• SN EN 60947-3 : 1999 AMD 1 2001

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 3: SWITCHES, DISCONNECTORS, SWITCH-DISCONNECTORS AND FUSE-COMBINATION UNITS

    Available format(s): 

    Superseded date:  27-11-2021

    Language(s): 

    Published date:  12-01-2013

    Publisher:  Swiss Standards

    Sorry this product is not available in your region.

    Add To Cart

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

    1 General
        1.1 Scope
        1.2 Normative references
    2 Definitions
    3 Classification
        3.1 According to the utilization category
        3.2 According to the method of operation of
              manually operated equipment
        3.3 According to suitability for isolation
        3.4 According to the degree of protection provided
    4 Characteristics
        4.1 Summary of characteristics
        4.2 Type of equipment
              4.2.1 Number of poles
              4.2.2 Kind of current
              4.2.3 Number of positions of the main
                       contacts (if more than two)
        4.3 Rated and limiting values for the main circuit
              4.3.1 Rated voltages
              4.3.2 Currents
              4.3.3 Rated frequency
              4.3.4 Rated duty
              4.3.5 Normal load and overload
                      characteristics
              4.3.6 Short-circuit characteristics
        4.4 Utilization category
        4.5 Control circuits
        4.6 Auxiliary circuits
        4.7 Relays and releases
        4.8 Vacant
        4.9 Switching overvoltages
    5 Product information
        5.1 Nature of information
        5.2 Marking
        5.3 Instructions for installation, operation and
              maintenance
    6 Normal service, mounting and transport conditions
    7 Constructional and performance requirements
        7.1 Constructional requirements
        7.2 Performance requirements
              7.2.1 Operating conditions
              7.2.2 Temperature rise
              7.2.3 Dielectric properties
              7.2.4 Ability to make and break under no-load,
                      normal load and overload conditions
              7.2.5 Ability to make, break or withstand
                      short-circuit currents
              7.2.6 Switching overvoltages
              7.2.7 Additional performance requirements for
                      equipment suitable for isolation
              7.2.8 Vacant
              7.2.9 Overload requirements for equipment
                      incorporating fuses
        7.3 Electromagnetic compatibility
              7.3.1 Vacant
              7.3.2 Immunity
              7.3.3 Emission
    8 Tests
        8.1 Kind of tests
              8.1.1 General
              8.1.2 Type tests
              8.1.3 Routine tests
              8.1.4 Sampling tests
              8.1.5 Special tests
        8.2 Type tests for constructional requirements
        8.3 Type tests for performance
              8.3.1 Test sequences
              8.3.2 General test conditions
              8.3.3 Test sequence I: General performance
                      characteristics
              8.3.4 Test sequence II: Operational
                      performance capability
              8.3.5 Test sequence III: short-circuit
                      performance capability
              8.3.6 Test sequence IV: Conditional
                      short-circuit current
              8.3.7 Test sequence V: Overload performance
                      capability
        8.4 Electromagnetic compatibility tests
              8.4.1 Immunity
              8.4.2 Emission
        8.5 Special tests
    Annexes
    A (normative) Equipment for direct switching of a
        single motor
    B (informative) Items subject to agreement between
        manufacturer and user
    ZA (normative) Normative references to international
        publications with their corresponding European
        publications
    Figure 1 - Actuator applied force F
    Tables
    1 - Summary of equipment definitions
    2 - Utilization categories
    3 - Verification of rated making and breaking
          capacities (see 8.3.3.3) - Conditions for making
          and breaking corresponding to the various
          utilization categories
    4 - Verification of operational performance - Number
          of operating cycles corresponding to the rated
          operational current
    5 - Test circuit parameters for table 4
    6 - Immunity tests
    7 - Emission limits
    8 - Actuator test force
    9 - List of type tests applicable to a given equipment
    10 - Overall scheme of test sequences
    11 - Test sequence I: General performance
          characteristics
    12 - Dielectric test voltage corresponding to the
          rated insulation voltage
    13 - Test sequence II: Operational performance
          capability
    14 - Test sequence III: Short-circuit performance
          capability
    15 - Test sequence IV: Conditional short-circuit
          current
    16 - Test sequence V: Overload performance capability
    A.1 - Utilization categories
    A.2 - Rated making and breaking capacity conditions
    A.3 - Relationship between current broken /c and
          off-time for the verification of the rated making
          and breaking capacities
    A.4 - Operational performance conditions for making and
          breaking corresponding to several utilization
          categories
    A.5 - Verification of the number of on-load operating
          cycles - Conditions for making and breaking
          corresponding to several utilization categories

    Abstract - (Show below) - (Hide below)

    States the characteristics of the equipment; the conditions with which the equipment shall comply; the tests for confirming that these conditions have been met and the methods to be used for these tests; and the information to be made available by the manufacturer or to be marked on the equipment. Applies to disconnectors, switches, switch-disconnectors and fuse-combination units to be used in motor circuits and distribution circuits of which the rated voltage is not over 1,000 V a.c. or 1,500 d.c. Does not include the additional requirements needed for electrical apparatus for explosive gas atmospheres.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher Swiss Standards
    Status Superseded
    Superseded By
    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective