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          The scope of this guide is to describe the effects and impacts of high temperature operation on conductors, connectors, and conductor hardware. The guide will identify operating metrics which constitute elevated temperature operation based on present industry practices and its effects on overhead line components, and it will suggest potential mitigation options to manage or avoid identified adverse impacts.<br />\n
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          existing overhead transmission lines or designing new overhead transmission lines which will be operated at high temperatures. Although this guide is intended for overhead transmission lines, most of the discussion will also be applicable to distribution lines. Recently within the industry a number of new and novel conductors have been designed using non-traditional materials specifically designed for high temperature operation. The collection of new and novel conductors is identified in the industry as high temperature low sag (HTLS) conductors. These new conductors are typically formulated with either standard aluminum strands, fully annealed aluminum or aluminum alloys which resist annealing at 200 °C or greater, exotic core materials which result in minimal sag changes with increasing conductor temperature, and extremely robust connectors. While the general concepts and cautions presented in this guide are appropriate for broad considerations when designing with the HTLS conductors, this guide does not specifically address the HTLS conductors as they are supported with other documents. Rathere, this guide is limited to conventional conductors and connectors typically formulated with cold worked aluminum or copper with reinforcement achieved using steel galvanized or steel aluminum clad core strands. One notable exception is steel supported aluminum conductors (SSAC) developed in the late 1970s (Reynolds Metal) utilizing a galvanized steel core or aluminum-clad steel core and fully annealed aluminum strands. Modern versions of the SSAC conductor are referenced as aluminum conductors steel supported (ACSS) and typically carry a steel core of either misch metal or aluminum-clad steel core and fully annealed aluminum strands. The trend in most utilities today is to increase the capacity of their transmission lines wherever practical. It has become increasingly difficult to build new lines because of increased costs to obtain rights-of-way, public intervention, and state licensing requirements. These obstacles have significantly increased the cost and lead times required to place new lines into service. The lost revenue opportunities from power purchase/sale agreements with other systems because of limited transmission facilities can be substantial. Therefore, utilities are attempting to find as much capacity as is practical from the addition of new high capacity lines or modifying existing lines for operation at higher temperatures than the existing facilities.
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]

App\Twig\Components\ProductMostRecent {#128474
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    #code: "IEEE00000172"
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        #id: 28073
        #name: "IEEE C2:2002"
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        #description: """
          New IEEE Standard - Superseded.<br />\n
          This standard covers basic provisions for safeguarding of persons from hazards arising from the installation, operation, or maintenance of 1) conductors and equipment in electric supply stations, and 2) overhead and underground electric supply and communication lines. It also includes work rules for the construction, maintenance, and operation of electric supply and communication lines and equipment. The standard is applicable to the systems and equipment operated by utilities, or similar systems and equipment, of an industrial establishment or complex under the control of qualified persons. This standard consists of the introduction, definitions, grounding rules, list of referenced and bibliographic documents, and Parts 1, 2, 3, and 4 of the 2002 Edition of the National Electrical Safety Code.<br />\n
          \t\t\t\t<br />\n
          A. These rules cover supply and communication lines, equipment, and associated work practices employed by a public or private electric supply, communications, railway, or similar utility in the exercise of its function as a utility. They cover similar systems under the control of qualified persons, such as those associated with an industrial complex or utility interactive system. B. The NESC covers utility facilities and functions up to the service point. NOTE: The National Electrical Code (NEC), NFPA 70-1999 covers utilization wiring requirements beyond the service point. C. NESC rules cover street and area lights (supplied by underground or overhead conductors) under the exclusive control of utilities (including their authorized contractors) or other qualified persons (such as those associated with an industrial complex). NOTE: Luminaries not under such exclusive control are governed by the requirements of the NEC. D. NESC rules do not cover installations in mines, ships, railway rolling equipment, aircraft, or automotive equipment, or utilization wiring except as covered in Parts 1 and 3.<br />\n
          The purpose of these rules is the practical safeguarding of persons during the installation, operation, or maintenance of electric supply and communication lines and associated equipment.<br />\n
          These rules contain the basic provisions that are considered necessary for the safety of employees and the public under the specified conditions. This code is not intended as a design specification or as an instruction manual.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "National Electrical Safety Code 2002 Edition"
        -notes: "Superseded"
      }
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    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#128302 …}
    #channels: Doctrine\ORM\PersistentCollection {#128295 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
    #reviews: Doctrine\ORM\PersistentCollection {#128299 …}
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      date: 2001-08-01 00:00:00.0 Europe/Paris (+02:00)
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    -coreDocument: "C2"
    -bookCollection: ""
    -pageCount: 324
    -documents: Doctrine\ORM\PersistentCollection {#128308 …}
    -favorites: Doctrine\ORM\PersistentCollection {#128306 …}
  }
  +label: "Historical"
  +icon: "historical"
  -mostRecentAttributeCode: "most_recent"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}