Telecom Cables for Indoor Plant
Armoured F/FTP Cat6 LSZH Cables
Lan cables made up of 4 pair F/FTP Cat6 cables are used to ensure transmission of digital signals between stations and control centres, feeding information to and from ticket machines, barriers, clocks, display systems, lifts and escalators. Each pair of these cables are screened with individual aluminium foil, with overall aluminium foil screen. Other options include UTP (Unshielded), FTP (Overall aluminium foil screened), S/FTP (Individual aluminium foil screened with overall copper braid screen). The cables are suitable for installation in cable trays or on hooks. Galvanized steel braid armouring can be applied for rodent protection. The applicable standard is RATP Cat6-K20 for France RATP.
Armoured Optic Fibre LSZH Cables
Using a fiber optic backbone, the communications system is well connected by fiber optic cables. The communication system includes public address (PA) systems, emergency telephones, centrally connected ticket kiosk, closed circuit television monitoring, and controlled and alarmed access points to the emergency walkways. The PA system also services the vehicles and the OMSF. The on-board system provides for announcements of the next station, door closing warnings, and any service interruptions, as well special announcements about special events, emergencies, and so on.
The cables are used for long distance telecommunication and signalling links using either single mode or multimode optical fi bers in suburban infrastructure. These halogen free cables are laid on hooks, pulled through ducts or cables trays. The applicable standard is RATP K209A/B for France RATP. The cables can be applied with corrugated copolymer steel armouring for rodent protection.
50/75Ω LSZH Coaxial Cable
The video surveillance system within a station and between stations is made possible with coaxial cables. Analogue signals from CCTV cameras are transmitted by either 50 or 75Ωn coaxial cables. The 50Ω cables are HF transmission coaxial cables for GSM antennas. All radio-based communications transmits and receives information relayed through antennas located along the guideway. The 50Ω cables include: solid red copper; solid copper coated aluminium; red copper tube; corrugated red copper tube (for 1'5/8F type). The 75Ω cables are HF transmission coaxial cables. These include solid red copper (for type 11 RTC) used for video surveillance or red copper tube (for type KX6) used for cameras. The Halogen-free cables are suitable for being laid on hooks, and pulled through walls or through technical ducts. The applicable standard is RATP K26 for France RATP.