Medium voltage mv accessories catalog prysmian group north. Identify the causes of splice and termination failures. High voltage cable splicing training the electricity forum. Individual splices are capable of joining cables of. Count on 3m to support your application with comprehensive technical support throughout the installation process. The following details are required for calculation. Indeed may be compensated by these employers, helping keep indeed free for jobseekers. High voltage cables are required to be terminated in a manner that reduces electrical stresses at the termination point, or spliced in a. The shield must be grounded for the cable to perform these functions. We provide the highest quality service in a timely and cost effective manner.
Cable dielectric provides sufficient insulation to allow testing. Stepbystep on how to install a medium voltage splice using 3m cold shrink qsiii splice kit and 3m mechanical shearbolt connectors qci series. When the various layers are removed, cuts should extend only partially. For this reason it is common practice to cut off a portion of cable after pulling to assure an undamaged end. History of cable systems objective 2 to present the evolution of cables in time to understand the lessons from the past. Along with our specialized line of equipment and expertise in all phases of electrical work, our commitment to safety and timely response is our trademark. Splicing and terminating of portable cables general cable. Inspect exposed sections of cables for physical damage. The tag must be made of brass or 304 stainless steel, approximately 114 diameter and with numbers a minimum 14inch high. Splicing high voltage cable splicing of high voltage electrical cables is required to maintain the electrical continuity of the conductor and shields and to maintain the insulation levels of the two electrical cables joined together.
High voltage xlpe cable systems techincal user guide brugg cables page 6 2. Concurrent high voltage testing on different sections of sheath on the same cable. Shop for splice kits medium voltage from platt electric supply. When the various layers are removed, cuts should extend only partially through the layer.
The table below has the earth fault duty of the hv cables used by ergon energy. Industry supported programs that are developed and administered on a national basis, will go far in establishing levels of competency that meet the needs of industry and the public for safe and. Semi conducting tape heat shrink splice kit description, for primary cables, and instructions for, primary kv underground heat shrinkable xlpe cable splice. Splices and terminations, which are always a vital part of any cable system, become more susceptible to failure at higher voltages. Provide a ground path for leakage and fault currents. Practical hv cable jointing and terminations for engineers. Apr 24, 2019 stepbystep on how to install a medium voltage splice using 3m cold shrink qsiii splice kit and 3m mechanical shearbolt connectors qci series. For this reason, it is common practice to cut off a portion of cable after pulling to assure an undamaged end. For installations from 120 v to 1 kv, 3m offers several low voltage splice.
The okonite company maintains an instock inventory of many of the products. Splices glossary of splicing terms glossary of splicing terms splice a splice may be considered as two or more conductors joined with a suitable connectorreinsulated, reshielded and rejacketed with compatible materialsapplied over a properly prepared surface. New high voltage cable splicer careers are added daily on. Unlike high voltage cables which do not have set values for the insulation thickness, the thickness of the insulation around a conductor in a medium voltage cable is set at specified levels according to international standards. Cable splicing certification electrical training alliance. Transworld electric is proud of our electricians that successfully completed the electrical maintenance course. Osha safety requirements regarding medium voltage cable splicing and termination. Splicing and terminating of portable cables figure 1 jacket insulation connector shield component insulation buildup a c d b shielded cable general procedures and techniques as a general rule, the higher the voltage rating of a system, the lower the margin of safety of that system. Cable splicer shall have a minimum of 2000 hours experience with terminating and installing medium voltage cable. The cable will now turn, mainly in the connecting area, and the straight cores will twist to. High voltage cables are required to be terminated in a manner that reduces electrical stresses at.
Great prices fast shipping is a stocking distributor of cable prep tools by speed systems, ripley, klein, and greenlee. The contractor shall submit a list of all terminations completed for the. Conductor shield 15 with no conductor shield, electric field lines are concentrated, creating high stress points at the conductorinsulation interface. The master catalog contains 7 sections with different types of cable, ranging from single conductor low voltage cables to medium voltage cables and beyond. It is manufactured in exactly the same way as extruded dielectric cable. Technical note voltage cable splicing and cable termination. High voltage xlpe cable systems technical user guide. Indeed ranks job ads based on a combination of employer bids and relevance, such as your search terms and other activity on indeed. Compare cable data with drawings and specifications. Cable testing using a dc hipot from 5kv35kv to prooftest terminations and splices performed in workshop.
High quality utility tools enable the efficient and precise stripping and removal of medium and high voltage power cable constructions including xlpe, epr, pilc and aerial cables pictured below is a 33kv cable compliant with iec 60 5022 showing the typical construction of mediumhigh voltage cables which can be. Medium high voltage cable preparation it is necessary to begin with a good cable end. Pencilling preparation a student performs the cable pencilling in preparation for the 3 conductor sweat onto the practice cable splice. Some splices may be displayed multiple times since they can be used at various voltage levels, insulation levels and conductor sizes. High voltage underground transmission cable systems. How to install a medium voltage splice with shearbolts.
Our 2day high voltage cable splicing training course examines the components of high voltage terminations and demonstrates how high voltage terminations are made. High voltage cable splicing and cable termination techniques see other formats ad a030872 technical note n1452 high voltage cable splicing and cable termination techniques by david e. High voltage dry type outdoor termination view pdf. Safe work practices on high voltage cables revision no. The splicing and termination of underground electrical distribution cable requires that the integrity of cable conductor. Cable diagnostic focused initiative cdfi phase ii, released february 2016 2 5 2. Highvoltage cables of differing types have a variety of applications in instruments, ignition systems, and alternating current. Concurrent high voltage testing on sections of the cable sheath and work on the main conductor of the cable.
Mediumhigh voltage cable preparation it is necessary to begin with a good cable end. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Inspect bolted electrical connections for high resistance using one of the following methods. A mobile trailer structure designed, constructed and equipped to provide a completely selfcontained facility for the environmental control necessary in the splicing and servicing of high voltage underground cable installations. High voltage cable splicing and termination mfi polytechnic. Whether splicing or terminating is accomplished by the use of handapplied tapes, a filled or molded device, heatshrinkable tubing, or a. How to install a medium voltage splice with shearbolts youtube. High voltage cable preparation it is necessary to begin with a good cable end.
Mv cable accessories installation best practice pdf ensto. A high voltage insulated cable circuit consists of. All books are in clear copy here, and all files are secure so dont worry about it. For high voltage applications ranging from 69 kv to 145 kv class, 3m offers cold shrink cable joints and splices. There are over 25 high voltage cable splicer careers waiting for you to apply. Provides for a smooth interface between the conductor and the insulation finite.
The elaspeed splice is quick and easy to install, saving time and cost over alternative methods. Low to high voltage cable splicing and terminations. Cold shrink offers a universal fit for cable joints that can be customized for your application. The manufacturers and nonnuclearpower users of medium voltage cable have since recognized that cables manufactured during the 1970s did not always meet service life expectations. Using specialised cable splicing tools including soldering irons, melting pots, pouring ladles, tallow wiping cloths, lead ringers, compound kettles, stearine candles and paraffin dippers to perfect the wipe. This is in contrast to an overhead line, which does not have insulation. Specialized hard to find tools in stock, buy from the experts at page. When the various layers are removed, cuts should extend only partially through the. Cable jointing tools manufactured by utility tool are used for medium and high voltage cable preparation, dressing and stripping of primary, secondary distribution and transmission lines and conductors utility tool is a brand of ripley for wire and cable jointing tools preferred by mvhv cable jointers, splicers, substation engineers and linesmen. The core is constructed from ethylene propylene rubber epr on a vertical. All cable terminations andor splicing must be tagged with the installers tamu identification number and the date of the work performed. Here are a few options for splicing wires depending on application bad options splicing any high voltage conductor in an open manner or in way that is not specifically rated.
Primary insulation for building stress cones on cables up to 35kv on all solid dielectric cables. The three larger h, ip and i 35kv splices are supplied with high permittiv. A highvoltage cable hv cable is a cable used for electric power transmission at high voltage. Safe knifework requires a steady hand, cool concentration and the manual dexterity of a surgeon. Primary electrical insulation for splicing cable from 600v to 69kv on all solid dielectric cables. If the cables cannot be set straight with each other, jointing work should not go ahead.
These cables are spliced by joining the two conductors. The manufacturers and nonnuclearpower users of medium voltage cable have since recognized that cables manufactured. Guy dake is stts president, chief cable splicer, and estimator. The rated voltage of a medium voltage cable is determined by the thickness of the insulation. Tapping into an existing cable is one of the reasons for splicing. A key to good cable preparation is the use of sharp, high quality tools. Please enter all information to narrow selection choices and always check the cable insulation o. High quality installation work performed by abb certified field personnel is essential for achieving the low. With over 35 years in business and an impressive listing of projects completed, we are the bay areas leading source of services ranging from new primary and secondary installations to the repair and maintenance of medium to high voltage electrical distribution systems.
The splicing kits have a high degree of mechanical strength for physical protection of connections and provide moistureresistant insulation in above ground or direct burial applications. Weems august 1976 sponsored by naval facilities engineering command approved for public release. A cable includes a conductor and insulation, and is suitable for being run underground or underwater. This course provides the instructional and handson training necessary for proper installation of cable splices and terminations. Medium voltage cables used in nuclear power plants were expected to have very long lives, at least the 40 years of the initial licensed period. Much has been written on the competency and the workmanship of individuals performing medium voltage cable splicing work. Splicing of high voltage trailing cables ma009en index. Qtii and qtiii cold shrink silicone rubber is specifically formulated as a high trackresistant material with hydrophobicity water. Ethylene propylene rubber based highvoltage splicing tape. For highvoltage applications ranging from 69 kv to 145 kv class, 3m offers cold shrink cable joints and splices. Utility tools, high voltage cable tools, lv mv hv 33kv. The national cable splicing certification board was created in 2004 with representatives from utilities, contractors, manufacturers, organizations, cable splicers, and others who are interested in affirming the knowledge, skills, and abilities of workers who splice and terminate electrical power cables.
Contains voltage between the conductor and ground must be clean. In most cases get a ul rated connector and make the connection inside a ul nema rated rated box or assembly. Splicing wires bad, good, better, best hvac school. Energy high voltage cable accessories up to 245 kv understanding the value of high voltage cable accessories as essential elements in a cable system since the foundation of raychem in 1957, we have specialized in the development, design, manufacture and installation of cable accessory products. Tape splices when you want the versatility of tape, scotch cable splicing kits are the answer for almost any application, regardless of cable type or size. Qtii and qtiii cold shrink silicone rubber is specifically formulated as a high trackresistant material with hydrophobicity water repelling action to virtually ensure a long life expectancy. Apply to cable splicer, customer service technician, low voltage technician and more. Cable layout and system design the dimensioning of a high voltage cable system is always based on the specifications and demands of the project at hand. Medium voltage mv accessories catalog linking accessories to cable solutions. Abb xlpe land cable systems 5 design, installation and testing installation of xlpe cable systems installation of cable systems includes trenching, cable pulling, clamping of cable, cable splicing as well as mounting of accessories.
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