varying lay length to minimize crosstalk.
Cabling Element Twisted Pairs.
Cable Core Assembly Cables with up to 100 pairs are composed of 25-pair units or 12/13-pair units; cables with over 100 pairs are composed of 25, 50 or 100-pair units cabled together. Any extra pairs form a separate unit. Units are identified by colour coded binders.
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 and applied longitudinally with overlap over the cable core to provide 100% electrical shielding coverage and ensures a barrier against water vapor.
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.
Spare Pairs (optional) Spare pairs may be incorporated for 200 and larger pair cables.
Continuity Wire (optional) One tinned copper drain wire may be longitudinally laid to ensure electrical continuity of the screen.

Electrical properties

Nominal Conductor Diameter mm 0.32 0.4 0.5 0.63 0.9
Conductor Gauge Size AWG 28 26 24 22 19
Conductor Size mm2 0.08 0.126 0.196 0.312 0.636
Maximum Average Conductor Resistance @20°C Ω/km 223 143 91 58 28
Minimum Insulation Resistance @500V DC MΩ.km 6500 6500 6500 6500 6500
Maximum Average Mutual Capacitance @800Hz* nF/km 53 53 53 56 59
Maximum Individual Mutual Capacitance @800Hz (for 99% cases) nF/km 60 60 60 60 64
Maximum Individual Capacitance Unbalance @800Hz pair-to-pair
(for 99% cases)
pF/500m 275 275 275 275 275
Maximum Conductor Loop Resistance @20°C Ω/km 470 300 192 114 60
Impedance @1KHz Ω 1000 994 796 660 445
Impedance @100KHz Ω 156 147 134 125 122
Impedance @512KHz Ω 122 120 118 117 116
Impedance @1MHz Ω 120 117 115 114 113
Maximum Average Attenuation @0.8KHz dB/km 1.76 1.64 1.30 1.04 0.74
Maximum Average Attenuation @1KHz dB/km 1.8 1.68 1.35 1.08 0.76
Maximum Average Attenuation @3KHz dB/km 3.4 3.18 2.52 2.01 1.42
Maximum Average Attenuation @150KHz dB/km 16.8 11.4 8.3 6.2 4.4
Maximum Average Attenuation @772KHz dB/km 29.5 24.3 19.4 15.4 10.8
Maximum Average Attenuation @1000KHz dB/km 33.5 27.1 21.4 17.5 12.8
Dielectric Strength Conductor to Conductor (3secs) V DC 500 500 500 500 500
Nominal Insulation Thickness mm 0.095 0.13 0.15 0.175 0.225
Nominal Insulated Conductor Diameter mm 0.51 0.66 0.8 0.98 1.35

* Mutual capacitance values may be increased by 3% for cables with a nominal number of pairs less than 400.

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

Standard colour code is per CW 1224 given in Colour Code Chart.

Dimensions and weight

Cellular PE Insulated & LAP Sheathed Air Core Cable to CW 1224

Cable Code Number of Pairs Minimum Sheath
Thickness
mm
Maximum Overall
Diameter
mm
Nominal Weight
kg/km
0.32mm Conductor, 0.51mm Insulated Wire
TP1224-02Y(L)2Y-100P032 100 1.6 16.0 266
TP1224-02Y(L)2Y-200P032 200 1.7 20.0 490
TP1224-02Y(L)2Y-300P032 300 1.7 23.5 706
TP1224-02Y(L)2Y-400P032 400 1.8 26.0 910
TP1224-02Y(L)2Y-500P032 500 1.8 28.5 1085
TP1224-02Y(L)2Y-600P032 600 1.9 31.0 1330
TP1224-02Y(L)2Y-800P032 800 1.9 34.5 1740
TP1224-02Y(L)2Y-1000P032 1000 2.0 38.0 2150
TP1224-02Y(L)2Y-1200P032 1200 2.1 41.0 2560
TP1224-02Y(L)2Y-1600P032 1600 2.2 46.5 3370
TP1224-02Y(L)2Y-2000P032 2000 2.3 51.5 4180
TP1224-02Y(L)2Y-2400P032 2400 2.4 55.5 4990
TP1224-02Y(L)2Y-3200P032 3200 2.5 63.0 6610
TP1224-02Y(L)2Y-4000P032 4000 2.7 71.0 8230
TP1224-02Y(L)2Y-4800P032 4800 2.7 76.0 9850
0.4mm Conductor, 0.66mm Insulated Wire
TP1224-02Y(L)2Y-50P04 50 1.6 15.5 220
TP1224-02Y(L)2Y-100P04 100 1.6 19.0 380
TP1224-02Y(L)2Y-200P04 200 1.7 24.5 700
TP1224-02Y(L)2Y-300P04 300 1.8 28.5 1009
TP1224-02Y(L)2Y-400P04 400 1.9 32.0 1300
TP1224-02Y(L)2Y-500P04 500 1.9 35.0 1550
TP1224-02Y(L)2Y-600P04 600 2.0 38.0 1900
TP1224-02Y(L)2Y-800P04 800 2.1 43.0 2490
TP1224-02Y(L)2Y-1000P04 1000 2.2 47.5 3075
TP1224-02Y(L)2Y-1200P04 1200 2.3 51.5 3660
TP1224-02Y(L)2Y-1400P04 1400 2.4 55.5 4235
TP1224-02Y(L)2Y-1600P04 1600 2.4 58.5 4818
TP1224-02Y(L)2Y-2000P04 2000 2.5 64.5 5980
TP1224-02Y(L)2Y-2400P04 2400 2.6 70.0 7645
TP1224-02Y(L)2Y-3000P04 3000 2.8 74.0 9466
TP1224-02Y(L)2Y-3200P04 3200 3.0 80.0 10076
0.5mm Conductor, 0.8mm Insulated Wire
TP1224-02Y(L)2Y-50P05 50 1.6 17.0 320
TP1224-02Y(L)2Y-100P05 100 1.7 22.0 540
TP1224-02Y(L)2Y-200P05 200 1.8 28.5 1000
TP1224-02Y(L)2Y-300P05 300 1.9 33.5 1500
TP1224-02Y(L)2Y-400P05 400 2.0 37.5 1944
TP1224-02Y(L)2Y-500P05 500 2.1 41.5 2577
TP1224-02Y(L)2Y-600P05 600 2.1 44.5 2800
TP1224-02Y(L)2Y-800P05 800 2.3 51.5 3743
TP1224-02Y(L)2Y-1000P05 1000 2.4 56.0 4450
TP1224-02Y(L)2Y-1200P05 1200 2.5 61.5 5460
TP1224-02Y(L)2Y-1600P05 1600 2.6 69.5 7060
TP1224-02Y(L)2Y-2000P05 2000 2.7 75.0 8660
TP1224-02Y(L)2Y-2400P05 2400 2.7 80.0 10260
0.63mm Conductor, 0.98mm Insulated Wire
TP1224-02Y(L)2Y-100P063 100 1.7 25.0 785
TP1224-02Y(L)2Y-200P063 200 1.9 33.5 1490
TP1224-02Y(L)2Y-300P063 300 2.0 39.5 2200
TP1224-02Y(L)2Y-400P063 400 2.1 44.5 2890
TP1224-02Y(L)2Y-600P063 600 2.3 53.5 4235
TP1224-02Y(L)2Y-800P063 800 2.5 61.0 5590
TP1224-02Y(L)2Y-1000P063 1000 2.6 67.5 6800
TP1224-02Y(L)2Y-1200P063 1200 2.7 73.5 8100
TP1224-02Y(L)2Y-1600P063 1600 2.7 80.0 10700
0.9mm Conductor, 1.35mm Insulated Wire
TP1224-02Y(L)2Y-50P09 50 1.7 24.5 805
TP1224-02Y(L)2Y-100P09 100 1.9 32.5 1515
TP1224-02Y(L)2Y-200P09 200 2.1 45.0 2935
TP1224-02Y(L)2Y-300P09 300 2.4 56.0 4318
TP1224-02Y(L)2Y-400P09 400 2.5 62.0 5700

*The above part number will be changed for unscreened cables by deleting the (L).

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