Belted multiconductor shielded cables shall have a shielding consisting of carbon black semi conducting paper tapes. For decades, reliability problems continued to be associated with constructing longer cables at higher voltages. There are in principle two different types of paper insulated cables. Application mod code paper cable e 01 plastic cable e 02 te connectivity terminations for polymeric and mind paper insulated cables 7. This document will focus only on the tests that are of importance for field installers which are described as installation and maintenance tests.
Pak since the early 1920s, paper insulated lead covered pilc cable has been the standard for cable reliability. Cable sealing boxes for oil immersed transformers suitable for paper insulated lead sheathed cables for highest system voltages from. Follow the menu to view the pdf file shipments of aluminum insulated wire or to download the worksheet file xls format and cable shows a 12. It applies to all types of laminated power cable systems such as paper insulated, lead covered, pipetype, and pressurized cables that are intended for the transmission or distribution of ac electric power. Mind cable means mass impregnated nondraining type cable. High voltage xlpe cable systems techincal user guide brugg cables page 3 1. Individual reports can be accessed by choosing shipments of copper insulated wire and cable current industrial reports cir, clicking on increased by 17. Transmission and distribution paper insulated cables. Due to the presence of the oil and the deteriorative effect of water on the insulation properties, a lead covering is added over the insulation. The paperinsulated cable is jointed in the upper part of the. Answers to your wire and cable requirements are as close as the telephone. Cic cable in conduit for buried distribution sys tems. Easier splicing, terminating and installation paper insulated. Edm 44089603 page 1 of 3 distribution commissioning form dcf 2.
For 10 kv rated cables and up, semiconducting carbon black paper tapes over the insulation in single conductor cable. Pipe type cable milestones nshort length near philadelphia, 1932 ninstalled in 1935 in baltimore, md n17,000 circuit feet at 2 kv n675 mils of paper n200 psi using lower viscosity oil than for pilc nby 1954, more pipe type than self contained oilfilled in u. The following is a summary of insulation resistance ir testing commonly referred to as megger testing of low voltage cables rated less than 5 kv, recognized by nexans. This instruction covers the testing and commissioning of all replacements or new installations of high voltage paper insulated belted cable. Repair cable failures are less common than for overhead lines but they do occur. The highpressure oil prevents the formation of voids. Such migration of impregnating compound makes the paper insulation dry at the upper portion which creates voids and initiates ionization. Electricity network safety management system manual. If the ends of the cable are immersed for any period of time, however, the internal paper wrapping around the bare equipmentgrounding conductor.
Throughout the years, many innovations in design, processing and equipment have been. For jointing a paperinsulated 3core cable with an xlpeinsulated 1 or 3core cable with al or cu conductor 12 kv. The pipe is filled with insulation oil kept at a pressure of 1. Introduction this reference is intended to give a basic overview of insulating materials that can be used during high voltage withstand testing, in particular cable testing. Medium voltage paper insulated cables cbi african cables.
Ns129 11kv joints and terminations paper insulated. Manufacture of paper insulated cables paper insulated cable manufacture at aberdare cables is carried out in accordance with sans 97. Testing of hv cables supplementary information page 1 of 24 reference sp0407r02 ver 2 ergon energy corporation limited abn 50 087 646 062 1. Jointing of high voltage cable systems procedures and also their reliability during elastomeric joint body or into the xlpe cable. Vde 0278 rated pressure 0,3 mpa overpressure design the joint tube is a plasticcoated steel tube. Apply on any paperinsulated lead cable configuration singlephase triplexed pilc threephase sector or round pilc the sel pilc fault indicator fits on 2. The paper needs to be strong, elastic, uniform and. General information on high voltage cable systems 1. Insulated conductors for use at 600 volts or less shall conform to the provisions of table 3102b.
Impregnated paper insulated pipe type cables have proven to be most reliable in service life. Edm 44088591 page 1 of 3 distribution commissioning form dcf 2. Pilc cables are used in any circuit that requires the highest reliability, the longest uninterrupted service life, and where the greatest surge, impulse and ac dielectric strength is desired. Pvc insulated copper conductor flexible cable catalogue 2019 more than 99. Paper insulated lead cables pilc paper insulated cables paper insulated cables have been in use longer than any other type of cable insulation and, due to the reputation built up over the years, are still today a great favourite with engineers. History of paper insulated power cables ieee pes icc. Telecom infrastructures, copper pair cables, special cables, trunk cables, paper insulated with aluminium sheath main content main menu this site uses cookies so that we can provide you with the best user experience. Single conductor splice kits rated v and 15 kv allow inline splicing of pilc to pilc or. Pdf hvdc cables start playing a more and more important role in interconnecting national grids. At that time there were very few alternatives apart from the occasional trial installation or special application using pe or pvc insulation cable. For paper cables, manual lapping must be performed over the joint and any. For the baseline cable, electricity generation was top contributor to three impact categories. Dc cables insulated with jute in street pipes thomas edison 1890. Mineralinsulated copperclad cable is a variety of electrical cable made from copper conductors inside a copper sheath, insulated by inorganic magnesium oxide powder.
The main difference between the two is the type of fluid used for impregnation of the paper. Paper insulation nearliest paper cable 1872 nbell wire. In order to not become excessively thick the paper needs to be thin 3040 gm 2. Insulation resistance testing of low voltage cables in the. A normal power cable needs more insulation and therefore paper with higher paper density is used, normally 60190 gm 2.
Terminations for paper and polymeric insulated cables 1 kv. Cable sealing boxes for oil immersed transformers suitable for paper insulated lead sheathed cables for highest system voltages from 12 kv upto and including 36 kv by bureau of indian standards. Environmental, health and safety issues in the coated wire. Power cable systems high voltage cables the arteries of the power grid abb offers highvoltage power cable systems for underground and submarine applications.
A transmission cable may require 23 weeks sometimes longer to repair once the failure has. Paper insulated cables for power applications information from aberdare cables paper insulated cables have been in use longer than any other type of cable insulation and are still a favourite with engineers. Inverted type cable end boxes for outdoor terminations suitable for paper insulated cables, part i. Extensive experience in design, manufacture, testing and application of paper insulated cables enables expert, inplant cable inspection and inhouse testing. Bs 6480 specification for impregnated paper insulated. Standard terms awg american wire gauge, based on the cir cular mil system where 1 mil equals 0. European medium voltage power cables, xlpeinsulated. Paperinsulated cables with its construction online.
When selected properly and installed correctly, paper insulated cables can be relied upon to provide satisfactory and troublefree. The electrical behavior of insulating materials is influenced by temperature, time, moisture and other contaminants, geometric relationships, mechanical stress and electrodes, and frequency and magnitude of applied voltage. History of cable systems objective 2 to present the evolution of cables in time to understand. All wires, cables and cords shall also be plainly tagged or marked as. The recommended practices and procedures for direct voltage acceptance and maintenance testing of shielded, laminated, dielectricinsulated power cable systems rated 5 kv to 500 kv are presented in this guide. The wire and cable industry grew throughout the 1990s in response to the periods economic expansion and to meet the increased demand for wire and communications products. Ausgrid maintains a copy of this and other network standards together with updates and. Pvc insulated copper conductor flexible cable catalogue 2019. Termites and rodents cause extensive damage to paper, wood, plastic etc. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to.
These can only be ordered along with terminations by adding the mod code to the end of the part number. Pilc high voltage crosslinked polyethylene paperoil paperpolypropylene ppp sf6 gas. Because most of an underground cable system is inaccessible, fault location can slow the restoration process. The pilc cable consists of a copper conductor insulated with oilimpregnated paper. Transmission and distribution paper insulated cables for. A pipe type oil filled cable consists of three separate paper insulated screen cores installed in a steel pipe. In shielded multiple conductor cable, copper tapes intercalated with carbon black semiconducting paper. What do you mean by mind cable and where is it used. For both cmp cable alternatives, the production of insulation resin fep and jacketing resin pvc, were each top contributors to three impact categories.
For scff cables, insulating fluid low viscosity is used and for mi cables insulating mass high viscosity is used. In case of electrical installation, damaged caused by above pests may lead to short circuit which can become a. In paper insulated cable the impregnating oil compound has a tendency to drain or migrate when laid on step slopes. Test equipment is available to evaluated all voltage classes of laminar dielectric cables including cables insulated with varnish cambric tapes. We design, produce and install polymeric insulated cables for direct current dc or alternating current ac and massimpregnated, paperinsulated cables for dc. Xlpe insulated power cables universal cable m berhad was incorporated in 1967 as a private company testing procedures for xlpe cables.
Insulated wires, cables and cords of all kinds except paper insulated wire shall have a continuous distinctive marking so that their maker may be readily identified. Individual reports can be accessed by choosing shipments of copper insulated wire and cable current industrial reports cir, clicking on increased by 37. Is a cable is to be designed for use on kv, which insulation would you prefer. Bare grounding conductors are wrapped in paper to prevent contact with the insulated conductors. Annealed bare copper conductor, normal, compact round, or compact sectoral stranded, per astm b3. Pipe type cable systems have been the design choice for engineers selecting the maximum longterm reliability and overall cost effectiveness. Ferranti develops the concentric construction for cables. No pipe type cable systems have been decommissioned due to age or problems with the impregnated paper or lpp dielectric. Raychem terminations for polymeric and mind paper insulated. Until the 1980s, most of the mv cables installed by utilities and industry were paperinsulated type in which the insulation over the conductors is built. Selpilc underground paperinsulated leadcovered cable. Cable accessories 12 52 kv paperinsulated cables pilc table of content cable accessories cable accessories for paperinsulated cables pilc 1252 kv general accessories and tools universal clamps list of content alphabetical order. The telephone cables have a large number of conductors that are individually insulated.
Products power medium voltage cable paper insulated cable. The name is often abbreviated to micc or mi cable, and colloquially known as pyro because the original manufacturer and vendor for this product in the uk was a company called pyrotenax. Follow the menu to view the pdf file shipments of aluminum. Mv cable accessories installation best practice pdf ensto. Tests for vertical flame propagation for a single insulated wire or cable standard defines the procedure for testing the resistance to. Until the mid1960s, paper insulated cables were used all over the world for mv power circuits.
High voltage xlpe cable systems technical user guide. Oct 20, 2017 paper insulated lead cables pilc paper insulated cables paper insulated cables have been in use longer than any other type of cable insulation and, due to the reputation built up over the years, are still today a great favourite with engineers. The selpilc is compatible with singlephase triplexed and threephase sector or round pilcs from 2. Bs 6480 specification for impregnated paper insulated cables. Paper insulated lead sheath cable pilc cme wire and cable. Okonite paper insulated lead covered 3 c cable is recommended for use in underground ducts, direct buried, and aerially when lashed to a messenger. Bs 4579 specification for performance of mechanical and compression joints in electric cable and wire connections.
Metallised paper tape semiconducting carbon paper tapes applied in combination with metallised paper tapes over the core insulation. Selpilcs are applied on paperinsulated leadcovered cables pilcs in underground distribution systems. This instruction covers the testing and commissioning of all replacements or new installations of high voltage paperinsulated screened cable. Paperinsulated metallic sheathed cable, solid type. But now the position is quite different than before. For scff cables, insulating fluid low viscosity is used and for mi cables insulating mass high viscosity. The most significant issue was maintenance difficulties. It applies to all types of laminated power cable systems such as paper insulated, lead covered, pipetype, and pressurized cables that are intended for the transmission or distribution. See conductor size and operating voltages, and operating conductor temperature data below. Bare grounding conductors are wrapped in paper to prevent contact with the insulated. A global solutions provider, prysmian offers a wide range of integrated.
The tabulated test levels assume that the cable systems have an effectively grounded neutral system or a grounded metallic shield. Belted type, multicore cables up to and including ii kv grade by bureau of indian standards. Trunk cables, paper insulated with aluminium sheath nexans. It also provides fault indication on triplexed cable. Mv cable with xlpe insulation, 33 kv paper based paper based insulation is the oldest type of power cable insulation and is still used mainly for high voltage cables. Terminations for paper and polymeric insulated cables 1 kv cable the terminations are designed for 3 and 4core polymeric insulated cables with or without armour and 3 and 4core paper insulated cables including cables with reduced neutral conductor. Pilc, paper insulated, lead covered high voltage mains power cable. In comparison to pvc and paperinsulated cables, the advantage of xlpeinsulated medium voltage power cables is that they possess a low dielectric factor. The paper insulation is made up of layers of longfibred paper tapes made from highgrade wood pulp, the texture and quality of which are controlled carefully to eliminate imperfections. Paperinsulated lead covered cables pilcfundamentals. Okonite has been producing paper insulated cables from 15kv to 345kv at our paterson, nj plant since the early 1930s.
Pilc cable is comprised of paper strips wound over conductor with. The selpilcs splitcore design is quick and easy to install without disconnecting the cable. Our large inventories ensure that we will have the right stock when you need it, just in time for your. Electrical properties of polyolefins poly olefin structure and dielectric behavior. Whilst batt cables plc endeavours to ensure the information on the website, specification sheets and all other technical information is accurate, the information is for guidance only and it is subject to change without notice or liability. The one for plastic cable contains abrasive paper, string, cleaning tissues and plastic gloves. Exploring issues of cost and reliability dennis doss, general cable technical marketing director, electric utility i n the early 1900s, utilities and municipalities began putting mediumvoltage paperinsulated leadcovered cables and rubberinsulated lowvoltage cables in. But as load demands increased, environmental concerns grew and urban distribution systems aged, it became necessary to develop a new cable design. The main methods of testing paper insulated ac cable is to use hvdc to avoid the. Pdf electric fields in hvdc paperinsulated cables researchgate. A wide variety of paper insulated cable options are available to you, such as conductor material, type, and application.
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