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telephone cable


Specifications

Multipair cables
BC/PE / LAP /FIG.8/PE  10/20pairs0.5mm
 
Cable Construction
1.   Conductor                  : 99.9% pure annealed copper
 Diameter of wire            : 0.50mm 
Tolerance                  : ± 0.01 mm 
2.  Insulation                    : PE 
  Diameter of Insulation        : 0.90mm 
Tolerance                   : ± 0.02 mm 
Nominal thickness            : 0.2mm
3   Twisting pair                 : 2 x Insulated wire 
Pair No Color of insulation
a-wire b-wire
1 white blue
2 white orange
3 white green
4 white brown
5 white gray
6 red blue
7 red orange
8 red green
9 red brown
10 red gray
4 Cable Make-up               :10 Pairs shall be form a sub-unit。
:20 Pairs shall be form a 5 pairs-units . (4x5p The  binder color of the sub-units ,in turn,is a blue 、blue 、orange、orange.)
5. Core Wrapping              : The cable core shall be wrapped with a continuous protective layer of one or two tapes, lapped helically or laid longitudinally.
6. Rip Cord                    : Nylon Yarn 
7. spare pairs:                : NO
8.  Identification            : Placed between the cable core and PET tape with a Identification
9. Water Resistant Compound   : NO
10. Moisture Barrier             : Longitudinally Overlapped Laminated Aluminum Tape 
Nominal Thickness of AL      : 0.15±0.015 mm 
The plastic layer              :One side with plastic coated 
Nominal Thickness of Plastic   :0.05±0.01mm
11. Drain wire                  :NO
12 Self-Support Cables: 7-strand galvanized steel strand is used as support wire. Black polyethylene sheath covers both core and support wire in a figure-8 construction. 
Cable size galvanized steel strand Nominal SIZE(mm) Nominal Thickness(mm) Outer Diameter   (Approx.) (mm)
10x2x0.5mm 1*7-4.5 1.4 7.3
20x2x0.5mm 1*7-4.5 1.4 7.3
13 the web: The height of the web shall 3.0±0.5mm。
The thickness of the web shall be2.2±0.5mm for cables.
14 Outer Sheath                : LDPE (Black Color) 
Cable size Nominal Thickness(mm) Min. Thickness at any point(mm) Outer Diameter   (Approx.)CXH (mm)
10x2x0.5mm 1.6 1.40 10.7 *21.0
20x2x0.5mm 1.6 1.40 13.0*23.0
15. Sheath Marking : According to the customer request
16. Packing and Weight :
Cable size Drum material Drum length Wooden drum size Net. Weigh t
Kg/drum(Approx.) Gross.Weight
 Kg/drum(Approx.)
10x2x0.5mm Wood drum 1 800*400*400 240 290
20x2x0.5mm 1 800*400*400 300 370
 
 
 
 
 
Electrical Characteristic 
1 Max. Conductor Resistance at 20°C            : 91 Ω/km 
2 Resistance Unbalance 
- Max. Average          : 5% 
3 Dielectric Strength - Core to core               : 2.0 kV DC/3sec. 
                   - Core to screen             :6.0 kV DC/3sec. 
4 Max. Avg. Mutual Capacitance at 1000±100Hz   : 52 ± 3 nF/km 
5 Capacitance unbalance at 1000±100kHz 
- Pair to pair : - Max. RMS                       : 90 pF/km 
              Max. Average RMS               :20 pF/km
6.Average attenuation measured at 150 kHz        :8.5dB/km
7 Min. Insulation Resistance at 20 ºC              : 10000 MΩ·km 
 
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                           : 15 x Overall Diameter 
 

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