EN 50288-2-1 is a sectional specification for screened cables, characterised from 1 MHz up to 100 MHz, to be used in horizontal and building backbone wiring as defined in EN 50173.<\/p>\n
This sectional specification contains the electrical, mechanical, transmission and environmental performance characteristics of the cables, when tested in accordance with the referenced test methods.<\/p>\n
This sectional specification is to be read in conjunction with EN 50288-1, which contains the essential provisions for its application.<\/p>\n
The cables covered in this sectional specification are intended to operate with voltages and currents normally encountered in communication systems. These cables are not intended to be used in conjunction with low impedance sources, for example, the electric power supplies of public utility mains.<\/p>\n
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| 6<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions, symbols and abbreviations 3.1 Terms and definitions For the purposes of this document the terms and definitions given in EN 50288-1 and the following apply. 3.1.1 screening of cable a cable is considered screened when the cable core is covered by a continuous conductive layer forming part of the shielding and grounding system Note 1 to entry: d.c. continuity has to be given and minimum shielding requirements have to be met. <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 3.2 Symbols and abbreviations 4 Cable construction 4.1 Conductor The nominal conductor diameter shall be ( 0,5 mm and ( 0,8 mm. 4.2 Insulation The insulation shall be of a suitable material according to the relevant part of EN 50290-2. 4.3 Cabling elements The cable element shall be a pair or a quad. 4.4 Identification of cabling elements Unless otherwise specified, the colour coding for identification is given in IEC 60189-2. The colours shall meet the requirements of EN 50288-1, 4.4 4.5 Screening of cabling elements 4.6 Cable make-up The cable elements shall be laid up in concentric layer(s) or units to form the cable core. 4.7 Filling compound Not applicable. 4.8 Interstitial fillers Where fillers are used they shall meet the requirements of EN 50288-1, 4.8 4.9 Screening of the cable core 4.10 Moisture barriers Not applicable. <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 4.11 Wrapping layers 4.12 Sheath The sheath shall be of a suitable material according to the relevant part of EN 50290-2. 5 Tests and requirements for completed cables 5.1 Electrical tests 5.1.1 Low-frequency and d.c. electrical measurements Table 1 – Low-frequency and d.c. electrical measurements <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 5.1.2 High-frequency electrical and transmission requirements Table 2 – High-frequency electrical and transmission requirements <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 5.2 Mechanical test requirements <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5.3 Environmental tests 5.4 Fire performance tests <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Multi-element metallic cables used in analogue and digital communication and control – Sectional specification for screened cables characterised up to 100 MHz. Horizontal and building backbone cables<\/b><\/p>\n |