Tài liệu Training - ADC KRONE - Installation Tips doc

23 Installation Tips Do’s and don’ts for installation. This advice applies equally to copper and fibre-optic cable. 23 SLIDE 2 General Public Safety Rules n KRONE is obliged by European Law to make course attendees aware of Health and Safety rules and correct working practices. n Office Working: – When working in an office, mark off areas where cables could be a potential hazard – Remove all customer’s items that could be damaged during the installation. n Remember: A tidy job is a safe job! 23 SLIDE 3 Protective Clothing n Hard hats must be worn on all building sites. n Protective shoes must be worn at all times. n Protective gloves should be worn when pulling in cables. n Goggles must be worn when removing ceiling tiles or when drilling and chopping into walls. n It is advisable to wear protective overalls to stop loose clothing getting caught. 23 SLIDE 4 Ladder Safety n Before using ladders and stepladders, make sure the correct Safety Procedures are followed for: – Siting – Right ladder for right job – Bad weather use – Slippery surfaces 23 SLIDE 5 Hazardous Materials and Precautions n If you think you may be working in an area where asbestos or other suspect substances are present: – Stop and inform your supervisor. – Always ask your Supervisor if you have to work in the proximity of unknown substances. n Always observe your national Health and Safety at Work regulations. 23 SLIDE 6 Possible Routes n A careful survey of cabling and wiring routes should be made to select the best alternatives. n The time taken completing a site survey of cable routes will expedite the installation. n Look for possible routes: – Suspended floors – Suspended ceilings – Building risers n Concealed cable systems should be used wherever possible. n Be aware of all electrical cable runs and inductive lighting. n Be aware of anything that could cause interference to the cable. 23 SLIDE 7 Estimation of Cable Needed n Use site plans to estimate length of cable needed, remembering to leave at least: – 50cm at socket – 2 meters at frame (for terminating). n For short runs pace out length. n For suspended ceilings, remember to include length to ceiling and drop to floor. n Do not exceed the cable lengths specified in the Standards. n Consideration should be given to the use of fire retardant cable with low smoke emission properties such as LSZHFR. (Low Smoke Zero Halogen Flame Retardant). 23 SLIDE 8 Cable Routes n Cables should follow well defined routes. n Tray work can be used when available, but must be segregated from other cables. n Where tray work is not available fixing to the top ceiling must be made every 300mm max. n Route round walls or under the floor using trunking, if this is not possible, use cable tray in the ceiling space. 23 SLIDE 9 Routing Precautions n On no account should cables be suspended from ceiling support hangers. n When cables are concealed, they must be labelled at all points where they enter and emerge. n Fire walls and barriers must be reinstated to the original standard of protection. n On no account should cables run near fluorescent lights and inductive circuits. 23 SLIDE 10 Site Plans and Building Plans n Site plans will be available for a new construction; consult with customer and construction company for running cables. n Occupied building: Ask customer for a plan with socket requirements marked on it. n A room or closet should be chosen for the central distribution. n There should be adequate room to work freely around the frame and equipment. n Be aware of heat dissipated from the telecommunication equipment and look at what air flow is available; natural or installed. n Distribution frames should not be located where personnel could be put at risk. Example: lift shafts, motor rooms. [...]... the ceiling or other out-of-the-way place However, do not exceed the 90m rule 23 Common cabling installation faults n Excessive untwisting of the pairs prior to insertion into the IDC contacts The maximum allowed is 13mm; n Failure to adhere to the maximum bend radius (less than four times the diameter of the cable); SLIDE 24 n Over-cinching of cable bundles 23 Installation - Cable sheath removal n... Where data cables run in parallel to power cables without screening then a minimum distance of 150mm is recommended 23 Do n … use the correct categorised 4-Pair Cable n … label each cable before installation, mark it at both ends - more than once - using a waterproof marker n … make the longest run first, so that you can take advantage of the pull string on the shorter runs n … run cables straight and... cables are located at the fronttopmost position of the rack and then as necessary Depending on the number of outlets per patch panel more cable management fields should be provided 16-outlet - 1 per 2 panels, 24 or 32-outlet one per panel 23 Cable management for permanent wiring is located at the back of the cabinet and secured using Velcro ties Shielding and earthing n Campus, Building and Floor... the cable during installation and 4x when installed n … stretch cables (max pulling force should not exceed 110 Newton) n bend the cable or "kink" it when tying it down or laying it in cable trays or runway strips SLIDE 21 n … allow cable to be stretched, pinched, kinked, walked on or have any other undue stress or tension applied to the cable 23 Don’t n … tie cable ties too tight - they should be... Attenuation performance SLIDE 25 n There are no standard requirements on the maximum amount of cable sheath to remove, but we recommend that no more that 75 mm (3.0″) of the sheath be removed 23 Installation - Pair untwist n The following are quotations from Standards: – July 1991: “UTP connecting hardware shall be installed to provide minimal signal impairment by preserving wire pair twists as close... 27 13 mm max 23 75 mm max Floor Distributor Layout Information on laying out a cabinet for use as a floor distributor 23 Overview n The detailed layout of distributors will vary naturally from installation to installation depending on the equipment fitted, but there is an overall scheme that is becoming generally accepted SLIDE 29 n The scheme allows for the expansion of the wiring network and maintains... reorganisation when additions or alterations are made 23 Provisioning (1) 1 UTP/STP cabling to users’ outlets Normally RJ45 patch panels 2 Twisted-pair connections to voice circuits from the PBX via the Building Distributor Also RJ45 patch panels but may be LSA-PLUS Modules fitted in a magazine 3 Active communications equipment connected to the Campus data network SLIDE 30 These always require an electrical... with cable - leave ample slack A metre or so of cable costs a lot less than the time it takes to redo a cable run because of cable lengths being too short or the cable being stretched n When you wire the jacks and patch panel you should have enough slack to reach the floor and extend another metre at both ends of the cable SLIDE 23 – In addition, it’s standard practice to leave a service coil - a few... formed/secured using fabric Velcro ties This form of cable tie allows additions and changes to be made easily, does not distort cables and will not tear the insulation If nylon cable ties are used, mechanical tie-wrap guns should never be used 23 Recommended cabinet layout n Locate the Horizontal Wiring patch panels at the top of the rack, expansion is downwards towards the active equipment n Locate Active Communications... of cables to draw wire and pull to the first opening in ceiling SLIDE 13 n Connect second cluster to draw wire and repeat the clusters process until you reach the end of the run 23 Precautions for Sub-floor and Ducting Access n Floor access traps should not be left open and unguarded n When working in a floor access use proper guard rails round tile access SLIDE 14 n As soon as work is completed all . 23 Installation Tips Do’s and don’ts for installation. This advice applies equally to copper and fibre-optic cable. 23 SLIDE 2 General. use the correct categorised 4-Pair Cable. n … label each cable before installation, mark it at both ends - more than once - using a waterproof marker.