Types of timber joints used in woodworking toproutertables. If you too want to publish on the blog, send us a mail so that we can discuss. This type of soldering is a procedure for connecting two terminals of the base metals by forming liquid metallic space filler, which runs by the attraction of a vessel through the joints and cools down to give a solid union through diffusion and atomic magnetism. Live jointing techniques shall be used at all times when. Use cable type, diameter, and number of pairscores to select kit type, armour continuity, and connectors from the chart below. Proper cable termination practices are vital for the complete and accurate transfer of both analog and digital information signals. The heat shrink tubing material is either polyolefin or nylon. Oct 26, 2016 jointing two pieces of wood can be done in many distinctive ways. Selection guides for low voltage joint and termination kits and low voltage connectors and lugs issue 4, may 2005. A wide variety of types of cable joints options are available to you, such as type. Specification for joints, stop ends and outdoor terminations for distribution cables of rated voltage 0.
For that reason, most cables are named after their metallic shield e. Wiring a process of connecting various accessories for distribution of electrical energy from suppliers meter board to home appliances such as lamps, fans and other domestic appliances is known as electrical wiring can be done using two methods which are. Gloves for cable jointing type of cable class 1 rubber gloves shall be worn at all times from the point of. The method used for a cable joint depends on the voltage, type of.
This section of the live working manual details generalised procedures to be followed when live low. Types of wiring systems and methods of electrical wiring. Procedure for heatcold sinks cable joint termination. Example of the construction of a multi fiber cable ii. One part cable joint mould construction with top seal and fixing clips simpler cable jointing installation process, less resin leakage. 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.
These three cable types each require their own accessory designs, so it is important to identify the cable construction details in order to select the right joint or termination. Managing safety hazards in electric cable splicing and. Plenty of joints arent very stable on their own thats why they are supposed to be mixed with other construction methods, while others are stable. Electrical cable jointing procedures electrical equipment. There are several different types and styles of cable management hardware. High voltage underground cables i cable cable components 6 conductor 78 inner semiconductor shield 9 xlpe insulation 9 outer semiconductor shield 9 metallic screen 910 outer protective jacket 11 table of cable components 12 metallic screens earthing shortcircuit operating conditions 14 grounding methods 14 earth cable protection 15. Method for jointing cables international standard electric. Practical hv cable jointing and terminations for engineers and technicians. 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. Other than electrical insulation this type of joint find use in providing environmental protection and make seals for cable entry. In this cable jointing type, we use plastic shrinkable tube.
The sb earth continuity kit for an armoured cable joint is supplied seperately. 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. A wide variety of types of cable joints options are available to you, such as crimp terminal, lug, and splice. Cables must be buried in waters where marine traffic is present.
Apprentice cable jointer powerline certificate iii esi cable jointing background the cable jointing apprenticeship will be conducted over a fouryear period. Dc cables, and in 1999 we qualified a 1 gw cable for 500 kv dc operation. Mar 01, 2017 different types of cable jointing methods in electrical networks posted on march 1, 2017 by compaqinternational1 in most of the electrical distribution networks one finds extensive use of cable jointing kits. The common type of terminations are crimp connection, soldered connection, compression termination, and wirewrapping connection, direct connection, loop or eye connection. Scotch 77 tape is an arc and fireproofing tape designed to protect all types of electrical cables. This specification includes heat shrink, cold shrink and cold applied joints and terminations for lv, 11kv, 22kv and 33kv cable. About 15% of these are terminals, 12% are connectors, and 0% are cable clips. Types of electrical joints and terminations back to basics.
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. About 4% of these are terminals, 31% are connectors, and 0% are other wiring accessories. Hv cable joints terminations high voltage 11kv 33kv heat. This means that the electrical field is controlled by the contour of conducting elements integrated into the joint body. Perform a shieldcontinuity test on each power cable by ohmmeter method. Wires form the foundation of a circuit and joining them together is an essential part of making a circuit work. Installed fiber optic cables appear similar to copper cabling, but carry much more communications bandwidth. The main test methods used are as mentioned previously. Cable joints and repairs hse and las working together hse. Mseal kastex joints and terminations for lv cables are based on a. How to make termination joint of 11kv 3 core xlpe cable this video is explains the complete procedure of cable termination joint. However, mseal kastex lv joints and terminations can be tailor made to suit the technical requirements of different utilities. Contractor shall take back all the cable drums from site after successful laying, testing and commissioning of cables. Insulation displacement connection idc termination is the recommended method of copper termination recognized by ansitiaeia568a for utp cable.
All of these products are designed to properly support the inplace cables and relieve tension. Our vast experience from submarine cable projects has made us an ideal supplier of cables for offshore oil. The major part of the worlds longest submarine power cable is also produced by abb. Weems tn1452 20 pp illus august 1976 unclassified 1. Joining electrical power cables can be as simple as twisting the wires. Ever since electricity cables were first used the problem has arisen of how to joint them together. Different methods of soldering required for electronics. Wiring a process of connecting various accessories for distribution of electrical energy from suppliers meter board to home appliances such as lamps, fans and other domestic appliances is known as electrical wiring can be done using two methods.
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. Sep 08, 2014 the quality of a joint or termination depends to a large extent on the skill of cable jointer. Nov 10, 2015 100 pair telephone jelly cable jointing aap log pura video dekhkar ceble jodana seekh sake hai. Pdf because cables and accessories are an important art of the electric infrastructure they are subjected to several tests. A wide variety of 3 types cable joints options are available to you, such as jacket, type, and application. Where the cable crossing is subject to flow or tidal currents, anchors are often used to prevent excessive drifting or shifting of the cable. We will discuss about the different types of high voltage cables, the need for jointing termination as well as various types of jointing termination kits that are available in the market. Knowing how to join electrical wires together is essential for both building and repairing circuits. Practical hv cable jointing and terminations for engineers. Test methods and requirements en 50393 test methods and requirements for accessories for use on distribution. Power cable accessories under the wellestablished brand name raychem, raychem rpg offers a comprehensive range of cable accessories for almost all cable types. The electrical relevant components of cable accessories must be marked with the following data.
Cable ship or landing station is in charge for fiber testing after the joint box is closed 6. The methods used to terminate the cables vary according to the type of cable, type of connector and application. Enhancing the reliability of cable networks cable accessories. Point at which leather outer gloves shall be worn 3 or 4 core waveform cutting into or removing the outer pvc sheath from. May 14, 2014 sps 11kv heat shrink cable joints are tested and specified to joint high voltage 3 core power cables with xlpe or epr insulation and steel wire armour swa and steel wire braid gswb cable. The design of cable jointing and termination accessories is based on this perception. The method according to claim 1, further comprising placing a metallic shield around the cable core before jointing of the tensioning elements in order not to damage the cable core with heat caused by the jointing and to reduce corrosion of the armouring elements at the jointing position. Heat shrinkable straight joints for unarmored plastic insulated cables with crimp connectors. The new design of resin cable joints from 3m electrical features safer mould bodies and scotchcast resin delivery system.
As explained in the previous section for high voltage applications the common design is to use the geometrical field control method. 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. Index terms cable works, cable termination, cable splicing, jointing kits, hazardous compounds i. Compare the items in these tool kits to those contained in this module and describe the similarities. The casting resin is polyurethane based which has complete compatibility with the cable components. How to make termination joint to the 11kv 3 core xlpe cable. Library card civil engineering laboratory high voltage cable splicing and cable termination techniques final, by david e. Our vast experience from submarine cable projects has made us an ideal supplier of cables for offshore oil and gas platforms as well as cables for offshore wind farms. In general, there are two methods to link optical fibers together. They also provide support for additional cable, you may need to install as a result of a move, add, or change.
Selection guides for low voltage joint and termination. The physical characteristics of type mc cable make it a versatile wiring method permitted in almost any location and for almost any application. In addition to laying cables directly on the bottom, burying cable in a trench using the jetwater method should be considered. Different types of cable jointing methods in electrical. Different types of cable jointing methods in electrical networks. Technical note voltage cable splicing and cable termination.
The level of the corona extinction voltage for joints for phase conductors shall be equal to that for the conductor. Sep 07, 2018 wires form the foundation of a circuit and joining them together is an essential part of making a circuit work. The method used for a particular joint depends on the voltage, type of. This is a straight joint used for small solid cables. A method for jointing the armouring wires of electrical cables, in particular power cables, in order to ensure that the stress or tension in the cable during handling and installation is equally distributed among the individual armouring wires. Mseal kastex joints and terminations for lv cables are based on a cast resin system. Included are deadbreak separable connectors elbows and ancillary. Very flexible yet durable under very demanding conditions.
The idea of having conducting or semiconducting parts in the joint was tested based on some earlier designs of high voltage cables 4. As a result, shield type cable identification becomes important information to know when selecting products for splicing and terminating. For jointing of a cable variety of inline adapters and connectors are used. Jointingtermination process of different type of cable. In this figure it can be seen that the earth shield of a cable 0%. Before commencement of installing 11kv 33kv cable joints ensure sufficient jointing room is available around the working area of the intended joint position to allow safe and effective cable jointing operations consider the additional work room to accommodate specialised tools such as cable cutting and crimping tools. Common types of electrical cable and conductors each type of conductor may require connectors to suit from standard to custom manufactured lugs and links with a variety of application. These include three main types of wire splices, soldering and other devices, such as wire nuts, screw terminals and crimp connectors. Terms printed in bold type are as defined in the scottishpower safety rules electrical and. Typical electrical cable jointing methods western union splice joint. Mseal kastex cable accessories for low voltage pvc pilc xlpe cables have been designed for simplicity in installation and a prolonged service life.
Regular education and training in risk management are critical in controlling occupational hazards. The most commonly used type mc cable is the interlocking type, which looks similar to armored cable or. 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. Depending on the type of woodworking some wood joints are more suitable than others. There are a few different types of wire joints, alongside various methods for holding wires together. It is the 580 km long norned cable between norway and the netherlands. Perform an acceptance test on cables, including terminations and joints, after cable system installation and before the cable system is placed into service. Introduction ifferent types of cable splicing and termination kits.
Stranded conductor the most common type of conductor used is standard stranded conductor with. 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. Relicon cable joints are suitable for universal application as branch or straight through joints in lowvoltage electrical installations. Not using the correct type of electrical joint can result in a useless circuit, at best, and a dangerous one, at worst. Swb cable has become the choice for installations offshore with various armor materials including tinned copper, bronze and other materials. Hv cable joints are suitable for mediumhigh voltage mvhv 11kv 3 core xlpe, epr and pilcpicas insulated cables heat shrink cable joints suit 11kv cables with 35sqmm 300sqmm 3 core conductors copper or aluminium this includes steel wire armoured swa cables with xlpe insulation and wire braided cables with epr insulation. He chose to focus on electrical cable joints and were glad he did. In this figure it can be seen that the earth shield of a cable 0% is cut off, the equipotential lines from 20% to 80% concentrate at the edge of the earth electrode, causing high electrical stress.
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