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. Ward operations have over 33 years of high voltage cable jointing experience and have been the preferred high voltage contractor within the mining and industrial sectors of central. Cable joints, transition joint, branch joint, cable joints. It covers safe work practices on high voltage cables and pilot cables to ensure the safety of workers. The idea of having conducting or semiconducting parts in the joint was tested based on some earlier designs of high voltage cables 4. Hai, welcome the sharing from experienced minds the best methode of ht cable jointing procedure 33kv singlecore copper cable for trifoil. Tests for axes longer than 2 meters shall be made over 2 m segments.
Insulation test between conductors, and resistance to ground using a megger. Procedure of xlpe cable jointing procedure armoured cable. Xlpe straight joint procedure cr4 discussion thread. After making any joint, other than overhead cables, the insulation, armor, and outer sheath should be restored depending on the type of the cable. Mix the resin as instructed on the resin pack and pour into the joint case until the case is completely full. Best practice for the installation of medium voltage cable accessories. If a 4 core 185mm xlpeswapvc termination with indoor earthing is required. Also suitable for transition joints, and paper joints, with the use of supplementary kits. A study of a mv cable joint sjee serbian journal of. Lv cable jointing and heat shrink ets cable components. However, it remains a symmetric and enclosed design. Resin joints, heat shrink joints, cold shrink joints, cable lugs, terminals, crimp tools, cet glands, traffic signal feeder pillars, single and double pole street lighting cut outs and isolators, slot cutting resins, reenterable resins, cabinet base sealants. Tap yl electrical uts with a ho all the way th amage the su s which lie electrical tap s a slick oute erformance.
Page 163 cable cleats, cable joints, cable terminations, cable. Managing safety hazards in electric cable splicing and. Installation guide for optical fibre cable edition 05. A complete termination normally consists of a gland and a seal assembly and, where plastic covered cable is used, a gland shroud. Shrink polymer systems 11kv cable joints are tested to cenelec standards hd 628 s1 and 629. Because of the inhomogeneous shape of a power cable joint, compared with the power cable, it is nonuniform regarding to the electricmagmatic. Ward operations pty ltd is a specialist high voltage cable jointing company that has been servicing the central queensland mining and heavy industrial areas for more than 22 years. Sterling power cable jointing training manual by phd. Cable jointing supplies high voltage and low voltage. A wide variety of cable joints termination options are available to you, such as crimp terminal, lug, and spade terminal. Cable failures cables damaged after installation a tap into an existing cable tee or wye splices. List of dualuse goods and technologies and munitions list. Ensure cable joint is level and both cables and joint are supported independently. Perform an acceptance test on cables, including terminations and joints, after cable system installation and before the cable system is.
A connection of a cable end to a rigid rod or tube usually by staking or. Contractor shall take back all the cable drums from site after successful laying, testing and commissioning of cables. Aei cables ltd birtley co durham dh3 2ra saw the cable to produce a square end procedure this leaflet shows the procedure for fitting a complete termination on an aei mineral insulated cable. A tough abrasion resistant black jacketing tube or. Cable preparation and pulling procedure best practices for. Methods of use, and pharmaceutical compositions of these compounds are disclosed. Regular education and training in risk management are critical in controlling occupational hazards.
Including resin filled, heat shrink and cold shrink products available from 3m and birkett. Mark the reference line on both plastic cable sheaths remove the cable. Commissioning tests for hv underground cables up to 33kv swp page 1 of standard work practice sp0407 ver 16 ergon energy corporation limited abn 50 087 646 062 1. Heat shrink, cold shrink and resin cable joints to suit xlpe. Joint bays are typically concrete structures buried underground ranging in size up to 6m long, 2. The design of cable jointing and termination accessories is based on this perception. Joints for connecting cables of the same design straight joints or different design transition joints, connecting a branch cable to a main cable branch joint or insulating a. Undergruond cables technical requirements and specifications technical specifications for manufacturing and testing of 2kv underground cable introduction these specifications point out the contract characteristics for design, manufacture, testing, packing, shipping and delivery cip baghdad of underground cables with their. Insulating tubing and semi conducting tubing reinsulate and reshield the areas over the spliced conductors. The thermal behavior and decomposition reaction kinetics of 2nitroimino5nitrohexahydro1,3,5triazine nnht were investigated by tgdtg and dsc under atmospheric pressure and flowing nitrogen. In some cases the dimensions of the cable are so large that the armouring cannot readily be wound back from the cable ends while jointing the core. The aim of a cable jointer must therefore to be to obtain a joint whose electrical properties are as good as the original cable both in electrical and mechanical terms. Swishpak 2 part resin compound cures to give a cast resin cable joint with excellent electrical and mechanical properties that does not allow the ingress of moisture.
This is a video we recently made of our heat shrink joint for 3 core 6. A wide variety of cable joints and termination kit options are available to you, such as application, type, and material. The power cable joint has basically a similar structure as a power cable, except that its dimension changes along the length. Electrical cable joint and electrical cable termination and. If you continue browsing the site, you agree to the use of cookies on this website. Ansiicea s93639nema wc 742000, 546 kv shielded power cable for use in the transmission and distribution of electric energy, appendix i recommended bending radii for cables and table i1 minimum radii for power cable.
Wires form the foundation of a circuit and joining them together is an essential part of making a circuit work. Specifications for cable joints, terminations, and accessories up to 36 kv saudi electricity company 12sdms01 rev. The introduction can also serve to specify the capability or resource in which the procedures are being established and provide reasons why it is important to establish such procedures. Mv cable accessories installation best practice pdf ensto.
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. When the cable is on the cable drum, the combined weight may be up to 20000kg. Delegate profile designed for any one who is required to carry out excavations in the in the vicinity. A cost effective alternative solution to heat shrink cable joints. What are the maintenance procedures for underground. Index terms cable works, cable termination, cable splicing, jointing kits, hazardous compounds i. Weems tn1452 20 pp illus august 1976 unclassified 1.
The cellpack cast resin joints offer an overall long. Shrink polymer systems for heatshrink cable joints and. Tinned copper mesh and braid reestablish the metallic shielding across the joint. These include three main types of wire splices, soldering and other devices, such as wire nuts, screw terminals and crimp connectors.
If any remove the graphite coating on the whole jointing area. The use of approved attachment procedures and techniques is required to assure. And finally, by using the proper tools and techniques, it is possible to make any type of an electrical cable joint without affecting the performance and safety of the cabling system. Visual inspection of cable joints, splices and ground connections for integrity and condition and cleaning of termination joint outer surfaces of dust and contaminant deposits. Method for jointing cables international standard electric. We also have joints for 3 core pilc, transition versions and trifurcating versions up to 193336kv.
Transport case, multi tool, assembly material, manual instruction. Low voltage cable joints, oversleeving and cable jointing accessories. High voltage cable jointing is a specialist service offered by ward operations with both paper insulated cables and xlpe cross linked polyethylene to 2kv. Check this is the latest process zone version before use. Although a distribution system with underground cables is less maintenance intensive than one with overhead lines, it is necessary to have clear procedures for preventive, corrective and condition based maintenance in order to ensure a long trouble free operational life for the cables. The introduction section of the sop describes the recognized need for procedures and lists agencies that will share the procedures. Ac 20143 installation, inspection, and maintenance of. 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. Xlpe cable at different locations between new haldia.
Testing contact resistance of terminations for signs of deterioration. The cable may weigh anything from 7kgm up to 50kgm depending on the cable size required. Cable failures cables damaged after installation a tap into an existing cable. Construction parameters of a medium voltage mv cable joint were examined in order to reduce the electric field magnitude inside the joint. Other installations, such as buried and aerial, have different installation parameters. Power cable installation guide cables installed into conduits or trays have installation parameters such as maximum pulling tensions, sidewall pressure, clearance, and jamming, which must be considered. The cable shall be of the paper insulated lead sheathed cable pilc type in conformity with nrs 0 and sans 97. Fitting joint boxes designed for new staff with no or limited experience, or knowledge of the industry, who will be working as a jointer on low voltage plastic cables only within a jointing. Cable is cut at the determined cutting length exactly vertically. During cable joint procedure ends of the cable cut with an additional length of about 100 mm to have enough lengths to adjust the peeling device. Usl1 basic underground services location and avoidance using a cat and genny duration 1 day.
Practical hv cable jointing and terminations for engineers. Birkett resin cable joints are the ideal method of jointing with mechanical or crimp type connectors on plastic or paper insulated industrial energy cables. The supplied length of cable is not sufficient to perform the intended job, e. For jointing of a cable variety of inline adapters and connectors are used. They also control the high stresses over the connectors in joints. Cable accessories with heat shrink components made of extruded. What are the maintenance procedures for underground distribution.
Typicallowerhalfofjointcaseplanview branchcable bedding steelwirearmour maincable 10 x 20 5 leadsheath bedding 5 2 x 10 typicaljointcasebottomhalf. The method used for a cable joint depends on the voltage, type of cable, type of joint, type of connector, application and other factors. Raychem d5 series dielectric barrier should be used on cables. For applications up to volts, the joints may be filled under load conditions. Cable joints move and expand due to earth shift and heat from electrical current. Constant force springs react to this movement and maintain a sound electrical connection between the steel wire armouring and the earth continuity braid. The quality of a joint or termination depends to a large extent on the skill of cable jointer. Introduction ifferent types of cable splicing and termination kits. Purpose and scope the purpose of this standard work practice swp is to standardise and prescribe the method for pre commissioning and commissioning. Provided are quinazolinone compounds, and pharmaceutically acceptable salts, solvates, clathrates, stereoisomers, and prodrugs thereof.
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. This section of the live working manual details generalised procedures to be followed when live low. This document supports the power system safety rules and its requirements assembled under high voltage transmission cables category 7. Study on semi conductive layer during ehv xlpe cable joint. Direct laying of underground cables this method is the most popular as it is simple and cheap.
The completed joint should be left uncovered before backfilling for two hours to allow the resin to fully cure. At your work area, assemble all materials your instructor provides for you. Locate the only item with an electrical cord attached. Nov 22, 1983 the length of the joint row will be one armouring wire pitch length and the crosssection of the armour joint taken at line bb will be as illustrated in fig.
Dear valued customers, ceb pos counters will be opened from 8. High voltage cable splicing and cable termination techniques final, by david e. Link boxes link boxes 64 link boxes selection tables 66 link boxes. Cable joints, cable jointing accessories, cable terminations. Thermal decomposition and kinetics of electrically. Core separators provide safe separation of cores and connectors. A simple method to reduce or eliminate this effect is to divide the.
Jointing of power cables should be as simple as twisting and taping the wire. Multicorecables on racks or trays may be bunched in a maximum of two layers. 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. Hv and lv single core cables shall be laid in trefoil groups with 150 mm clear spacing.