Position the outer sealing sleeve centrally over the joint area. Ensure Megger Testing has been done and accepted. These methods require minimal equipment and are effective for almost any cable. Crimp connectors also bond the wires together inside by you guessed it crimping them together. 2- A tap splice connects a loose wire to the conductor at an angle, typically resembling a T shape. Use a solvent recommended by the cable manufacturer (preferably non-flammable). Knowing how to join electrical wires together is essential for both building and repairing circuits. The cold shrink tube will shrink over the cable after you make the joint. Single-hole compression terminal connectors are permitted for termination on manufactured equipment that has integral provision for single-hole lugs only. ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE, Free format text: There are two different types of commonly used cables. Above mentioned and other features and objects of the present invention will clearly appear from the following detailed description of embodiments of the invention taken in conjunction with the drawing. 0 Slide the stress control tubing (black) over the completed connector area before taping the other cores. If solvent is used follow the manufacturers handling instructions. Start shrinking the tubing at the position recommended in the instruction. @|FY5ENnubz!Akv18+ 3+7sY_:;M7K9g8q6{{4gs*::* 3- A fixture splice connects two different conductors and can be called a rat tail splice. Remove the extruded semi-conducting screen according to the dimension d as shown in table 3. Relay the cores as far as possible. The cable conductors 3 and 4 are as illustrated jointed in a ferrule 5 and a heat sink device 6 is indicated. Typically, crimp connectors are used to terminate stranded wires in electrical circuits. These joints have pre-moulded one-piece sleeves with good electrical and mechanical properties. The slip-on tubing is inserted first and then the wires are jointed. Hot works; confined space; excavation; electrical), Online Courses for Electrical, Mechanical, MEP & Civil Engineers. Change). 1123 0 obj <>/Filter/FlateDecode/ID[<5D8C838A00DEF249A1E559D6B0094238>]/Index[1104 38]/Info 1103 0 R/Length 98/Prev 544269/Root 1105 0 R/Size 1142/Type/XRef/W[1 3 1]>>stream (LogOut/ I like this sort of question as it is good to be part of the design process and to help people with making the best decisions for them. There are many different types of products on the market , but all of the above are by far the most common you will be likely to come across. Ensure that the tubing is shrunk smoothly all around before continuing along the cable. Overlap the cables to be jointed by about 150 mm. Remove the oversheath and armor according to the dimensions given in Table 1. Electric ribbon cables. Relay the cores as far as possible. Keep the torch aimed in the shrink direction to preheat the material. The method of Ultrasonic welding is the strongest and most reliable, however it is also the most expensive, requiring the use of incredibly expensive machines. Create a free website or blog at WordPress.com. Remove the semi-conducting tape screen according to the dimension d as shown in table 3. Refer to the kit label for detailed instruction. For maximum connector dimension see Table 2. Start shrinking at the joint area working towards the over sheath. Solder is the easiest one of the strongest and lowest cost methods of joining cable. The electrical connection is made in different ways and can be crimped or using mechanical connectors, soldering, etc. Special grooves are premade in the insulation material to fit inner ridges of the heat sink device. Purchase now Our MEP courses with a Lifetime deal and use this Coupon: Table Of Contents of MV Cable Joint Method Statement, Yes! Note: Do not rick the insulation! They are named tap splices because the loose wire can then tap the flow of the conductor. Three Types of Cable Connections There are three main types of electrical connections, also called connections: Western Union connection, pin connection, and anchor connection. All electrical work shall be carried out in conformance with the Scope of Work, International Electrical Code (IEC), and the appropriate standard specification.A qualified and experienced Electrical Engineer shall monitor all electrical activities related to Medium Voltage Termination Works assisted by an approved QC inspector and shall ensure that all the requirements are adhered to during termination activities. Use of superior tools and material is needed to assure quality of the electrical connections. Position the screened insulating tubing (blade and red) centrally over the previously installed tubing.Start shrinking in the center working towards the ends. After termination high pot test should be carried out and recorded. I want to get the Word File of this Method Statement. Cut the cable to the required length and remove the outer sheath as per the instruction of the termination kit manufacturer. These find use in tunnels and underground applications. Multiple conductors without insulation are classified as one conductor. Although the crimp splice is not waterproof it is simple, and if you have to make a cable connection in an environment where there is no mains power all, you need is a hand crimp tool. There is a metal plate inside the terminal where the wires are held. The wires are stripped and the bare wires are twisted one over the other as a rat-tail joint or a western union straight joint. The tubing should be fully shrunk and wrinkle-free. Remove the bedding up to 10mm from the armour cut. (adsbygoogle = window.adsbygoogle || []).push({}); There are three main types of electrical joints, also known as splices: The Western Union splice, the tap splice, and the fixture splice. (d) pressing the inner side ridges of the heated heat sink device into the polymer insulation on both power cables so as to span the conductor joint and melt the polymer insulation to anchor the polymer insulation to the heat sink device. Powered by Discourse, best viewed with JavaScript enabled. Cover the 20mm of conducting layer and about 5mm of the semi-conducting tape screen with conductive paint. Secure the ends of the armour wires with a wire bender. L1oP0| #|CLsUXk y Note: Continue immediately with step 10 while the insulating tubing is still hot. Slide the top long sealing sleeve over the long side of the joint.Position the sleeve so that it overlaps for 100 mm onto the over sheath.Shrink it into place start ng from the joint area and world ng towards the over sheath. The cable ends are usually mounted in a jig (not shown) during the jointing process. All personnel who carry out termination work shall be certified. All activities shall be done according to the approved project schedule. While a solder joint is not flexible and must be assembled correctly it is my personal favorite. The termination kit should be selected according to the system voltage and type of connection. ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALCATEL;REEL/FRAME:012043/0126, Free format text: The outer jacket is a heat shrink material that, by shrinking down to the diameter of the cable, creates a basic environmental barrier. Assigned to ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE, ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE. The wires of the loose wire are wrapped around the conductor, first with one on one side and then with five or more on the other. Tubing should be cut smoothly with a sharp knife leaving no jagged edges. Verify the location of the cables to be jointed. Mostly used in power cables, they can be used for any cable to cable connection. Solder Sleeves are similar to the Crimp Splice; however, they have the added benefit of having an inner lining of solder that creates the joint when being heated. Ensure the torch is always used in a well-ventilated environment. Assembling elongated conductors, e.g., splicing, etc. %%EOF Refer to the kit label and the title of the installation instructions. This method statement of MV cable joint describes safe practices specifically pertaining to the jointing of MV Cables at all relevant areas. Cover the end of the semi-conducting tape screen and the first 10mm of the conducting layer with the plastic tape (adhesive side outwards). Assembling elongated conductors, e.g., splicing, etc. Secure the ends of the armor wires with wire binder. Position the short sealing sleeve over the short side of the joint. Some of the most common are: Non-metallic cable sheath: These cables are also called non-metallic cables or NM cables. Our total scope of work is to make jointing of MV Cables at all relevant areas according to approved design drawings, project specification,s and approved material submittals for the satisfaction and approval of the Consultant. 1141 0 obj <>stream This procedure shall be communicated and understood by the personnel involved associated with the tasks before commencing the activity. As a rule, all non-ferrous metals are suitable for this joining technique, however, copper, aluminum and their respective alloys are particularly well-suited. Slide the screw clips over the cable ends. %PDF-1.6 % Clean and degrease the connectors and the insulation. The other is a shielded cable with a black, red, white, and green insulated wire in a protective, flexible metal housing, often called a wire. The tailing should be fully shrunk and wrinkle-free. There are a few different types of wire joints, alongside various methods for holding wires together. Strat shrinking in the center working towards the ends. For conductors cross sections from 6-16 mm, fix the joint case in place with roll springs as shown in the picture. The solution is quick and requires no special cutting tools. Shape and position the cores as shown in drawing A and cut them as the reference line. Pull the insulating tubing (red) from the inside of the screened tubing (black and red) and position it centrally over the stress control tubing. Pencil-like blue flames should be avoided. Prior to jointing of the cables, physical inspection, and phase identification/verification. Mark the reference line (the middle of the overlap). Note: Please dispose of all waste according to environmental regulations. for communication cable, Cable junctions protected by sleeves, e.g. Joint the conductors by crimping. Two wires can be inserted into the wire nut, and once the nut is twisted, they are held in place. Smooth out the surface of the insulation with a thin film of silicone grease. The main features of the invention are defined in the claims. If you are not sure which is best for you then fear not your helpful cable assembly experts will be there and happy to help you! The Western Union connector connects two conductors and is especially useful for repairing a broken wire. Tubing should be smooth and wrinkle free with inner components clearly defined. Keep the flame moving continuously to avoid scorching the material. hbbd```b``n 209L^`YyDrN r` X|ddoH7|)#4$3[ 3 Q CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Shrinkback of the polymer insulation is effectively prevented. The purpose of this is to describe in detailed procedure for cable jointing using. The heat sink device consists of two sleeve halves 7 and 8 having inner side ridges 9, 10, 11 and 12. The steel surface shall be thoroughly cleaned before making a grounding connection. Non-metallic cables have two or more insulated conductors and usually a conductive ground wire. These jointing kits may exist as straight through cable joint type linking two cross-linked polyethylene cables (XLPE) or two paper insulated lead covered (PILC) cables. The Solder Sleeve is robust, simple and effective but does need to be used by an experienced trained assembler; this is because the combination of heat and the fact that you only get one shot to install these means they must be assembled correctly to work effectively. CHANGE OF NAME;ASSIGNOR:ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE;REEL/FRAME:010070/0287, Free format text: You can use these for all cross-sections of cables. Slide the outer sleeve over one cable end. Owner name: The work will be carried out with professional and skilled technicians. Wrap plastic tape (adhesive side outwards) around the insulation 20mm from the end of the extruded screen. Pencil-like blue flame should be avoided. Use a propane (preferred) or butane gas torch. A good example of the use of a solder sleeve is splicing a piece to wire to the braid of a multi-core cable. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); View compaqinternationals profile on Facebook, View compaq-internationals profile on LinkedIn, View Compaqinternationals profile on Google+, Mechanical Shear Head Lugs | Mechanical Shear Head Connectors, You can protect your valuable devices now, Surge Arrester Are Must in Every Industry for the Safety of Workers, Arresters and Insulators Are Readily Common These Days, There Are Number of New and Trendy Products Available in Market These Days, Electrical Fuse and Its Application in the Industry, The Electronic Devices Which Are Very Famous and Readily Available. The above detailed description of embodiments of this invention must be taken as examples only and should not be considered as limitations on the scope of protection. It has a ventilation to display the letters. For cable lugs, 120mm and above, high-pressure compression or hydraulic crimping shall be used. A question I am often asked is, what is the best way to create an in-line wire to wire connection?. Slide the shortest of the three sealing sleeves over the short side of the joint.
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