• I.S. EN 61881:2000

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.


    Available format(s):  Hardcopy, PDF

    Superseded date:  15-02-2011

    Language(s):  English

    Published date:  01-01-2000

    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)

    1 General
          1.1 Scope and object
          1.2 Normative references
          1.3 Definitions
          1.4 Service conditions
    2 Quality requirements and tests
          2.1 Test requirements
          2.2 Classification of tests
          2.3 Capacitance and tan d measurements (routine
          2.4 Capacitor loss tangent (tan d) measurement
                 (type test)
          2.5 Voltage test between terminals
          2.6 AC voltage test between terminals and case
          2.7 Test of internal discharge device
          2.8 Sealing test
          2.9 Surge discharge test
          2.10 Thermal stability test
          2.11 Self-healing test
          2.12 Resonance frequency measurement
          2.13 Environmental testing
          2.14 Mechanical testing
          2.15 Endurance test
          2.16 Destruction test
          2.17 Disconnecting test on fuses
    3 Overloads
          3.1 Maximum permissible voltage
    4 Safety requirements
          4.1 Discharge device
          4.2 Case connections
          4.3 Protection of the environment
          4.4 Other safety requirements
    5 Markings
          5.1 Marking of the units
    6 Guide to installation and operation
          6.1 General
          6.2 Choice of rated voltage
          6.3 Operating temperature
          6.4 Special service conditions
          6.5 Overvoltages
          6.6 Overload currents
          6.7 Switching and protective devices
          6.8 Choice of creepage distance and clearance
          6.9 Connections
          6.10 Parallel connections of capacitors
          6.11 Series connections of capacitors
          6.12 Magnetic losses and eddy currents
          6.13 Guide for fuse and disconnector protection
    Annex A (informative) Waveforms
    Annex B (normative) Operational limits of capacitors with
                        sinusoidal voltages as a function of
                        frequency and at maximum temperature
    Annex C (normative) Resonance frequency measuring methods
                        - Examples
    Annex D (informative) Bibliography
    Figure 1 - Destruction test arrangement
    Figure 2 - N source d.c. plus a.c.
    Figure 3 - N source d.c.
    Figure A.1 - Example of current pulse width
    Figure B.1 - Supply conditions
    Figure C.1 - Measuring circuit
    Figure C.2 - Relation between the voltage across the
                 capacitor and the supply frequency
    Figure C.3 - Discharge current wave shape
    Table 1 - Maximum temperature of cooling medium for unlimited
    Table 2 - Test voltage between terminals
    Table 3 - Damp heat test
    Table 4 - Testing the robustness of terminals
    Table 5 - Example of current-carrying capacities of screw
              terminals and bolts
    Table 6 - Endurance test
    Table 7 - Maximum permissible voltage
    Annex ZA (normative) Normative references to international
                         publications with their corresponding
                         European publications

    Abstract - (Show below) - (Hide below)

    Provides capacitors used below an operating frequency of 2500 Hz with a rated voltage limited to 10000 V.

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

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By
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