Skip to content
CSA Store
  • CSA Group
  • CSA OnDemandâ„¢
  • CSA Communities
  • Contact Us
  • Catalogue
    • Browse By Subject Area

      • Electrical
      • Fuels & Transportation
      • Petroleum & Natural Gas
      • Environment & Natural Resources
      • Construction & Infrastructure
      • Mechanical & Industrial Equipment
      • Nuclear
      • Health Care and Well-being
      • Worker & Public Safety
      • Management Systems
    • Browse By Publisher

      • ASME
      • ASTM
      • CSA Group
      • ESA
      • IEC
      • ISO
      • NRC
      • ORNAC
      • TSSA
    • ICS Catalogue

      • Browse by International Classification of Standards (ICS Codes)
  • Subscription
    • Browse By Subject Area

      • Electrical
      • Fuels & Transportation
      • Petroleum & Natural Gas
      • Environment & Natural Resources
      • Construction & Infrastructure
      • Mechanical & Industrial Equipment
      • Nuclear
      • Health Care and Well-being
      • Worker & Public Safety
      • Management Systems
    • CSA Subscriptions

      • Overview
      • Collections
    • ICS Catalogue

      • Browse by International Classification of Standards (ICS Codes)
  • Services
Cart Icon0
×
Login / Register
English / CAD

Language

en

fr

Currency

CAD

USD

  • CSA Group
  • CSA OnDemandâ„¢
  • CSA Communities
  • Contact Us
Wishlist

Catalogue

  • Browse By Subject Area

    • Electrical
    • Fuels & Transportation
    • Petroleum & Natural Gas
    • Environment & Natural Resources
    • Construction & Infrastructure
    • Mechanical & Industrial Equipment
    • Nuclear
    • Health Care and Well-being
    • Worker & Public Safety
    • Management Systems
  • Browse By Publisher

    • ASME
    • ASTM
    • CSA Group
    • ESA
    • IEC
    • ISO
    • NRC
    • ORNAC
    • TSSA
  • ICS Catalogue

    • Browse by International Classification of Standards (ICS Codes)

Subscription

  • Browse By Subject Area

    • Electrical
    • Fuels & Transportation
    • Petroleum & Natural Gas
    • Environment & Natural Resources
    • Construction & Infrastructure
    • Mechanical & Industrial Equipment
    • Nuclear
    • Health Care and Well-being
    • Worker & Public Safety
    • Management Systems
  • CSA Subscriptions

    • Overview
    • Collections
  • ICS Catalogue

    • Browse by International Classification of Standards (ICS Codes)

Services

Menu toggle Icon
Login / Register
English / CAD

Language

en

fr

Currency

CAD

USD

Wishlist Cart (
)

Search Section

    • Home
    • ICS
    • Telecommunications. Audio And Video Engineering
    • Electromagnetic Compatibility (Emc)
    • Emission
    • IEC TR 61000-3-13:2008

    Codes & Standards - Purchase

    IEC TR 61000-3-13:2008

    Electromagnetic compatibility (EMC) - Part 3-13: Limits - Assessment of emission limits for the connection of unbalanced installations to MV, HV and EHV power systems
    SKU: iec_004145_039097 Published by IEC Publication Year 2008 1.0 Edition 41 pages

    Product Details

    • Overview
    This part of IEC 61000 provides guidance on principles which can be used as the basis for determining the requirements for the connection of unbalanced installations (i.e. three-phase installations causing voltage unbalance) to MV, HV and EHV public power systems (LV installations are covered in other IEC documents). For the purposes of this report, an unbalanced installation means a three-phase installation (which may be a load or a generator) that produces voltage unbalance on the system. The connection of single-phase installations is not specifically addressed, as the connection of such installations is under the control of the system operator or owner. The general principles however may be adapted when considering the connection of single-phase installations. The primary objective is to provide guidance to system operators or owners on engineering practices, which will facilitate the provision of adequate service quality for all connected customers. In addressing installations, this document is not intended to replace equipment standards for emission limits. The report addresses the allocation of the capacity of the system to absorb disturbances. It does not address how to mitigate disturbances, nor does it address how the capacity of the system can be increased. Since the guidelines outlined in this report are necessarily based on certain simplifying assumptions, there is no guarantee that this approach will always provide the optimum solution for all unbalanced load situations. The recommended approach should be used with flexibility and judgment as far as engineering is concerned, when applying the given assessment procedures in full or in part. The system operator or owner is responsible for specifying requirements for the connection of installations which may cause unbalance on the system. The disturbing installation is to be understood as the complete customer's installation (i.e. including balanced and unbalanced parts). Problems related to unbalance fall into two basic categories.
    - Unbalanced installations that draw negative-sequence currents which produce negative-sequence voltages on the supply system. Examples of such installations include arc furnaces and traction loads (typically connected to the public network at HV), and three phase installations where the individual loads are not balanced (typically connected at MV and LV). Negative-sequence voltage superimposed onto the terminal voltage of rotating machines can produce additional heat losses. Negative-sequence voltage can also cause non-characteristic harmonics (typically positive-sequence 3rd harmonic) to be produced by power converters.
    - Unbalanced installations connected line-to-neutral can also draw zero-sequence currents which can be transferred or not into the supply system depending on the type of connection of the coupling transformer. The flow of zero-sequence currents in a grounded neutral system causes zero-sequence unbalance affecting line-to-neutral voltages. This is not normally controlled by setting emission limits, but rather by system design and maintenance. Ungrounded-neutral systems and phase-to-phase connected installations are not, however, affected by this kind of voltage unbalance. This report gives guidance only for the coordination of the negative-sequence type of voltage unbalance between different voltage levels in order to meet the compatibility levels at the point of utilisation. No compatibility levels are defined for zero-sequence type of voltage unbalance as this is often considered as being less relevant to the coordination of unbalance levels compared to the first type of voltage unbalance. However, for situations where a non-zero impedance exists between neutral and earth with the system still being effectively grounded (i.e., where the ratio between zero-sequence, X0 and positive sequence reactance X1 is 0 < X0/X1 = 3), this type of voltage unbalance can be of concern especially when the type of connection of the coupling transformer allows zero-sequence path to flow from MV to LV and vice-versa. This Technical Report has the status of a basic EMC publication in accordance with IEC Guide 107. The contents of the corrigendum of April 2010 have been included in this copy.

    Buy

    Language

    Radio input

    Format

    Radio input
    • FAQs
    • Contact Us
    • Email Product

    GST REG No R119441681
    QST REG No R1006017360

    Compare Formats

    Determine the subscription format that is right for you.

    Features CSA AdvantageTM CSA OnDemandTM
    Offline access
    Full-text search
    Create highlights and personal notes
    Newest editions added automatically
    Includes all supported languages and archive versions
    My Files - create customized files by adding multiple clauses, tables or figures from the standard into your own personal File for quick reference
    Toggle between your files and the full standard to maintain context
    Instantly preview cross referenced material within the book
    Export personal notes to Excel
    Transfer notes and highlights when updates are available
    Adobe Reader PDF and browser compatible for iOS and Android
    Web, Android, iOS Compatible

    Follow Us On Social Media

    Get Our Newsletter

    Get CSA Newsletter

    • About CSA Store
    • Subscription
    • Services
    • Catalogue
    • FAQ
    • Return Policy
    • FULFILLMENT DETAILS
    • EBOOK SUPPORT
    • Product Updates
    • Contact Us
    • CSA GROUP
    • CSA COMMUNITIES
    • CSA Update Service
    • About CSA Store
    • Subscription
    • Services
    • Catalogue
    • FAQ
    • Return Policy
    • FULFILLMENT DETAILS
    • EBOOK SUPPORT
    • Product Updates
    • Contact Us
    • CSA GROUP
    • CSA COMMUNITIES
    • CSA Update Service

    • General Terms and Conditions
    • Privacy Policy
    • Accessibility
    © 2022 Canadian Standards Association. All rights reserved
    logo close
    Privacy Preference Centre

    Please manage your cookie choices by switching the consent toggles on or off under the Purposes below.

    You may change your preference at any time as described in our Cookie Policy

    • Cookie Settings
    • List of Cookies
    close
      Cookies on CSA Group

      We use Cookies to create a secure and effective website experience for our customers. For more information about Cookies and how you can disable Cookies, visit our privacy policy page. Learn More

      Free Login/Registration Required

      View Access for this document is only available for viewers in Canada.

      A free user account is required to view this document.

      Login or Register