Voltage 5 kv, 8 kv, 15 kv, 2528 kv 35 kv lugstem connector included in kit no packaging 1 kit per case one termination per kit order no. They are lightweight, giving you the options of freehanging or bracketmounted arrangements, and that is why the qt stands for quick termination. A cone to relieve stress is generally used because silicone. Ac withstand, 1 minute, kv 35 50 65 90 dc withstand, 15 minutes kv 65 75 105 140 partial discharge min. Primary insulation for building stress cones on all types of solid dielectric insulated cables up to 35 kv bus bar insulation. As the core is removed, the stressrelief tube and housing shrink onto. Distribution shrinkfit terminations ranger2 terminations. Stress cones are required on shielded cables in medium voltage systems 2. Raychem heatshrinkable medium voltage terminations ixsu. Top connections can also be made to bus duct or roof bushings. Both stress cones were developing corona underneath the.
Raychem cold shrinkable termination csticsto for polymeric. For help with splice kit, cold shrink, 15 kv, works with various types of shielded cables from 3m. The unique stepcore design combined with the built in hik stress control and. These are basically stress cones housed in a porcelain or copolymer housing that is filled with compound to eliminate air. The extralong stress cone aids in correct positioning and integrated voidfilling mastic eliminates the need for silicone grease. Range conductor size 5 kv conductor size 8 kv conductor size 15 kv conductor size 2528 kv conductor size 35 kv 7642t110 05400741764 110 kv 12. Medium voltage termination selector 3m united states. Stress relief the r2t and r2it terminations provide electric stress control for the cable by means of a flexible tube with a high permittivity dielectric constant. These are available through the local 3m electrical products division representative. Mv cable accessories installation best practice pdf ensto.
High voltage xlpe cable systems techincal user guide. Deadbreak connectors fully submersible cable connection eaton. A stress cone is used when terminating a medium to high voltage cable to prevent insulation failure. Very often the material is a semiconductor that gradually dissipates the lines of electric stress across its length. The stressrelief tube is preassembled on the core under the polymer housing. We have the porcealen mount, lugs to cable, the stress cone to elevate the immense flux which is made of this grey putty i dont know its composition. For example, reserving an insulation distance more than 100 mm for a 15 kv power cable is required. The material makes the difference te connectivity raychem cable. Available from 5kv to 8kv, connect, ground, splice, terminate and protect underground cable. Stress cone class 3 cable insulation diameter in inches 1. The bushings shall be pressuremolded cycloaliphatic epoxy with a 1. Why are terminations required on shielded medium voltage.
Shielded mv cables are usually larger in diameter than nonshielded cables and also require the use of stressrelief terminations that take up even more space. The need or bulky stress cones and unnecessary length is eliminated, requiring less space in tight termination locations. Features conforms to the ieee standard 48 class 1 requirements for 5, 8, 15, 2528 and 35 kv terminations onepiece, and twopiece inverted skirted, versatile designs, allowing quick. Offering a wide variety of separable connectors, cable joints, cable terminators and other cable accessory products that have been designed and tested per application portions of ieee, ansi, and other industry standards. Cables for 3000 and 6000 volts exist, but the majority of cables are used from 10 kv and upward. Cable cabinet with possibilities to joint and toff 12 24 kv xlpeinsulated cable above ground. Figure 1 illustrates an actual computerized stress plot of the 3m cold shrink qt. In twohigh arrangements with stacked circuit breakers, steel barriers separate the compartments and isolate the primary. Medium voltage terminations general information about heatshrinkable terminations 3. Housing only connector option add a connector cable support bracket option add a cable support bracket distribution shrinkfit terminations ranger2 terminations type outdoor r2t indoor r2it kv code 15 kv 15 2528 kv 28 35 kv 35 cable type concentric neutraljacketed. Sealing mastic for the lug end is built into the expanded termination eliminating the need for additional sealing tapes. Technical guide advance 27 27 kv medium voltage, metal. Hvt series terminations 535kv class high voltage termination.
The hik stress over the entire surface of the insulator. Techniques for proper usage of c tape are contained in standard and special prints available though the 3m system for splicing and terminating program. Deadbreak connectors fully submersible cable connection. Products related to 5514a splice kit, cold shrink, 15 kv, works with various types of shielded cables or visit the 3m site. The idea is to reduce the stress on that insulation gradually and this is what the putty or tapebuildup in a stress cone do. Eaton s cooper power series deadbreak connector systems meet the need for a deadfront underground installation in main and lateral feeders. Customers also have the flexibility of top or bottom cable entry. The stress relief tube is preassembled on the core under the polymer housing. Michael hammons applications engineer amercable inc. Those of 10 to 33 kv are usually called medium voltage cables, those over 50 kv high voltage cables. Get medium voltage electrical jobs done faster with a termination kit from 3m. High voltage xlpe cable systems technical user guide.
The temperature rise is minimal, but the problems are very serious. I dont have a complete understanding of each component of this cable. Raychem heatshrinkable medium voltage terminations ixsufoxsuf. Without a stress cone, the high voltages electrical field would curl back at the termination point and melt the insulation. 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. Safegear arc resistant switchgear, 5 and 15 kv, up to 50 ka. Every shielded medium voltage conductor requires terminations at both ends, but why. They provide a completely shielded, deadfront, fully submersible cable connection for mediumvoltage apparatus, including transformers, switchgear and large motors. Some 5 kv electrical equipment, especially motors, have very limited space for attaching the power cables. Wet kv corona extinction 25 kv class 16 kv phasetoground 150 kv bil 1. Silicone rubber insulators, epdm stress control tubes, stress controlling compound and. The extralong stress cone aids in correct positioning and.
Why are terminations required on shielded medium voltage cables. Features conforms to the ieee standard 48 class 1 requirements for 5, 8, 15, 2528 and 35 kv terminations onepiece, and twopiece. Medium voltage underground cables 4 cable l cable power circuit design 7 n conductor 78 n conductor screen 8 n insulation 8 n insulation screen 89 n metallic screen 910 n outer protective sheath 1011 l table of cable elements 12 l cable constructions l cable drums 14 l cable tests following production 15 accessories l introduction 16 l connectors and lugs 16. High voltage is defined as any voltage over volts. The kits are designed for terminating solid dielectric shielded power cable rated 5 35 kv, with tape shield, wire shield and unishield constructions.
The bushings shall be pressuremolded cycloaliphatic epoxy with a 0. As the core is removed, the stress relief tube and housing shrink onto. Technical guide advance 27 27 kv medium voltage, metalclad. Figure 1, cross section of a highvoltage cable, 1 conductor 3 insulation 2 and 4. Technical guide safegear hd 515 kv, 63 ka arc resistant high. Raychem medium voltage termination hvt 5 kv 35 kv broad range of standard indoor and outdoor kits for all plastic cable types, including armored cable easy installation with a single technique which eliminates retrainingeven on armored cable hvt erminat tion emt sys may be installed upright or inverted and can bend. In 28 kv, the connector type no is only for insulation range 2 and 4. A 15 kv power cable is designed typically to have a pe dielectric layer of thickness at least 4 mm.
In laymans terms the limit of my understanding, when the cable is stripped to expose the shield, it must be stripped enough so that the shield can be pulled back away from the terminal by some distance determined by voltage level and stress cone type. Stress cones for polymeric cables are made of flexible rubber and are commonly incorporated. The beginning of the end for 5 kv nonshielded cables. This kit is for connecting underground cable to transformers, switchgear and junctions that come with loadbreak bushings. Categories products low voltage products and systems installation products cable accessories and apparatus cable accessories. Teams of 3m scientists, chemists, engineers, electricians and technicians work together with manufacturing, quality control, sales and distribution to deliver high quality products products that resolve complex problems and are easy to use. Distribution shrinkfit terminations ranger2 terminations b3. These thermograms represent two different cases of defective stress cones. Click add to cart to buy 3m 5514a splice kit, cold shrink, 15 kv, works with various types of shielded cables. Rg220 and highvoltage feedthrough mounted on a kicker chamber. This kit is rated for 5 to 15 kv, 200 amp applications. When the tubing is shrunk down, the coating softens and sticks to irregular surfaces, providing moisture seals as well as electrical stress control. Click add to cart to buy 3m 5514a splice kit, cold shrink, 15 kv, works with various types of. These devices are used for highvoltage overhead wires, industrial wiring.
Within this range, the common rated voltages of european networks are 10 kv and 11 kv u m 12 kv. Our mediumvoltage cable is manufactured with copper conductor constructions with a metallic shield of annealed copper tape, leadfree insulation, and a flame retardant pvc jacket. Therefore, the necs new shielded cable requirement is likely to magnify the. Technical guide safegear hd 515 kv, 63 ka arc resistant. Raychem cold shrinkable termination csticsto for polymeric insulated cables up to 24 kv bene. For use indoors and within enclosed equipment outdoors. Potheads for 69kv and higher may also incorporate internal capacitors for additional stress grading. The 35mtgi terminators and 35msc stress cones are rated for class 2 and class 3 indoor service respectively. This stress control layer is based on ceramic semiconductor technology zno and provides superior discharge and impulse performance. The principal functions of the insulation shield system. The hik stress control tube eliminates bulky stress cones, making the termination. Safegear arc resistant switchgear, 5 and 15 kv, up to 50 ka, utilizing the advac or amvac circuit breaker safegear hd arc resistant switchgear, 5 and 15 kv, 63 ka.