Physical contact with cable conductors like copper and aluminium without adequate washing of. Raychem heatshrinkable medium voltage terminations ixsu. Stress relief layer in the shape of a pad rzgo is wound around the cable end, covering mainly the cable insulation and partly the screen end. This specification includes heat shrink, cold shrink and cold applied joints and terminations for lv. Procedure for glanding and termination of power and control cables downloads at download free pdf files,ebooks and documents. For underground distribution at 11kv, the xlpe cable does not compete economically with the paperinsulated aluminiumsheathed cable, but work is in progress on standardizing and assessing xlpe cable design, including trial. This is probably the number one cause of all joint and termination failures. Calculation procedure 19 installation in cable tray 20 rollers and sheaves 20 pulling tensions 21. Turn the pages to discover cable splicing and termination techniques that can help reduce the risk of errors. High voltage xlpe cable systems technical user guide. The seal assembly has a temperature range of 80c to 105c.
Furthermore, the splicing and terminating methods for xlpe cable are simpler in comparison with other kinds of cables. Water treeing and dielectric loss of wtrxlpe cable insulation article pdf available in science, measurement and technology, iee proceedings a 1405. Power cables for nominal system voltage up to 33kv. Specification for cable accessories, termination and jointing materials for underground electrical power cables for nominal system voltage up to 33kv check this is the latest process zone version before use. An outer dual wall heat shrinkable tube dw hst is placed over the stress. Water ingress in highvoltage crosslinked polyethylene xlpe cable terminations. Analysis of a mv xlpe cable termination design with. Pdf interfacial improvement of xlpe cable insulation at. Cleaning cables clean all carbon deposits from mvhv primary cable insulation xlpe to prevent potential tracking by using suitable solvent or cable cleaning wipes. The cables to be tested can be overhead, in cable trays, in duct bank, or buried.
To connect a third or fourth cable pc 630 with soc 630 alternatively pc 630250 with soc 250 should be used. General condition assessment of xlpe and pilc cables the ef. First steps to reliability cable cleats, cable joints. Ain slipon indoor termination afn slipon outdoor termination. Jul 29, 2016 demonstration of the 3m cold shrink low voltage termination. First steps to reliability xlpe cable preparation controlling the initial installation costs of any power system is critical to operating companies and contractors alike. 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. Indoor outdoor terminations for 3 core xlpe armoured. 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. Xlpe cable preparation cable cleats, cable joints, cable. Xlpe cable withstands smaller radius bending and is lighter in weight, allowing for easy and reliable installation.
Hdc 630 base kit include material to connect 2 cables. Load losses in xlpe cables are primarily due to the ohmic losses in the conductor and the metallic screen. The cost of energy losses can be reduced by using a larger conductor. 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. Practical hv cable jointing and terminations for engineers.
Testing of high voltage cables manual horizon power 1st edition february 20 prepared by field practices. See the complete range of heat shrink cable terminations for high voltage cable installations this includes both 11kv33kv terminations for single and 3 core polymeric. Where the designer wishes to include a variation to a network standard or an alternative material or equipment to that currently approved the designer must obtain authorisation from the network standard owner before incorporating a variation to a network standard in a design. 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. Indoor outdoor terminations for 3 core xlpe armoured cables. How to make termination joint to the 11kv 3 core xlpe cable. Technical note voltage cable splicing and cable termination. Simple, safe installation installation no torches or heat required le. Wooden drum shall be properly seasoned sound and free from defects. Library card civil engineering laboratory high voltage cable splicing and cable termination techniques final, by david e. A complete termination normally consists of a gland and a seal assembly and, where plastic covered cable is used, a gland shroud.
It is not intended to be nor should it be used as authority for design, construction, or use of power cable. Analysis of a mv xlpe cable termination design with embedded. 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. Compact design for limited working access in cable end termination boxes 3m cold shrink 3 core polymeric cable terminations are suitable for both 6. Cable section with or without joint termination 2 no pressure test. Cable cable components 6 conductor 78 inner semiconductor shield 9 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.
The ends of lead sheathed cable shall be sealed with solder immediately after cutting the cables, in case of pvc cable suitable sealing compounds tape shrinkable. Article pdf available in ieee electrical insulation. Figure 9 singlecore 36 kv cable with xlpe insulafion, bonded insulafion screen, copper. Managing safety hazards in electric cable splicing and. Cable cabinet with possibilities to joint and toff 12 24 kv xlpeinsulated cable above ground. Mv cable accessories installation best practice pdf ensto. 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.
This publication is a collection of items of general information related to the subject of power cable. Itk coldshrinkable indoor termination otk coldshrinkable outdoor termination. How to make termination joint of 11kv 3 core xlpe cable this video is explains the complete procedure of cable termination joint. Xlpe cable insulation in the past is character ized by reduction of foreign substances by clean room procedure, voids by application of drytype curing methods, and protrusions. The material makes the difference te connectivity raychem cable. Pdf water ingress in highvoltage crosslinked polyethylene. Designs submitted shall be declared as fit for purpose. Cable termination using heat shrink terminations 33kv. 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. The cable is fed from the bottom of the reel so that its curvature is continuous with no reversed bends.
Jointmaster offers a comprehensive range of medium and high voltage cable terminations aimed at the local and export markets. Demonstration of the 3m cold shrink low voltage termination. Raychem power cable accessories have over 40 years of design life which has been proven by longterm ageing tests and as has been witnessed in the field. Testing of high voltage cables manual horizon power. Details make the difference the company polycab, an iso 9001. This becomes harmful to the cable splicer if heshe does not follow the relevant safety procedure.
Apr 30, 2018 cleaning cables clean all carbon deposits from mvhv primary cable insulation xlpe to prevent potential tracking by using suitable solvent or cable cleaning wipes. Termination procedure images mineral insulated cable. 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. System maintenance and repair are also substantial factors in overall cost. 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. 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.
Enhancing the reliability of cable networks cable accessories. Cable shall not be bent sharp to a small radius handling or installation, for cables the minimum bending radius for pvc xlpe cables shall be 12 times the overall diameter of cable. The development of high voltage xlpe cable systems goes back to the since then production and material technology have improved significantly, providing reliable and maintenancefree products to the utility industry. This offering applies to medium and highvoltage shielded power cable 525 kv xlpe cables and 5500 kv pilc cables with a maximum length of 1. At present, numerous high voltage xlpe cable systems with nominal voltages up to 500 kv and. The cost of energy losses can be reduced by using larger conductor. Power cable accessories under the wellestablished brand name raychem, raychem rpg offers a comprehensive range of cable accessories for almost all cable types. The supplied length of cable is not sufficient to perform the intended job, e. 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. Physical contact with cable conductors like copper and aluminium without adequate washing of hand before eating can cause a serious stomach upset 1. Screened separable connectors for terminating cable to equipment via standardised. Cable section with or without jointtermination 2 no pressure test.
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