• NBN EN 61325 : 1996

    Current The latest, up-to-date edition.


    Available format(s): 


    Published date:  12-01-2013

    Publisher:  Belgian Standards

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

    1 Section 1. General
    1 Scope
    2 Normative references
    3 Definitions
    Section 2. Insulators
    4 Insulator classes and type
    5 Insulating materials
    6 Specified characteristics and features of a d.c.
          insulator unit
    7 Identification of insulators
    Section 3. Classification of tests, sampling rules
    and procedures
    8 Classification of tests
    8.1 Type Tests
    8.2 Sample Tests
    8.3 Routine tests
    9 Quality assurance
    10 Procedures for type and sample tests
    10.1 Insulator selection for type tests
    10.2 Sampling rules and procedures for sample tests
    10.3 Re-test procedure for the sample tests
    Section 4. Test procedures for electrical tests
    11 General requirements for high-voltage tests
    12 Standard atmospheric conditions and correction
          factors for electrical tests
    12.1 Standard reference atmosphere
    12.2 Correction factors for atmospheric conditions
    13 Mounting arrangements for electrical tests
    14 Lightning impulse voltage tests
    14.1 Test procedure
    14.2 Acceptance criteria
    15 Dry d.c. voltage tests
    15.1 Test procedure
    15.2 Acceptance criteria
    16 SF6 puncture withstand test
    16.1 Test method
    16.2 Acceptance criteria
    17 Impulse overvoltage puncture
          withstand test
    18 Ion migration test
    18.1 Reference conditions used to calculate the
          expected charge
    18.2 Test validity
    18.3 Test procedure
    18.4 Acceptance criteria
    19 Electrical body resistance test
    19.1 Test procedure
    19.2 Acceptance criteria
    20 Thermal runaway test
    20.1 Duration
    20.2 Procedure
    20.3 Acceptance criteria
    21 Routine electrical test
    Section 5. Test procedures for mechanical and other tests
    22 Verification of the dimensions
    23 Electromechanical failing load test
    23.1 Test procedure
    23.2 Acceptance criteria
    23.3 Coefficient for type tests
    23.4 Coefficients for sample tests
    24 Mechanical failing load test
    24.1 Test procedure
    24.2 Acceptance criteria
    25 Thermal=-mechanical performance test
    25.1 Test procedure
    25.2 Acceptance criteria
    26 Residual mechanical strength test
    26.1 Previous tests
    26.2 Preparation of the test pieces
    26.3 Test procedure
    26.4 Test results
    26.5 Acceptance criteria for the type test
    26.6 Acceptance criteria for the sample test
    26.7 Comparison between type and sample test results
    27 Verification of the axial, radial and angular
    27.1 Test procedure
    27.2 Acceptance criteria for cap and pin insulators
    27.3 Acceptance criteria for long rod insulators
    28 Verification of the locking system
    28.1 Conformity of the locking device
    28.2 Verification of locking
    28.3 Position of the locking device
    28.4 Procedure for the operation test
    28.5 Acceptance criteria for the operation
    29 Temperature cycle test
    29.1 Test procedure for string insulator units composed
          of ceramic material
    29.2 Special test procedure for insulators with thick
          sections or very large insulators
    29.3 Complementary specifications
    29.4 Acceptance criteria
    30 Thermal shock test
    30.1 Test procedure
    30.2 Acceptance criteria
    31 Porosity test
    31.1 Test procedure
    31.2 Acceptance criteria
    32 Galvanizing test
    32.1 Test procedures
    32.2 Acceptance criteria
    33 Routine visual inspection
    33.1 Insulators with ceramic insulating parts
    33.2 Insulators with glass insulating parts
    34 Routine mechanical test
    35 Zinc sleeve test
    35.1 General requirements concerning the zinc sleeve
    35.2 Type test procedure
    35.3 Sample test procedure
    36 Zinc collar test
    36.1 General requirements for zinc collar
    36.2 Type and sample test procedure
    Section 6. Tests on string insulator units
    37 General
    A Method of comparison of the results of the
          electromechanical or mechanical failing load type
          and sample tests
    B Bibliography
    ZA (normative) Normative references to international
          publications with their corresponding European

    Abstract - (Show below) - (Hide below)

    Specifies: the characteristics of insulators; the conditions under which the specified value of these characteristics shall be verified; acceptance criteria. Applies to string insulator units of ceramic material or glass for use on d.c. overhead power lines with a nominal voltage greater than 1,000 V. Does not apply to composite insulators.

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

    Document Type Standard
    Publisher Belgian Standards
    Status Current
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