• I.S. EN 61660-1:1999

    Current The latest, up-to-date edition.

    SHORT-CIRCUIT CURRENTS IN D.C. AUXILIARY INSTALLATIONS IN POWER PLANTS AND SUBSTATIONS - CALCULATION OF SHORT-CIRCUIT CURRENTS

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-1999

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    1 General
      1.1 Scope and object
      1.2 Normative references
      1.3 Definitions
      1.4 Symbols and subscripts
    2 Calculation of short-circuit currents
      2.1 General
      2.2 Calculating methods
      2.3 Resistance and inductance of conductor
      2.4 Rectifier
      2.5 Battery
      2.6 Capacitor
      2.7 DC motor with independent excitation
    3 Calculation of the total short-circuit current
      3.1 Correction factor
      3.2 Superimposing the partial short-circuit currents at
          the short-circuit location
      3.3 Standard approximation function
    Annex A (informative) Equations for the calculation of
            lambda[D], kappa[D], kappa[C] and t[pC]

    Abstract - (Show below) - (Hide below)

    Specifies method for calculating short-circuit currents in d.c. auxiliary systems in power plants and substations, which can be equipped with the following equipment, acting as short-circuit current sources: - rectifiers in three-phase a.c. bridge connection for 50 Hz; - d.c. motors with independent excitation. Also provides a generally applicable method of calculation which produces results of sufficient accuracy on the conservative side.

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    Development Note For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 60038:2009 IEC standard voltages
    IEC 60896-1:1987 Stationary lead-acid batteries - General requirements and methods of test. Part 1: Vented types
    IEC 60050-151:2001 International Electrotechnical Vocabulary (IEV) - Part 151: Electrical and magnetic devices
    IEC 60050-441:1984 International Electrotechnical Vocabulary (IEV) - Part 441: Switchgear, controlgear and fuses
    EN 61660-2 : 1997 SHORT-CIRCUIT CURRENTS IN D.C. AUXILIARY INSTALLATIONS IN POWER PLANTS AND SUBSTATIONS - CALCULATION OF EFFECTS
    IEC 61660-2:1997 Short-circuit currents in d.c. auxiliary installations in power plants and substations - Part 2: Calculation of effects
    EN 60896-1:1991/A2:1992 STATIONARY LEAD-ACID BATTERIES - GENERAL REQUIREMENTS AND METHODS OF TEST - VENTED TYPES
    HD 472 S1:1989/AC:2013 NOMINAL VOLTAGES FOR LOW-VOLTAGE PUBLIC ELECTRICITY SUPPLY SYSTEMS
    IEC 60909:1988 Short-circuit current calculation in three-phase a.c. systems
    HD 533 : 200S1 SHORT-CIRCUIT CALCULATION IN THREE-PHASE A.C. SYSTEMS
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