Aerial cable installation dds distributor data solutions. The core must be secured to the shell in the termination. Under ground cables presention linkedin slideshare. The particular stress of multiple bending lies in the alternating stress on the materials. Pdf design and installation of high voltage cables at sea. Incorrect method using a pulling chain of removal from a container. You can take independent and responsible laying in existing or prospective cable routes as a given with visco. For voltages from 1 kv to 550 kv, vetters customers receive optimal. During this phase, the balloon buoys are attached along the cable to prevent possible damages to the cable. An industrystandard cable plough weighs approximately 12 tonnes in water.
After jointing the laying spare cable and the recovered cable, the cables are released to the seabed. Cables are laid under tension around deflector rolls. Best practice guide to cable ladder and cable tray. They can be used as an operation planning tool, or as a training facility enabling users to evaluate the effects of parametric changes in. Meet the creators, innovators, and thinkers behind our groundbreaking products.
Cables or cable supports shall not be fixed directly or indirectly to plant, equipment or process piping which may require removal or replacement. Method statement for installation of high voltage hv cables. Cables shall be laid on racks or trays strictly in accordance with the laying patterns stated on the layout drawings. Figure f2 cable feed into conduit at floor level c from cable reel to cable tray, the cable is fed from the top of the reel to maintain required curvature. The structures for termination of the cable, las and stringing of. Unless otherwise specified, the cables shall conform, in all respects, to. The aim is to lay down method statement for cable installation in safe manner to prevent any damage to cable, property or individual and ensure quality of work as per contract specifications and standards. The cable laying shall have to be done, as per actual site condition at the time of execution, and as per the instruction of the engineerincharge. The covering is then impregnated with a special wax compound. For groups of cable d e is the sum of the cable diameters. Engineering and installations should jointly presurvey the job site and cable route to ensure all problem areas are uncovered before pulling. Cable laying shall be started by rotating the drum in a direction, recommended and marked side of the cable drum and cables are pulled, accordingly. After the jointing, the ship approaches to the buoy in the item 3 laying the spare cable, and recovers the buoy and cable. Cable laying plough burial of cable plough burial of cable is usually performed in water depths of less than m where the seabed conditions allow.
Temperature range the temperature range of the cable is of great importance for both the user and fitter. Laying power cables covers a wide range from low voltage to high and extrahigh voltage. Cables are laid at a typical ship speed of 6 knots. Hv and lv single core cables shall be laid in trefoil groups with 150 mm clear spacing between trefoils. The following are suggested guidelines for loop installation. Over time, the process of laying cables at sea has developed into a. Mv cable accessories installation best practice pdf ensto. Cablelaying definition and meaning collins english. Power cable laying, underground cable, cables souterraines. Clp is the industry leader in australia, new zealand and the south pacific and is the regions exclusive agent for the plumett range of cable jetting machines and winches. To avoid possible damage from a sudden stop, the payoff must be equipped with a progressive braking system. Cable preparation and pulling procedure best practices for. The methods for the underground installation of cables can be categorized as opencut and nodig.
The silk and cotton threads are wrapped around the individual conductors in reverse directions. Handle the cable drums as recommended by the manufacturer for cable drum handling. The cable is fed from the bottom of the reel so that its curvature is continuous with no reversed bends. The outline of the loops should be marked on the pavement in such a. Appendix 3 typical methods of installation of cables. During final bending the cable can, therefore, be bent more tightly. This results in a wellbalanced design and a highly efficient cablelaying vessel. Best practice for the installation of medium voltage cable accessories. Thousands of new, highquality pictures added every day. The recovered cable in above item 3 and the spare cable in the ship are jointed. The type of installation proposed based on the site conditions and terrain in the project area is underground installation in trenches.
Towards the cable landing station a, one end of the cable is paid out by the cable ship and landed. This procedure provides detailed for underground pipe installation in soil conditions as prevalent in the project area. If it is necessary to install any of these types of cable in an inair environment i. Cablelaying definition of cablelaying by the free dictionary. Page 2 of 7 cable laying products rolly winch user manual spectra rope available from 2 mm 2. Cablelaying definition and meaning collins english dictionary. All installed cables to be sealed at both ends by proper end caps shrouded to avoid dirt, debris and water accumulation. Method statement for installation of high voltage hv.
Used within an electrical installation to restrain cables in a manner that can. Cable maintenance workers may be issued on a daily basis with verbal advice that the hv transmission cable requested is isolated and they may issue to themselves a lvmech access authority. Before pulling the cable, to ensure of the stability of the payoff. This is the simplest, cheapest, quickest approach and involves digging up the sidewalk or the first traffic lane, if the sidewalk is too narrow, laying the cables at a soil depth as recommended by standards and restoring the surface. Direct laying of underground cables this method is the most popular as it is simple and cheap. Ensure all the relevant current approved shop drawings are available with the installation team. Table of cable components 12 metallic screens earthing shortcircuit operating conditions 14 grounding methods 14 earth cable protection 15 earthing diagrams 1617 laying methods 1819 cable reels 20 permissible bending radius 20 pulling tensions 20. Optical submarine cable burial method use of plow use of. The best cable laying equipment and machinery is not enough on its own, but our experience and active support can make all the difference. Practical hv cable jointing and terminations for engineers. During rare cable laying events, vessels must follow a precise. Insulation resistance of hv cable should be checked by using 5 kv megger after installation and before termination of cables and readings shall be submitted to the consultant.
Pdf underwater telecommunication cables have been connecting. Safe work practices on high voltage cables revision no. Our company installs all electrical cables, including 400mmhv, 240mmlv, 240mmhv, 185mmlv, 185mmhv, 120mmlv, 400mmlv and pilot cables. Cable burial is not an element of cable laying in this region.
Select multiple pdf files and merge them in seconds. We promise not to spam your inbox, only interesting news and updates on new products and current specials please click here. Components within the core must also be fixed in place if there is a possibility of. Electrical power cables may be installed as permanent wiring within. Cable designers guide how to specify cable insulated conductors specify quantity, gauge, stranding and insulation type for the conductors. Installation of underground cables lv to 2kv document number. These might include the installation of export and interarray cables for current and future offshore wind farms, the installation of fibre optic cables for telecoms, and umbilical installation in the offshore oil and gas industry. Pdf underground cable laying proposal to lay power cable. Weed matts are typically avoided during transits if seen during daylight hours. Tension during laying of the cable particular attention must be paid to the maximum possible tension. Engineering services, cable lay systems and cablelaying vessels specialist inhouse knowledge of mission equipment, vessel design and subsea cable installation operations enables us to deliver solutions tailored to your specific needs.
Installation guide for optical fibre cable edition 05. Optical submarine cable burial method use of plow use of marcas. Cablelaid definition and meaning collins english dictionary. The procedure covers the details of hv and lv cable installation works in cable. What are the procedures followed for underground cable. The cables to be laid using this method must have the serving of bituminised paper and hessian tape so as to provide protection against corrosion and electrolysis. The procedure covers the details of hv and lv cable installation works in cable trays through the bridges. Ihc supplies cable lay vessels to perform a wide range of tasks. Direct in the ground in trenches underground cables. Optical submarine cable laying method laying procedure. Cable networks cannot be built without joining cables together and terminating them to equipment or. It covers safe work practices on high voltage cables and pilot cables to ensure the safety of workers where it is possible for induced voltages and transfer of earth potentials to occur. We supply cobra rods, lifting jacks, cable rollers, cable pushers trailers and more. Ei 020019 installation of underground cables lv to 2kv.
Transfer the cable to the work place with help of fork lifts or crane and trailer. Exact minimum bending radii for specific cables can be found in the information sheets of the cable manufacturer. Do n cable than sp allow it to kin can alter the t cable the ca 3. Method 12 or, as appropriate 18 cables in enclosed trench 450mm wide by 300mm deep minimum dimensions. Type of cable basedon construction coaxial cable mineralinsulated copperclad cable twinax cable flexible cables nonmetallic sheathed cable or nonmetallic building wire, nm, nm b1 metallic sheathed cable or armored cable, ac, or bx1 multicore cable consist of more than one. Cable passing through fire rated walls will be sealed with fire barriers of approved type. Stay updated with the latest news from cable laying products. There are five different methods of laying cables e. In the following paper, we would like to suggest some of these areas for your consideration in. Cable handling, laying and recovery bppcables has developed methodologies and software modules for carrying out cable handling, laying, and recovery analyses. A guideline for laying of cables and installation of sleeves.
May 19, 2017 cable tags will be installed on both ends of the cable. It also sets down the method of identifying cables and requirements for safeguarding cables when working. Whether the requirement is for fibre optic cables, copper communications cables, bk cables, power cables, multiple tubes, duct separators or microducts, we use the optimum process for every situation. Table of cable components 12 metallic screens earthing shortcircuit operating conditions 14 grounding methods 14 earth cable protection 15 earthing diagrams 1617 laying methods 1819 cable reels 20 permissible bending radius 20 pulling tensions 20 fastening systems 21 cable system tests 21. Silk and cotton insulation keeps the size of the cable small enough to be handled easily.
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