Cable installation after satisfactory testing the cable drums will be dispatched to site for installation work. Load losses in xlpe cables are primarily due to the ohmic losses in the conductor and the metallic screen. Testing of high voltage cables manual horizon power. If performed by means of direct voltage dc, reduce the test set potential to zero and measure residual voltage at discrete. Figure f2 cable feed into conduit at floor level c from cable reel to cable tray, the cable is fed from the top of the reel to maintain required curvature. Procedure for glanding and termination of power and control cables downloads at download free pdf files,ebooks and documents. Step 5 identify any cable on which work is to commence in accordance with the procedure specified in opsaf10012 pssi 12, appendix 1. System maintenance and repair are also substantial factors in overall cost.
Library card civil engineering laboratory high voltage cable splicing and cable termination techniques final, by david e. High voltage xlpe cable systems techincal user guide brugg cables page 8 losses through skin effect the losses caused by the skin effect, meaning the displacement of the current against the conductor surface, rise approximately quadratic with the frequency. Technical note voltage cable splicing and cable termination. This 11kv cable jointer training video features use of the outdoor armour earth kit used to effectively cable gland, terminate and. This belden vfd cable termination guide takes a stepbystep approach to the connection termination of unarmored vfd cables with either foilbraid or coppertape shield constructions. Mv cable accessories installation best practice pdf ensto. Test methods for electric cables, cords and conductors. First steps to reliability cable cleats, cable joints. Pdf onsite commissioning test and diagnostics of 220kv. Cable section with or without jointtermination 2 no pressure test. Furthermore, the splicing and terminating methods for xlpe cable are simpler in comparison with other kinds of cables. Practical hv cable jointing and terminations for engineers. 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.
Pdf water treeing and dielectric loss of wtrxlpe cable. Hv cable terminations 11kv heat shrink termination failure. Cable section with or without joint termination 2 no pressure test. Specialized tools are available to aid in the removal of the various cable layers. Outdoor termination application a kit of 3 terminations for use outdoors and exposed to prolonged sunshine and other weather conditions.
Jul 08, 2017 how to make termination joint of 11kv 3 core xlpe cable this video is explains the complete procedure of cable termination joint. To connect a third or fourth cable pc 630 with soc 630 alternatively pc 630250 with soc 250 should be used. How to make termination joint of 11kv 3 core xlpe cable this video is explains the complete procedure of cable termination joint. Step 6 visually inspect the cable on which it is proposed to carry out work to ascertain its general. Wooden drum shall be properly seasoned sound and free from defects. Raychem heatshrinkable medium voltage terminations ixsu. First steps to reliability xlpe cable preparation controlling the initial installation costs of any power system is critical to operating companies and contractors alike. Weems tn1452 20 pp illus august 1976 unclassified 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. Installation work will follow a sequence of activities. Observe cable bend radius limitations and follow lug manufacturers installation procedure. The cost of energy losses can be reduced by using larger conductor.
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 earthing diagrams 1617 laying methods 1819 cable reels 20 permissible bending radius 20. All terminations meet or exceed ieee 48 requirements. Onsite commissioning test and diagnostics of 220kv xlpe cable system conference paper pdf available in water and energy international 698 january 2010 with 2,017 reads how we measure reads. At present, numerous high voltage xlpe cable systems with nominal voltages up to 500 kv and.
Most failures of xlpe cable are related to moisture ingress into joints or terminations or incorrectly applied terminations and joints both workmanship and materials may be inadequate. The splicing and termination of underground electrical distribution cable requires that the integrity of cable conductor and insulation be maintained throughout its length. Xlpe cable withstands smaller radius bending and is lighter in weight, allowing for easy and reliable installation. The material makes the difference te connectivity raychem cable. Te splicing and termination of underground electrical distribution cable requires that the. The terminations cater for all cable types including pilc and xlpe for both indoor and outdoor applications in size ranges from 16 up to sq mm up to 36kv these terminations have been independently tested by kema to the requirements of cenelec hd629. Another good technique for removing crosslinked polyethylene xlp cable. Here youll find a range of products for the power cable accessories market which has now grown to reflect the broader range of materials used by our core customer base across all industry sectors.
The cable shall be suitable for laying underground with uncontrolled back fill and chances of flooding by water and suitably designed by the addition of chemicals in the outer sheath to be protected against rodent and termite attack. Liland and others published development of a simple method for conduction assessment of oil filled cable terminations find, read and cite all the research you need on. Finally punch the cable lugs on each core terminal with the help of hydraulic crimping tool and insulate the lugs with insulation tape, tie the cable with supporting clamp and gland the cable in the transformer cable termination box, connect the cable to the bushing and fix the bolt tightly using torque wrench. Below are pictures and comments on several findings from recent 11kv cable termination inspections. By not taking care or using incorrect methods, conductors can, quite often. Top 25 glanding and termination profiles here are the top 25 glanding and termination profiles on linkedin. Heat shrink, cable gland, cable lugs, cable termination. The insulation screen of the xlpe cable was terminated in the water layer. Cleaning cables clean all carbon deposits from mvhv primary cable insulation xlpe to prevent potential tracking by using suitable solvent or cable cleaning wipes.
This is probably the number one cause of all joint and termination failures. Dry plugin indoor cable termination, cd 145170 kv 2 cable termination, apega 84420 kv 215 cable terminations outdoors dry outdoor preassembled cable termination, td 145 kv 219 outdoor cable termination, aped 5284 kv 221 outdoor flexible cable termination, apsea 5272 kv 224 outdoor cable termination, apecb 84420 kv 227. Cable cabinet with possibilities to joint and toff 12 24 kv xlpeinsulated cable above ground. If the cable is armoured, bonding of the armours must be completed using the appropriate armour earthing kit. Cable failures cables damaged after installation a tap into an existing cable tee or wye splices. For cables rated 600 v, the minimum acceptable insulation resistance values for cable lengths from 100 to feet. Cable preparation and pulling procedure best practices for. Xlpe cable preparation cable cleats, cable joints, cable. The test concerns a 230400420 kv cable system with. Unarmored variable frequency drive vfd cable termination. Pdf water ingress in highvoltage crosslinked polyethylene. Inspect shield grounding, cable support, and termination. Terminating unarmored variable frequency drive vfd cables.
Inspect compressionapplied connectors for correct cable match and indentation. Heat shrink cable termination outdoor hv 11kv 33kv 3 core. All materials are subjected to intensive quality control. Indoor outdoor terminations for 3 core xlpe armoured cables. The cost of energy losses can be reduced by using a larger conductor. Model cable termination filled with silicone oil and water. Transformer installation method statement electrical. Indoor outdoor terminations for 3 core xlpe armoured.
Under no circumstances should parts or components that have not been authorised be used in the construction of the joint or termination. The use of a kit designed for 11kv, xlpe insulated cable, will not normally work effectively on an 11kv paper insulated cable. The supplied length of cable is not sufficient to perform the intended job, e. Installation, testing and jointing of lt and ht power cables. Verify that visible cable bends meet or exceed icea andor manufacturers minimum allowable bending radius. The design of cable jointing and termination accessories is based on this perception. Procedure of cable gland range hawke international.
Test report for 36kv indoor outdoor terminationstraight joint for xlpe three core cables. Compact design for limited working access in cable end termination boxes 3m cold shrink 3 core polymeric cable terminations are suitable for both 6. How to make termination joint to the 11kv 3 core xlpe cable. This specification includes heat shrink, cold shrink and cold applied joints and terminations for lv.
Cable termination using heat shrink terminations 33kv. Test report for 24kv indoor outdoor terminationstraight joint for xlpe three core cables. A large number of commercial cable splice and termination kits are available which are claimed to fulfill these requirements. Figure 9 singlecore 36 kv cable with xlpe insulafion, bonded insulafion screen, copper wire earth screen, water. Raychem heatshrinkable medium voltage terminations ixsufoxsuf are widely acknowledged in the industry and feature an unique integrated znobased stress control system, flexibility of usage for crimp or mechanical lugs, unlimited shelf life and rangetaking kits. The objective of this paper is to provide an source of information on ehv xlpe cable end termination processes. High voltage xlpe cable systems technical user guide. Nexans cable terminations are suitable for connecting and terminating 11kv 3 core polymeric cables with stranded copper or aluminium conductors, 35400sqmm 11kv terminations connect mediumhigh voltage power cables with polymeric insulation including xlpe and epr to mvhv switchgear, transformers and cable boxes suits 3 core bonded or easy strip semiconductive screens. Technical aspects of ehv xlpe cable end termination and. Procedure of xlpe cable jointing procedure armoured cable. Hdc 630 base kit include material to connect 2 cables. Heat shrink outdoor cable terminations are also available for 3. 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. To connect polymeric insulated cable to equipment and for the outdoor terminating on to overhead lines or busbars.
Technical aspects of ehv xlpe cable end termination and on. Technical aspects of ehv xlpe cable end termination and on site brief procedure 1sachin kumar gupta, 2arun pachori 1pg student, 2associate professor, dept of ee, government engineering college, jabalpur, india abstract. Jointmaster offers a comprehensive range of medium and high voltage cable terminations aimed at the local and export markets. Raychem heatshrinkable medium voltage terminations ixsufoxsuf. Raychem high voltage cable accessories up to 170 kv. 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. Water treeing and dielectric loss of wtrxlpe cable insulation article pdf available in science, measurement and technology, iee proceedings a 1405. Were here to save you time, money and effort, and to leave you free to run your business.
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