All bsi british standards available online in electronic and print formats. Analytical thermal rating method for cables installed in j. The international electrotechnical commission iec has released iec 6028731. For example, iec 341 is now referred to as iec 600341.
It should be noted that iec 6007611 refers to the average winding temperature rise while this part of iec 60076 refers mainly to the hotspot. This second edition cancels and replaces the first edition published in 1994, amendment 1. A copy of the license is included in the section entitled gnu free documentation license. Electrical installation handbook users the electrical installation handbook is a tool which is suitable for all those who are interested in electrical plants. This first edition constitutes a technical revision. For low voltage cable network of normal operation, it is advisable of a voltage drop of 35 %.
University of southampton research repository eprints soton. Mt 36mt 36 m i t f iec 60364maintenance of iec 60364553 cl 53153, clause 531 mt 37 maintenance of iec 60364553, clause 532 mt 38 maintenance of iec 60364553, clause 533 mt 39 maintenance of iec 60364553, clause 535 to 537 mt 40 maintenance of iec 6036. Iec 6028711 contains formulas for the calculation of the conductor resistance, the dielectric losses, the sheath and screen losses, and the armour losses. This standard pertains to the calculation of the current rating of electric cable. Iec 60287 is an analytical method for the calculation of the. This document relates to cables installed on the test ladder to achieve a nominal total volume of nonmetallic material of 7 lm of test sample.
Theparameters of the equivalent circuit are by using a. Related threads offer pdf seidels guide to physical examination, 8e mosbys guide to physica offer pdf the pocket spine, second edition crc 2014 by camden whitaker offer pdf pass the psa, 1e churchill livingstone 2014 by will brown bsc aci 310r guide to decorative concrete offer pdf spinal cord injury in the child and young adult mac keith press. Its theoretical background is a nehermcgrath model 2, which was generalized later by many authors, g. Iec60287 theory t cost calculations cost ties analysis sion conclusions y role beginner x x x x x x x x x x x testengineer x x x x x x x systemuser x x x x iec x x x x x x x decisionmaker x x x x x supervisor x x x x x x x x x x x x x 1. Iec 6028722 electric cables calculation of the current rating part 2. A method for calculating reduction factors for groups of cables in free air, protected from solar radiation. Current rating equations 100 % load factor and calculation of losses general.
Consolidated editions the iec is now publishing consolidated versions of its publications. Tube water section, where the j tube annulus is filled with sea water. Our filtering technology ensures that only latest iec 60287. International standard iec 600766 has been prepared by iec technical committee 14.
Iec 60287 is an analytical method for the calculation of the continuous. The international electrotechnical commission iec is the leading global organization that prepares and publishes international standards for all electrical, electronic and related technologies. University of southampton abstract faculty of engineering, science and mathematics school of electronics and computer science doctor of philosophy by james a pilgrim for the safe and e cient operation of power transmission systems, each system component must have an accurate current rating. Iec 60228 conductors of insulated cables 2004 iec 60229 tests on cable oversheaths which have a special protective function and are applied by extrusion 1982 iec 60287 electric cables. Current rating equations 100 % load factor and calculation of losses general this englishlanguage version is derived from the original bilingual publication by. Methods for rating directly buried high voltage cable circuits. Free download iec 6028721 pdf standard electric cables calculation of the current rating part 21. Electric cables calculation of the current rating part 2. Industry specifications, standards, and references the latest, aeicapproved dates of the specifications, standards, and references are listed in the table. Xlpe cable systems specified according to iec international.
Sizing conductors and selecting protection devices legrand. International electrotechnical commission standards. As from 1 january 1997 all iec publications are issued with a designation in the 60000 series. International standard iec 6028711 has been prepared by iec technical committee 20. At the same time, iec has also published iec 60076101. Iec 60287 current capacity of cables rated current myelectrical.
Pdf ampacity calculations for cables in shallow troughs. It is normal in your company to update and optimize separator. A laser product may consist of a single laser with or without a separate power supply or may incorporate one or more lasers in a complex optical, electrical, or mechanical system. The in particular nehermcgrath model relies on the thermal equivalent circuit technique. I do not have the soft cymcap but i try to download it. Keywords iec60287, ampacity, rating, unfavorable thermal envi ronment. Free download iec 60287 2 1 pdf standard from public digital library. Note the ambient temperature is the temperature of the surrounding medium under normal. 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. Iec 6007611 is the basis for contractual agreements and it contains the requirements and tests relating to temperaturerise figures for dry type power transformers during continuous rated loading. Petroleum community forum free discussion and education. This standard applies to power transformers part 10. T4 external thermal resistance free air adjusted for solar radiation, k. Tube air section, above the sea level but below the.
Part 1 of the iec standard 60287 covers current rating equations at 100% load factor and calculation of losses. Applicable to the conditions of steadystate operation of cables at all alternating voltages, and direct voltages up to 5 kv, buried directly in the ground, in ducts, troughs or in steel pipes, both with and without partial dryingout of the soil, as well as cables in air. Calculation of currents report on voting foreword 73119fdis i the iec international electrotechnical commission is a worldwide organization for standardization comprising all national electrotechnical committees iec national committees. Part 31 details operating conditions, particularly site reference conditions. A copy can be downloaded for personal noncommercial. Iec 60287 electrical cables calculation of the rating. Current rating equations 100 % load factor and calculation of losses. The normal rating method for tunnels where the cables are installed in air is that of. The international electrotechnical commission iec has released the second edition of iec 6007610. The international electrotechnical commission iec is a worldwide organization for standardization comprising. Iec shall not be held responsible for identifying any or all such patent rights. Iec 60287 series, and the values of current ratings for under. International iec standard 6028711 second edition 200612 electric cables calculation of the current rating part 11. This first edition of iec 600766 cancels and replaces the second edition of iec 60289 published in 1988.