Copper Underground Drop Wire 1 Pair Telephone Cable

Product Description

Telephone cable
Solid PE Insulated & PE Sheathed Air Core Cables to CW 1171

Application
The cables are designed for use as subscriber distribution cables and as connection between central offices in local access networks. The cables are unfilled and capable of being pressurized when installed. The cables are suitable for installation in ducts.
Standards

• CW 1171 (For unscreened cable)
• CW 1179 (For screened cable)
• CW 1252 (For self-supporting cable)
Construction
Conductors: Solid annealed bare copper, 0.32/0.4/0.5/0.63/0.9mm as per BS 6360/IEC 60228 Class 1
Insulation: Solid polyethylene as per BS EN 50290-2-23/BS 6234/IEC 60708
Twisted Pairs: Insulated conductors are twisted into pairs with varying lay length to minimize crosstalk.
Cabling Element: Twisted Pairs
Cable Core Assembly: Cables with 100 pairs or less 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. Standard construction is per CW 1171 given in Cable Make Up Chart
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
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): Tinned copper drain wire may be longitudinally laid to ensure electrical continuity of the screen
Electrical & Mechanical 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	/km	223	143	91	58	28
Minimum Insulation Resistance @500V DC	M.km	6500	6500	6500	6500	6500
Maximum Average Mutual Capacitance @800Hz	nF/km	53/68*	53	53	56	59
Maximum Individual Mutual Capacitance @800Hz (for 99% cases)	nF/km	60/75*	60	60	60	64
Maximum Individual Capacitance Unbalance @800Hz pair-to-pair	pF/500m	275	275	275	275	275
Maximum Conductor Loop Resistance @20°C	/km	470	300	192	114	60
Impedance @1KHz		1000	994	796	660	445
Impedance @100KHz		156	147	134	125	122
Impedance @512KHz		122	120	118	117	116
Impedance @1MHz		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	0.145/0.08**	0.175	0.20	0.26	0.3
Nominal Insulated Conductor Diameter	mm	0.61/0.48**	0.75	0.90	1.15	1.5

* Mutual capacitance values may be increased by 3% for cables with a nominal number of pairs less than 400.
The values apply to 4000 and 4800 pairs 0.32mm cable only.
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 1171 given in Colour Code Chart
Dimensions And Weight Solid PE Insulated & PE Sheathed Air Core Cables to CW 1171
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1.6years manufactory experience
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4.Strict quality control
5.Strictly conform to CE,ROHS,Iso9001
6.Quick delivery time(20ft,25days)
Contact:
Name: Carey zhu
Website: http://kuayuecable.en.made-in-china.com