Position the remaining sealing sleeve over the two sealing sleeves. There are a few different types of wire joints, alongside various methods for holding wires together. The local network uses wired connections to connect computers to other computers and also to other devices such as printers. Note: Take care not to accidentally shrink the other tubing at this stage. Making of suitable grooves do, however, require special cutting tools. All the material will be available in the store, work will be done under the supervision of: Name 1: Position: Name 2:Position: Name 3:Position: Name:Mobile: Position: Name:Mobile: Position: Ensure that all materials are stored and inspected with a complete approved inspection test plan (ITP) from the manufacturer before installation. The main features of the invention are defined in the claims. Make use of the proper cable joint. These are needed when one makes repairs to pieces of damaged cable sections or when one wants to lengthen the existing cable for use with other applications. 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. Ensure that cables to be jointed are line checked to ensure correct cables are being jointed. The final diameter should be only slightly greater than the core or connector diameter, whichever is larger. Verify the location of the cables to be jointed. Crimp connectors also bond the wires together inside by you guessed it crimping them together. Shrinkback of the polymer insulation is effectively prevented. For number 4/0 and larger conductors, compression terminal connectors shall be a two-hole NEMA design. Slide the insulating sleeves over the long core ends. All our method statements are available on this link: MV cable joint MV cable joint MV cable joint, 2022 by The Engineering Galaxy - All Rights Reserved, Do you want to be notified once I publish this video? When the conductor jointing has been completed and the cable ends are still in the jig, the heat sink 6 is installed over the joint by heating the two halves 7,8 of the heat sink and pressing the hot heat sink ridges 9-12 into the polymer insulation 13, 14. All activities shall be done according to the approved project schedule. This is the end of the MV cable Joint method statement, You can read also: Metered Ring Main Unit T&C Method Statement, Busway Testing and Commissioning Method Statement, 1st Fix Installations Method Statement for Electrical and Low Current Systems. 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. While a solder joint is not flexible and must be assembled correctly it is my personal favorite. Assembling elongated conductors, e.g., splicing, etc. Not using the correct type of electrical joint can result in a useless circuit, at best, and a dangerous one, at worst. (LogOut/ Ensure that the tubing is shrunk smoothly all around before continuing along the cables. The tension in the tubing makes the joint impervious to water. Unique 60 Modern And Classic Wooden Main Door Design Ideas, 40 Amazing DIY Project Pallet Swing Design Ideas, 1619 Sq Ft 3BHK Contemporary Style Two-Storey House And Free Plan, 30 Smart Bathroom Design Ideas With Washing Machine, Magnifico One Storey House With Detailed Exterior. for communication cable with devices for relieving electrical stress, GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS, TECHNICAL SUBJECTS COVERED BY FORMER USPC, TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION. Remove the over sheath and armour according to the dimensions given in drawing A (table 1) by the manufacturer. These find use in tunnels and underground applications. For cable lugs, 120mm and above, high-pressure compression or hydraulic crimping shall be used. Center the insulating sleeves over the connectors. Lets take a look at my Top 5 ways to create a cable joint: The In-Line Crimp Splice is simple and requires minimal tools. A solution to this problem is described in WO 86/02210 where shrinkback is prevented by anchoring a special heatsink device in the polymer insulation sheaths on both sides of the conductor joint. 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. Devices connected with a LAN cable can access data from any computer connected to the network. The cable conductors 3 and 4 are as illustrated jointed in a ferrule 5 and a heat sink device 6 is indicated. 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. Pencil-like blue flame should be avoided. by distribution, connection or junction boxes with devices for relieving electrical stress, Cable junctions protected by sleeves, e.g. Remove one release paper from the void filling compound (yellow) and roll it up. Completely remove every trace of the conducting layer. The two wires are trimmed of insulation, then each is wrapped around the other six times. Ensure there is no cracking or damage to cable lugs on applying the pressure. The hot ridges melt the polymer material sufficiently to anchor the polymer insulation on both sides of the joint to the heat sink ridges. Electrical conductors are made of metals such as copper, aluminum, etc. Purchase now Our MEP courses with a Lifetime deal and use this Coupon: Table Of Contents of MV Cable Joint Method Statement, Yes! Create a free website or blog at WordPress.com. 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. Adhere to the installation instruction of the kit manufacturer. Use a solvent recommended by the cable manufacturer (preferably non-flammable). Keep the flame moving continuously to avoid scorching the material. 1141 0 obj <>stream Tubing should be cut smoothly with a sharp knife leaving no jagged edges. Do not cut the earth conductor (if any). All personnel who carry out termination work shall be certified. Neatly arrange the cable inside after the completion of the termination. Use a propane (preferred) or butane gas torch. The electrical connection is made in different ways and can be crimped or using mechanical connectors, soldering, etc. The purpose of this is to describe in detailed procedure for cable jointing using Armored Type Raychem Jointing Kit and Junction Box, in which connection will be through terminal block. Clamp the ends of the joint case onto the steel tape armour using the screw dips.Cover the sharp edges of the screw dips by fastening a piece of cable over the sheath over the screw with the remaining doth tape. The present invention relates to a method for making a cable joint between two polymer insulated power cables (1,2) including the steps of jointing the two bare cable conductors. Mark the reference line (the middle of the overlap). After forming a wire splice, its highly recommended to solder it in order to secure. hbbd```b``n 209L^`YyDrN r` X|ddoH7|)#4$3[ 3 Q Ensure that the tubing is shrunk smoothly all around before continuing along the cable. ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALCATEL;REEL/FRAME:012043/0126, Free format text: This is due to the shrinking nature of the silicone material of the tubing. It has a ventilation to display the letters. T stands for cable with thermoplastic insulation. These joints have pre-moulded one-piece sleeves with good electrical and mechanical properties. Cut the cable to the required length and remove the outer sheath as per the instruction of the termination kit manufacturer. Trim the ends and tape the bare wires. You can use these for all cross-sections of cables. The slip-on tube is pushed in place and fused. This is used in many places. by distribution, connection or junction boxes, Cable junctions protected by boxes, e.g. They are in much demand due to their high weathering quality and applicability in outdoor environments. Check to ensure that the kit you are going to use fits the cable. Hot works; confined space; excavation; electrical), Online Courses for Electrical, Mechanical, MEP & Civil Engineers. %PDF-1.6 % Sometimes when you have more than two wires you use the knotted tap joint. B: Cables with a semiconducting and conducting layer. Start 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. Assigned to ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE, ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE. It consists of multiple isolated wires running parallel to each other and is used for the simultaneous transmission of multiple data. These feature sleeves on the cables that you can push-on once you have made the joint. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Note: Continue immediately with step 10 while the insulating tubing is still hot. Relay the cores as far as possible. Compression (crimped) type connectors shall be used for terminating stranded conductors and shall be tinned copper type. I want to get the Word File of this Method Statement. Method for making a cable joint comprising the steps of: (a) providing two power cables, each having polymer insulation and a bare cable conductor end; (b) joining the bare cable conductor ends of the two power cables to create a conductor joint; (c) heating a heat sink device, the heat sink device comprising a longitudinally split metal sleeve with inner side ridges; and. Here, the wires or cable are bared and twisted one on another before the heat shrink is applied. Note: Do not use too much void-filling compound. Usually the material chosen is ethylene-propylene rubber. Ensure Megger Testing has been done and accepted. Having superior materials assure you long life of the equipment you use and the safety remains guaranteed. Conduit openings around cable connection points shall be sealed with a duct seal compound. The works will be undertaken by the contractor. Relay the cores as far as possible. Carefully read and the follow the steps of the installation instruction. 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. After a splice has been soldered, it should be covered with electrical tape. The termination kit should be selected according to the system voltage and type of connection. 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. 4- Management Structure/Resources and Responsibilities, Step 03: Cables with extruded semi-conducting screen, Step 08: Installation of Stress Control Tubing, Step 9: Installation of The Red Insulation Tubing, Step 10: Shrinking the screened Insulation Tubing, Step 11: Installation of the armoring above the joint, Step 13: Installation of the Long Sealing Sleeve, Step 14: Installation of the second Long Sealing Sleeve, Step 15: Installation of the Short Sealing Sleeve, 8- Inspection and Test Plan (and Quality Records), 10- Training and Competency of Personnel (see also 13 below), 11- Advise Any Permits to Work required (e.g. Position the short sealing sleeve over the short side of the joint. The cold shrink tube will shrink over the cable after you make the joint. Remove the bedding up to 10mm from the armour cut. with end-to-end orienting including deforming of joining bridge. Electric ribbon cables. %%EOF The slip-on tubing is inserted first and then the wires are jointed. PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362. Refer to the kit label and the title of the installation instructions. Overlap the cables to be jointed by 100mm. Cover the 20mm of conducting layer and about 5mm of the semi-conducting tape screen with conductive paint. Wrap the joint case around the joint and secure it with about two layers of cloth tape as shown in the picture. Joint the conductors by crimping. Assignors: ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE, GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER, INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES, Cable junctions protected by boxes, e.g. 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. Install the junction box at the convenient location without any obstruction from the cable tray. After termination high pot test should be carried out and recorded. @|FY5ENnubz!Ak&#v18+ 3+7sY_:;M7K9g8q6{{4gs*::* The outer layers of the cables and the joint are not shown. Start shrinking in the center working towards the ends. If necessary build up the bedding under the support ring with a piece of oversheath. Some of the most common are: Non-metallic cable sheath: These cables are also called non-metallic cables or NM cables. Hurry to be one of the lucky ones! 1- The Western Union splice connects two conductors together and is particularly useful in repairing a broken wire. Tubing should be smooth and wrinkle free with inner components clearly defined. Position the stress control tubing (Black) centrally over the connectors. Simple and easy and you can get these anywhere! The basic idea is to preheat the heat sink halves and melt/press the hot heat sink inner ridges into the cable insulation. All Compression connectors for 8AWG and larger conductors shall have a manufacturers reference compression die number and conductor size printed or stamped on the connector.
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