These features allow the installation of the jointing system in. Jointing is a craft that requires solid experience, both for extruded and mass impregnated mi cables. Press ends of the wires down close to the straight portions of the wire to prevent the ends from piecing through the. Within our range of tools and equipment, we stock low voltage, medium voltage and high voltage cable preparation tools, gas torches for heat shrink tubing installation and hydraulic cutting tools to cut through low voltage, medium voltage and high voltage cabling so all the essentials for cable jointing are all available from one source.
The supplied length of cable is not sufficient to perform the intended job, e. These include three main types of wire splices, soldering and other devices, such as wire nuts, screw terminals and crimp connectors. Method for jointing cables international standard electric. May 14, 2014 11kv heat shrink cable joints are ideal for direct burial, overhead and vertical cable jointing of 3 core cables. Working in partnership with a well established supplier of copper alloys to the electrical industry has enabled us to make a heavy investment in stock. Different types of cable jointing methods in electrical.
When the various layers are removed, cuts should extend only partially. Cable supports should be corrosion resistant and located so that the cable insulation does not become abraded due to cable movement from wind or water forces. They also control the high stresses over the connectors in joints. A flexible cable having a proprietary cable connector would generally be satisfactory provided the cable is properly made off and that the mechanical protection afforded by the enclosure is. Managing safety hazards in electric cable splicing and. Cables shall be dressed properly,secure cables to cable tray using cleats where the cable is fixed to a vertical cable tray or ties where the cable tray surface is horizontal without any overlapping and it will be ensured that the cable distance is maintained as per approved shop drawing.
Method statement for installation of high voltage hv cables. Power cables simply the best for locating the next task is to locate the position of the underground cable it is useful to consider the merits of the individual techniques. There are a few different types of wire joints, alongside various methods for holding wires together. The aim of a cable jointer must therefore be to obtain a joint whose electrical properties are as good as the original cable both in electrical and mechanical terms. A premoulded cable joint consists normally of one elastomeric body, where all the stress control elements are integrated see picture 1. These are needed when one makes repairs to pieces of damaged cable sections or when one wants to lengthen the existing cable for use. Apprentice cable jointer powerline certificate iii esi cable jointing background the cable jointing apprenticeship will be conducted over a fouryear period. Whether youre working underground, on overhead lines, in low or high voltage applications or anywhere else, our cable jointing training courses are the perfect entrylevel step. Geometrical, where the contour of conducting elements is controlling the electrical field at the end of a high voltage cable. Cable routes should also avoid areas of likely damage from physical operations on the structure. The basic principles of cable jointing and terminations construction of electrical power cables, different types of cables for various voltage ratings and manufacturing aspects different types of connectors and connection methods different. The idea of having conducting or semiconducting parts in the joint was tested based on some earlier designs of high voltage cables 4.
Some of the practical training for this course will take place in an operational area. Whether youre working with high or low voltage cables, electrical training course is the best place to get the training you need to work safely and expand your skillset. This method statement defines the procedure step by step to implement the correct practices for installation of high voltage hv cable in order to ensure that the job execution complies with the project requirements and serves the intended function to satisfactory level. The methods used to terminate the cables vary according to the type of cable, type of connector and application. Hv cables general construction methodology pe424f7001r00001001. Knowing how to join electrical wires together is essential for both building and repairing circuits. Plumbers metal it has 30% tin and 70% lead is used for plumbing joints in. The purpose of this report is to inform the reader of the typical methods for installing an underground cable along public roads. This includes situations where a cable termination is being carried out in which case the cable sheath shall be bonded to the local earth system. A key to good cable preparation is the use of sharp, high quality tools.
Another common method is heat shrinkable stress control tubing that is used to control high electrical stresses at insulation screen terminating point in medium voltage plastic and paper insulated cable joints and terminations up to 36 kv. Nov 10, 2015 100 pair telephone jelly cable jointing aap log pura video dekhkar ceble jodana seekh sake hai. Enhancing the reliability of cable networks cable accessories. Wrap the end of one of the wires around the straight portion of the other wire, and then do the same for the other wire. High voltage cable joints heatshrinkable joints ehvsh 46 one piece joints ehvss 48 three piece joints ehvst 51 fibreoptic addon kit for hv cable joints 54 iv. You are required to haveprovide western power approved ppc and. High voltage connectors high voltage connectors for outdoor terminations 58 high voltage cable terminations high voltage dry plugin terminations high voltage cable joints. It should be noted that where the word accessories are used refers to cable splicing and termination materials.
It j desirable to obtain the detailed procedure front the cable manufacturers, 0. With our cable jointing courses, you can learn a wide variety of useful skills designed to help you perform cable jointing on insulated electrical power cables. Ct the require mcnts of the indran llcctricity rules, 1956 and other regulations in. For the stress control, basically the following methods are known. Cable jointing and termination pracuces are hrrctly described for general guidance. The design of cable jointing and termination accessories is based on this perception. Cable soldering methods 28 solder there are two types of solder used in electrical work fine soldertin mans solder plumbers metal i. Cable jointing tools mv hv jointers tools, high voltage.
Ward operations has a strong working relationship with companies like anglo american, bma, rio tinto, pacific aluminium, ergon energy, xstrata coal and curragh queensland mining, just to name a few. Cable failures cables damaged after installation a tap into an existing cable tee or wye splices. Types of electrical joints and terminations back to basics. The procedures apply the principles established by the the procedures apply the principles established by the scottishpower safety rules electrical and mechanical to achieve safety from the system and in. Method statement for installation of high voltage hv. Sep 07, 2018 wires form the foundation of a circuit and joining them together is an essential part of making a circuit work. The new design of resin cable joints from 3m electrical features safer mould bodies and scotchcast resin delivery system.
The benefits of the universal joint for the repair and installation of subsea fibre optic cable systems are widely acknowledged within the telecommunication industry. Jointing of power cables should be as simple as twisting and taping the wire. Cable joints should be completely waterproofed using an appropriate cable jointing compound. In circumstances where there is a need for technology that does not require the need for the use of heat, torches or adhesives, 3m cold shrink joints. The basic principles of cable jointing and terminations construction of electrical power cables, different types of cables for various voltage ratings and manufacturing aspects different types of connectors and connection methods different methods of cable terminations and jointing and choosing an appropriate type for every. The quality of a joint or termination depends to a large extent on the skill of cable jointer. Tin mans solder it has 60% tin and 40% lead has a low melting point due to high amount of tin commonly used in electrical joints i. Cable ship or landing station is in charge for fiber testing after the joint box is. D, in electrical submersible pumps manual second edition, 2018.
Cable joints should be completely waterproofed using an appropriate cablejointing compound. Ever since electricity cables were first used the problem has arisen of how to joint them together. Also, for clarity and easy flow of discussion, the word cable splicing and termination will occasionally be replaced with cable works. Jointing methods 5 jointing methods eagles plumbing shop. Mseal kastex cable accessories for low voltage pvc pilc xlpe cables have been designed for simplicity in installation and a prolonged service life. Not using the correct type of electrical joint can result in a useless circuit, at best, and a dangerous one, at worst. Earth conductor shall be laid parallel along with cables. For this reason, it is common practice to cut off a portion of cable after pulling to assure an undamaged end. The main test methods used are as mentioned previously.
Most akatherm products can be welded by electrofusion. The present invention relates to a method for jointing cables comprising a cable core constituted by one or more insulated conductors which may be enclosed within an impervious sheath, at least one layer of armouring elements, e. Choose crews based on the length of the pull, total degrees of bend, tail loading force required to pull cable off feed reel, use of lubricant, and use of power. Method statement for optical fiber cable installation project. Electrical cable jointing procedures electrical equipment. Procedure for heatcold sinks cable joint termination. Cold shrink was invented by 3m over 40 years ago to avoid the need for a heat source or naked flames in hazardous areas. This document describes the procedure of jointing of wires in the project, and to ensure that all concerned persons are familiar with the sequence of activities, utilization of resources, and execution of the works in compliance with applicable safety and quality procedures, and project documents and specification. Mediumhigh voltage cable preparation it is necessary to begin with a good cable end. Cable joints and terminations caledonian cables ltd.
They are the cable jointing product of choice of energy supply companies, industry and the electrical trade for permanently connecting cables buried in the ground. One part cable joint mould construction with top seal and fixing clips simpler cable jointing installation process, less resin leakage. Using the akafusion couplers and equipment, pipe s, fittings and prefabricated pipe sections can efficiently be assembled. Turn the pages to discover cable splicing and termination techniques that can help reduce the risk of errors that could cause premature electrical failures and. Typical electrical cable jointing methods western union splice joint. Sep 08, 2014 the quality of a joint or termination depends to a large extent on the skill of cable jointer.
Jointingtermination process of different type of cable. Work or testing on hv cable systems including cables subject to induced voltage opsaf5. Mseal kastex joints and terminations for lv cables are based on a cast resin system. Different types of cable jointing methods in electrical networks. Also suitable for transition joints, and paper joints, with the use of supplementary kits. Raychem power cable accessories have over 40 years of design life which has been proven by longterm ageing tests and as has been witnessed in the field. Cable jointing solutions ltd cable joints products. Practical hv cable jointing and terminations for engineers.
These features allow the installation of the jointing system in ducts, vaults and directburial applications. Mv cable accessories installation best practice pdf ensto. M seal kastex cable accessories for low voltage pvc pilc xlpe cables have. Relicon cable joints are suitable for universal application as branch or straight through joints in lowvoltage electrical installations. A study of a mv cable joint 5 conducting materials, was found to produce an extremely high total field at certain points and thus obstruct the quality of the joint. The casting resin is polyurethane based which has complete compatibility with the cable components. Answered this document describes the procedure of jointing of wires in the project, and to ensure that all concerned persons are familiar with the sequence of activities, utilization of resources, and execution of the works in compliance with applicable safety and. In most of the electrical distribution networks one finds extensive use of cable jointing kits. This is a straight joint used for small solid cables. Western power distribution cable jointing familiarisation. Cable jointing tools are also available to establish a precise chamfer, groove, pencilling, shaving or cut to mediumhigh voltage cable insulation multifunction tools with the capability of performing several stages of cable preparation are available and also contained tool kits for 11kv33kv cable jointing. A good rule of thumb to cover all these additional cable lengths is to allow 1 percent extra for outside plant outdoor cable runs and 5 to 7 percent extra for inside cable runs. Cable joints and repairs hse and las working together hse. By ensuring that delegates are conversant with the full range of joints, accessories and terminations in use today, we aim to provide a comprehensive update on.
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