Raychem high voltage cable accessories up to 170 kv. Technical note voltage cable splicing and cable termination. It j desirable to obtain the detailed procedure front the cable manufacturers, 0. Hv cable joints terminations high voltage 11kv 33kv heat cold. Cable jointing and termination pracuces are hrrctly described for general guidance. Organizes, supervises and trains personnel in maintenance, welding repairs and compliance with quality assurance qa work package procedures and references. 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. Tinned copper mesh and braid reestablish the metallic shielding across the joint. Cable section with or without joint termination 2 no pressure test. Practical hv cable jointing and terminations for engineers. Cable installation record type of cable and its size voltage level cable no, drum no. To connect a third or fourth cable pc 630 with soc 630 alternatively pc 630250 with soc 250 should be used. 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. Cable faults, types, causes and how to locate faults in cables via different tests.
Date rout map, location of cable joint installation test record like ir value, hv test if any 44. Hv cable terminations 11kv heat shrink termination failure. Contractor shall take back all the cable drums from site after successful laying, testing and commissioning of cables. Compare cable data with drawings and specifications. Mains cabling, jointing accessories cable and wire id systems straight and branch mechanical connectors see 12b. The idea of having conducting or semiconducting parts in the joint was tested based on some earlier designs of high voltage cables 4. This system requires more skills and planning for installation, jointing and termination rather than. The supplied length of cable is not sufficient to perform the intended job, e. Qualification of officers appointed to assist the inspectors 5. 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. Below are pictures and comments on several findings from recent 11kv cable termination inspections.
Raychem heatshrinkable medium voltage terminations ixsu. Other installations, such as buried and aerial, have different installation parameters. First steps to reliability cable cleats, cable joints. Steel wire armour when terminating 11kv cables with heat shrink cable terminations there is a requirement to ensure safe earthing and termination of the armour wires swa steel wire armour using cable glands, commonly referred to as tophat cable glands. Insulation resistance testing of low voltage cables in the field. Typicallowerhalfofjointcaseplanview branchcable bedding steelwirearmour maincable 10 x 20 5 leadsheath bedding 5 2 x 10 typicaljointcasebottomhalf. The medium voltage cable jointing range includes the tyco electronics heat shrink straight joints for nonarmoured and wire armoured polymeric power cables, the all in one cold applied joint for single core nonarmoured polymeric cables and the heat shrink nonresin joint. Oct 03, 2014 installation, testing and jointing of lt and ht power cables up to 33 kv 1.
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. 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. First steps to reliability xlpe cable preparation controlling the initial installation costs of any power system is critical to operating companies and contractors alike. If a 4 core 185mm xlpeswapvc termination with indoor earthing is required the part. In this next video the procedure for installing heat shrink cable terminations is covered including key stages of the mv hv cable. Even for new cable more than one time hipot test at site is not advisable by manufacturer also manufacturer also do hipot at time of manufacture.
The silicone rubber joint body with integrated geometrical stress control provides proven electrical function. Ignition coils in motor vehicles function, diagnosis. Cable joint as the name implies, join the tail end of the first cable and the head end of the second cable. Such a fault can be traced by carrying out capacity test. This document will focus only on the tests that are of importance for field installers which are described as installation and maintenance tests. Technical specification for underground power cables and accessories for nominal system voltages of 66kv and 2 kv i specificationjts040110 ver 1. Resin cable joints are suitable for low voltage jointing of cables with xlpe, epr, pvc or pilc insulation, 1. High voltage xlpe cable systems techincal user guide brugg cables page 3 1. The cable end seals shall be checked after laying and if found damaged shall immediately be resealed. Joint document between energex and ergon energy energex limited abn 40 078 849 055 ergon energy corporation limited abn 50 087 646 062 joint ergon energyenergex technical specification for underground power cables and accessories for nominal system voltages of. A simple method to reduce or eliminate this effect is to divide the. Power cable installation guide figure f5 multiple sheaves figure f6 sheave arrangements for feeding into cable tray training radius the training radius is the final positioning of cable ends after the cable has been placed in the raceway.
For cables requiring additional mechanical protection, a specifically designed metallic case or encapsulation by polyurethane compound can be provided. The cast resin system provides the electrical insulation, mechanical protection and moisture imperviousness to the joint. For cable box applications, the raychem termination ixsuf can be combined with either raychem. This joint connection is termed economising circuit and is used to simplify coil production. Electrical safety and electrical work procedure prepared. Polymeric insulated cables of various designs can be adapted with respect to shielding and metal sheath. Step 6 visually inspect the cable on which it is proposed to carry out work to ascertain its general.
Click here to visit our frequently asked questions about html5. Installation, testing and jointing of lt and ht power cables. Page 163 cable cleats, cable joints, cable terminations, cable. This document supports the power system safety rules and its requirements assembled under high voltage transmission cables category 7. A complete termination normally consists of a gland and a seal assembly and, where plastic covered cable is used, a gland shroud. It may be prudent in certain circumstances to pressure test the cable section prior to connection to the system where it is considered appropriate to do so. Mix the resin as instructed on the resin pack and pour into the joint case until the case is completely full. The products are fully tested in accordance with ieee48, iec 605024 and the cenelec hd629.
Another good technique for removing crosslinked polyethylene xlp cable. How to make termination joint to the 11kv 3 core xlpe cable. High voltage cable splicing and cable termination techniques final, by david e. It may be prudent in certain circumstances to pressure test the cable section prior to. A tough abrasion resistant black jacketing tube or. Inspect bolted electrical connections for high resistance using one of the following methods. General information on high voltage cable systems 1. Your browser does not currently recognize any of the video formats available. Oct 14, 2016 11 kv hv cable megger test tamil language. It covers safe work practices on high voltage cables and pilot cables to ensure the safety of workers. Low voltage and high voltage cable testing electrical notes. High voltage xlpe cable systems technical user guide. Record for future reference the cable identification markings, which consist of sheath number, footage, and cable description codes printed on the cable outer sheath. The design of cable jointing and termination accessories is based on this perception.
The primary current flowing through the primary winding is switched on or off via the timer. Step 5 identify any cable on which work is to commence in accordance with the procedure specified in opsaf10012 pssi 12, appendix 1. Iec xlpe cable systems specified according to iec international electrotechnical commission are among many other standards accepted. We use high voltage spike to detect fault in ht cable by thumber but it may be affect property of cable.
Hv cable joints terminations high voltage 11kv 33kv heat. Cables new cable section with or without joint termination 2 no pressure test. Inspect exposed sections of cables for physical damage. Introduction ht power cables, lt power cables, ht xlpe. Procedure of xlpe cable jointing procedure armoured cable. The joint is a prefabricated onepiece design for voltage classes up to 245 kv. Htxlpe cables have high corrosion resistance in polluted atmosphere htxlpe cables have better properties of resistance to chemical and corrosive gases htxlpe cables have low installation cost because of light weight, dimensions and are far more flexible htxlpe cables have better properties to withstand vibrations, hot impacts. Alternatives to overhead presented at 47th minnesota power systems conference mipsycon november 2011 earle brown heritage center 6155 earle brown drive brooklyn center, minnesota earle c. These limits should not be used for cables subjected to pulling tensions during installation.
This coverage is achieved with a minimum number of design variants. Cable preparation and pulling procedure best practices for. Jointing of power cables should be as simple as twisting and taping the wire. A tough abrasion resistant black jacketing tube or wraparound jacketing sleeve provides the joint with external moisture seals and mechanical protection. Hts plans, supervises and performs fabrication, installation and repair of all types of shipboard structures, plumbing and piping systems. Blavier test for a single cable faults when electrical energy is generated in the generations stations, it is distributed to the different loads, i. 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. Technical specification for underground power cables and.
Home electric circuit analysis how to locate faults in cables. Best practice for the installation of medium voltage cable accessories. At this point the index mark on the clutch arm should be between the two notches on the clutch cable joint. Hai, welcome the sharing from experienced minds the best methode of ht cable jointing procedure 33kv singlecore copper cable for trifoil.
The quality of a joint or termination depends to a large extent on the skill of cable jointer. Cable companies themselves or some other manufacturers who specialize only in joints offer jointing kits. 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. Appointment of officers to assist the inspectors 4b. The table below has the earth fault duty of the hv cables used by ergon energy. Using light pressure, push the clutch arm toward the front of the riding mower until yoti feel resistance. The amount of current flowing is determined by the coils resistance and the voltage applied at terminal 15. Procedure shall be strictly follows as per manufacturers guidelines. A study of a mv cable joint sjee serbian journal of. Hdc 630 base kit include material to connect 2 cables. Open circuit fault can be occurs when cable is pulled out of its joint or a break occurs in the cable. This specification includes heat shrink, cold shrink and cold applied joints and terminations for lv. Technical specification for 112233 kv nominal voltage ht xlpe power cables 1. Method statement for installation of high voltage hv.
Cable failures cables damaged after installation a tap into an existing cable. Oct 08, 20 cable handling tools jack roller drum trailer crimping tool 43. Installation guide for optical fibre cable edition 05. Xlpe cable at different locations between new haldia. Insulating tubing and semi conducting tubing reinsulate and reshield the areas over the spliced conductors. They show typical arrangements but the procedures are the same for any variation of joint. May 2020 page 5 of 24 this document is uncontrolled when printed. Cable cabinet with possibilities to joint and toff 12 24 kv xlpeinsulated cable above ground.
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