Tài liệu Training - ADC KRONE - Installation pratices pptx

Cable Installation Guide KRONE is obliged by European Law to make course attendees aware of Health and Safety rules and correct working practices. General Safety Rules 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. Remember: A tidy job is a safe job! Personal Protective Equipment Hard hats must be worn on all building sites. Protective shoes must be worn at all times. Protective gloves should be worn when pulling in cables. Goggles must be worn when removing ceiling tiles or when drilling and chopping into walls. It is advisable to wear protective overalls to stop loose clothing getting caught. • 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 Ladder Safety • 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. • Always observe your national Health and Safety at Work regulations. Hazardous Materials • A careful survey of cabling and wiring routes should always be made to select the best possible routes. • The time taken completing a site survey of cable routes will expedite the installation. • Look for possible routes: – Suspended floors – Suspended ceilings – Building risers Possible Cable Routes • Floor access traps should not be left open and unguarded. • When working in a floor access use proper guard rails round tile access. • As soon as work is completed all covers and fixing screws should be properly secured. Precautions for sub-floor & ducting access Power Separation Distances Distance A Type of Installation Without Divider, or with Non- Metallic Divider Aluminium Divider Steel Divider Unscreened power cable and unscreened IT cable Unscreened power cable and screened IT cable 2 Screened power cable and unscreened IT cable Screened power cable and screened IT cable 2 200mm 50mm 30mm 0mm 100mm 20mm 10mm 0mm 50mm 5mm 2mm 0mm Recommended Pathway Separation Distances Auxiliary Circuits Power Cabling IT Cabling Sensitive Circuits Not Recommended Metallic Cable Trays Correct Practice Power Cabling Auxiliary Circuits IT Cabling Sensitive Circuits Recommended Recommended Pathway Separation Distances • BS EN 50174-2 states that: • Data cables and power cables must not share the same duct or conduit:   [...]... Sections: Trays Bends Risers Cross-Pieces T-pieces Cable Tray Installation Products: Stand-off Brackets Cantilever Arms Trapeze Hangers Overhead Hangers Couplers Cable Routes: Containment Position support brackets 150mm either side of corner sections, bends, T-pieces or Cross-pieces 150mm Cable Routes: Containment When fitting horizontal tray to the floor, use stand-off brackets to allow access underneath... - Trunking - Cable Tray - Basket Tray Turning Boxes etc All new types of containment must not be loaded more than 50% of capacity at the time of new installation 25% is further available for expansion The total fill rate of containment must not exceed 75% Cable Routes: Containment Conduit Installation If there are more than 2 bends, a turning box is required Cable Routes: Containment Cantilever Installation. .. of middle in the photo Installation Errors • This is not acceptable The cables should have been branched out at the support Installation Errors • Never run parallel with electrical conduits or strap to them Installation Errors A kink that has been pulled straight using excessive force Installation Errors Another example of a cable loop that that has been forced straight Installation Errors A cable... enough slack to reach the floor and extend another metre at both ends of the cable – In addition, it’s standard practice to leave a service loop (not a coil) of 2 meters inside the ceiling or other out-of-the-way place However, do not exceed the 90m rule Example: Cabinet Layout Fibre Horizontal Wiring to Outlets Active Components PABX Notes • Mains distribution for the rack is located at the back of the... at the back of the cabinet and secured ideally using Velcro ties Installation practices Right and Wrong Be Aware of Customers & Your Actions Laying Cables • Properly supported ladder rack Allowing cable transition between floors Laying Cables • Cables going through risers between floors must be properly supported for their weight Installation Errors • There are multiple problems with this picture... cables Cable Dressing Do not dress cables against sharp edges i.e cable tray angled bends, cut-off cable trays etc Box Labelling • Label the ends of cable and the corresponding box This will help for identification purposes at the central distribution frame and socket Spare Cable • • Don’t cut corners with cable - leave ample slack A metre or so of cable costs a lot less than the time it takes to redo... force Installation Errors Another example of a cable loop that that has been forced straight Installation Errors A cable that has been bent back on itself Installation Errors A cable that has been crushed Note the cuts in the cable sheath Installation Errors • The tie wrap is too tight, the cable geometry has been altered Never cinch plastic cable ties overly tight If it deforms the outer cable . Containment Cable Tray Sections: Trays Bends Risers Cross-Pieces T-pieces Cable Tray Installation Products: Stand-off Brackets Cantilever Arms Trapeze Hangers Overhead. secured. Precautions for sub-floor & ducting access Power Separation Distances Distance A Type of Installation Without Divider, or with Non- Metallic Divider Aluminium