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eLibrary > BS IEC 61156-11:2023 Multicore and symmetrical pair/quad cables for digital communications - Symmetrical single pair cables with transmission characteristics up to 1,25 GHz. Horizontal floor wiring. Sectional specification >

BS IEC 61156-11:2023 Multicore and symmetrical pair/quad cables for digital communications - Symmetrical single pair cables with transmission characteristics up to 1,25 GHz. Horizontal floor wiring. Sectional specification, 2023

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BS IEC 61156-11:2023 Multicore and symmetrical pair/quad cables for digital communications - Symmetrical single pair cables with transmission characteristics up to 1,25 GHz. Horizontal floor wiring. Sectional specification, 2023

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CONTENTS
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Installation considerations [Go to Page]
4.1 General remarks
4.2 Bending radius of installed cable
4.3 Climatic conditions
5 Materials and cable construction [Go to Page]
5.1 General remarks
5.2 Cable construction
5.3 Conductor
5.4 Insulation
5.5 Cable element
5.6 Screening of the cable element
5.7 Cable make-up
5.8 Screening of the cable core
5.9 Sheath
5.10 Identification
5.11 Finished cable
6 Characteristics and requirements [Go to Page]
6.1 General remarks
6.2 Electrical characteristics and tests [Go to Page]
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 and low frequency coupling attenuation
Tables [Go to Page]
Table 1 – Transfer impedance [Go to Page]
6.2.9 Current-carrying capacity
6.3 Transmission characteristics [Go to Page]
6.3.1 Velocity of propagation (phase velocity)
6.3.2 Phase delay and differential delay (delay skew)
Table 2 – Coupling attenuation
Table 3 – Low frequency coupling attenuation [Go to Page]
6.3.3 Attenuation (α)
Table 4 – Attenuation equation constants [Go to Page]
6.3.4 Unbalance attenuation (TCL and EL TCTL)
6.3.5 Alien (exogenous) near-end crosstalk (PS ANEXT)
Table 5 – TCL requirements
Table 6 – EL TCTL requirements [Go to Page]
6.3.6 Alien (exogenous) far-end crosstalk (PS AACR-F)
6.3.7 Alien (exogenous) crosstalk of bundled cables
6.3.8 Impedance
Table 7 – PS ANEXT requirements
Table 8 – PS AACR-F requirements [Go to Page]
6.3.9 Return loss (RL)
6.4 Mechanical and dimensional characteristics and requirements [Go to Page]
6.4.1 Dimensional requirements
6.4.2 Elongation at break of the conductor
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
Table 9 – RL requirements [Go to Page]
6.4.8 Crush test of the cable
6.4.9 Impact test of the cable
6.4.10 Bending under tension
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 [Go to Page]
6.5.1 Shrinkage of the insulation
6.5.2 Wrapping test of the 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
6.5.9 Damp heat steady state
6.5.10 Solar radiation
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 method for cables in environmental air handling spaces
7 Bundled cable requirements [Go to Page]
7.1 General
7.2 Single pairs sharing one sheath [Go to Page]
7.2.1 General
7.2.2 Near-end crosstalk (NEXT)
Table 10 – NEXT and PS NEXT requirements [Go to Page]
7.2.3 Attenuation to crosstalk ratio far-end (PS ACR-F)
Table 11 – ACR-F and PS ACR-F requirements
Annex A (informative) Blank detail specification
Annex B (informative) Background information for coupling attenuation and low frequency coupling attenuation requirements
Bibliography [Go to Page]

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BS IEC 61156-11:2023 Multicore and symmetrical pair/quad cables for digital communications - Symmetrical single pair cables with transmission characteristics up to 1,25 GHz. Horizontal floor wiring. Sectional specification, 2023

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please select your company type below: