BS IEC 61156-9:2016
$102.76
Multicore and symmetrical pair/quad cables for digital communications – Cables for channels with transmission characteristics up to 2 GHz. Sectional specification
Published By | Publication Date | Number of Pages |
BSI | 2016 | 22 |
This part of IEC 61156 describes cables primarily intended for the fixed part of channels as defined in ISO/IEC 11801 and in ISO/IEC TR 11801‑9901 which is planned to be included in the next edition of ISO/IEC 11801‑1 . It covers overall screened cables with screened (X/FTP) or unscreened (X/UTP) pairs, where X stands for F, S or SF, as well as pair-screened cables without overall screen (U/FTP). The transmission characteristics of these cables are specified up to a frequency of 2 000 MHz and at a temperature of 20 °C. Two categories of cables are recognised:
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Category 8.1 for use in Class I according to ISO/IEC TR 11801‑9901 ;
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Category 8.2 for use in Class II according to ISO/IEC TR 11801‑9901 .
These cables are intended to be used for communication channels which use at least four pairs simultaneously.
The cables covered by this International Standard are intended to operate with voltages and currents normally encountered in communication systems. While these cables are not intended to be used in conjunction with low impedance sources, e.g. the electric power supplies of public utility mains, they are intended to be used to support the delivery of low voltage remote powering applications such as IEEE 802.3af (Power over Ethernet) or further developments e.g. according to IEEE 802.3at or IEEE 802.3bt. More information on the capacity to support these applications according to the installation practices is given in IEC PAS 61156‑1‑4 , IEC TR 61156‑1‑6 and ISO/IEC TR 29125 .
PDF Catalog
PDF Pages | PDF Title |
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4 | CONTENTS |
6 | FOREWORD |
8 | 1 Scope 2 Normative references |
9 | 3 Terms and definitions 4 Installation considerations 5 Materials and cable construction 6 Characteristics and requirements 6.1 General remarks |
10 | 6.2 Electrical characteristics and tests 6.2.1 Conductor resistance 6.2.2 Resistance unbalance 6.2.3 Dielectric strength 6.2.4 Insulation resistance 6.2.5 Mutual capacitance 6.2.6 Capacitance unbalance 6.2.7 Transfer impedance 6.2.8 Coupling attenuation |
11 | 6.2.9 Current-carrying capacity 6.3 Transmission characteristics 6.3.1 Velocity of propagation (phase velocity) 6.3.2 Phase delay and differential delay (delay skew) 6.3.3 Attenuation (α) Tables Table 1 – Coupling attenuation |
12 | 6.3.4 Unbalance attenuation (TCL) 6.3.5 Near-end crosstalk (NEXT) Table 2 – Attenuation equation constants Table 3 – TCL requirements Table 4 – ELTCTL requirements |
13 | 6.3.6 Far-end crosstalk (ACR-F) 6.3.7 Alien (exogenous) near-end crosstalk (ANEXT) Table 5 – NEXT and PS NEXT requirements Table 6 – ACR-F and PS ACR-F requirements Table 7 – PS ANEXT requirements |
14 | 6.3.8 Alien (exogenous) far-end crosstalk (AFEXT) 6.3.9 Alien (exogenous) crosstalk of bundled cables 6.3.10 Impedance 6.3.11 Return loss (RL) Table 8 – PS AACR-F requirements Table 9 – RL requirements |
15 | 6.4 Mechanical and dimensional characteristics and requirements 6.4.1 Dimensional requirements 6.4.2 Elongation at break of the conductors 6.4.3 Tensile strength of the insulation 6.4.4 Elongation at break of the insulation 6.4.5 Adhesion of the insulation to the conductor 6.4.6 Elongation at break of the sheath 6.4.7 Tensile strength of the sheath 6.4.8 Crush test of the cable 6.4.9 Impact test of the cable 6.4.10 Bending under tension |
16 | 6.4.11 Repeated bending of the cable 6.4.12 Tensile performance of the cable 6.4.13 Shock-test requirements of the cable 6.4.14 Bump-test requirements of the cable 6.4.15 Vibration-test requirements of a cable 6.5 Environmental characteristics 6.5.1 Shrinkage of insulation 6.5.2 Wrapping test of insulation after thermal ageing 6.5.3 Bending test of insulation at low temperature 6.5.4 Elongation at break of the sheath after ageing 6.5.5 Tensile strength of the sheath after ageing 6.5.6 Sheath pressure test at high temperature 6.5.7 Cold bend test of the cable 6.5.8 Heat shock test |
17 | 6.5.9 Damp heat steady state 6.5.10 Solar radiation (UV test) 6.5.11 Solvents and contaminating fluids 6.5.12 Salt mist and sulphur dioxide 6.5.13 Water immersion 6.5.14 Hygroscopicity 6.5.15 Wicking 6.5.16 Flame propagation characteristics of a single cable 6.5.17 Flame propagation characteristics of bunched cables 6.5.18 Halogen gas evolution 6.5.19 Smoke generation 6.5.20 Toxic gas emission 6.5.21 Integrated fire test |
18 | 7 Bundled cables requirements 8 Introduction to the blank detail specification |
19 | Bibliography |