
Standards
The document specifies the construction standards for telecommunication cables, specifically BT CW 1171 and BT CW 1179.
Description and Application
The cables are unfilled solid polyethylene insulated unit twin cables, ranging from 50 to 2400 pairs, with copper conductors of diameters 0.4, 0.5, 0.63, and 0.9 mm. They feature solid PE insulation, twisted into pairs, and stranded into units of 25 pairs with a moisture barrier sheath. These cables are primarily used on the "E" side (central) of the network access as terminal cables in PCPs and MDFs. They are unfilled and capable of being pressurized.
Construction
- Conductors: Annealed copper with nominal diameters of 0.40, 0.50, 0.63, and 0.90 mm.
- Insulation: Solid polyethylene.
- Cabling elements: Pairs, stranded into units of 25 pairs. Cables with more than 400 pairs use double or quadruple units of 50 or 100 pairs.
- Core wrapping: Paper tape, longitudinally applied with overlap.
- Cable screen: Polyethylene coated aluminum tape, longitudinally applied with overlap and bonded to the outer PE sheath.
- Sheath: UV resistant black polyethylene.
- Sheath marking: Marked in white ink with manufacturer name, year, length marks, and other customer-specific marks.
Electrical Characteristics (at 20ºC)
- Conductor Resistance (Ω/km): Varies by diameter, with average and 99% values provided.
- Minimum insulation resistance: 6500 MΩxkm at 20ºC, 500 V.
- Mutual capacitance (nF/km, 800 Hz): Average and 99% values provided.
- Capacitance unbalance (pF/500m, 800 Hz): Pair-pair 99% value is 275.
Mechanical Characteristics
- Temperature range: -25ºC to +75ºC.
- Bending radius: 12 times the cable radius.
Dimensions and Weights
The document provides detailed tables listing the code numbers, number of pairs, cable diameters, approximate weights, lengths, and drum types for cables with diameters of 0.4 mm, 0.5 mm, 0.63 mm, and 0.9 mm.
DESCRIPTION AND APPLICATION Unfilled solid polyethylene insulated unit twin cable, from 50 to 2400 pairs, with copper conductors of diameters 0.4, 0.5, 0.63 and 0.9 mm. Solid PE insulation, twisted into pairs and stranded into units of 25 pairs with moisture barrier sheath. They are used basically on the "E" side (central) of the network access as terminal cable in the PCP's and MDF's. The cable is unfilled and is capable of being pressurized. CONSTRUCTION • Conductors: Annealed copper, 0.40, 0.50, 0.63 and 0.90 mm nominal diameters. • Insulation: Solid polyethylene. • Cabling elements: Pairs. • Lay-up. Stranding into units of 25 pairs. Cables with more than 400 pairs use double or quadruple units of 50 or 100 pairs. • Core wrapping. Paper tape, longitudinally applied with overlap. • Cable screen. Polyethylene coated aluminium tape, longitudinally applied with overlap and bonded to the outer PE sheath. • Sheath: UV resistant black polyethylene. • Sheath marking : The outer sheath shall be marked in white ink, at regular intervals, with the following information: o Name of manufacturer/ Year/ Length marks o Other type of marks according to the costumer Conductor Resistance (Q/km) • Average 143 91 58 28 Minimum insulation resistance (MQxkm, 20°C, 500 V) 6500 Mutual capacitance (nF/km, 800 Hz) • Average • 99 % of values_ Capacitance unbalance (pF/500m, 800 Hz) _Pair-pair 99 %_275 All drawings, designs, specifications and particulars of weights, dimensions, etc. in this documentation are only indicative and must not be considered contractual. Cables de Comunicaciones Zaragoza, SL. Poligono de Malpica, calle D, n° 83. 50016 Zaragoza - Espafia +34 976 729 900 | +34 976 729 974 www.cablescom.com | [email protected] Certified Company ISO 9001 - ISO 14001
Open the catalog to page 1MECHANICAL CHARACTERISTICS Temperature range: from -25° C to +75° C Bending radius: 12 x Rcabie Aprox. Weight (kg/km) Length Drum Aprox. Weight (kg/km) Length Drum All drawings, designs, specifications and particulars of weights, dimensions, etc. in this documentation are only indicative and must not be considered contractual. Cables de Comunicaciones Zaragoza, SL. Poh'gono de Malpica, calle D, n° 83. 50016 Zaragoza - Espana Certified Company ISO 9001 - ISO 14001 ZARAGOZA Page.2/2
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