• AS 60044.2-2003

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Instrument transformers - Voltage transformers

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  30-06-2017

    Language(s):  English

    Published date:  01-01-2003

    Publisher:  Standards Australia

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

    1 - AS 60044.2-2003 INSTRUMENT TRANSFORMERS - SINGLE-PHASE INDUCTIVE VOLTAGE TRANSFORMERS (IEC 60044-2:1997, MOD)
    4 - PREFACE
    6 - CONTENTS
    9 - 1 General
    9 - 1.1 Scope
    9 - 1.2 Normative references
    10 - 2 Definitions
    10 - 2. 1 General definitions
    10 - 2.1.1 Instrument transformer
    10 - 2.1.2 Voltage transformer
    10 - 2.1.3 Unearthed voltage transformer
    11 - 2.1.4 Earthed voltage transformer
    11 - 2.1.5 Primary winding
    11 - 2.1.6 Secondary winding
    11 - 2.1.7 Secondary circuit
    11 - 2.1.8 Rated primary voltage
    11 - 2.1.9 Rated secondary voltage
    11 - 2.1.10 Actual transformation ratio
    11 - 2.1.11 Rated transformation ratio
    11 - 2.1.12 Voltage error (ratio error)
    11 - 2.1.13 Phase displacement
    12 - 2.1.14 Accuracy class
    12 - 2.1.15 Burden
    12 - 2.1.16 Rated burden
    12 - 2.1.17 Output
    12 - 2.1.18 Highest voltage for equipment
    12 - 2.1.19 Rated insulation level
    12 - 2.1.20 Isolated neutral system
    12 - 2.1.21 Solidly earthed neutral system
    13 - 2.1.22 Impedance earthed (neutral) system
    13 - 2.1.23 Resonant earthed (neutral) system
    13 - 2.1.24 Earth fault factor
    13 - 2.1.25 Earthed neutral system
    13 - 2.1.26 Exposed installation
    13 - 2.1.27 Non- exposed installation
    13 - 2.1.28 Rated frequency
    13 - 2.1.29 Rated voltage factor
    13 - 2.1.30 Measuring voltage transformer
    14 - 2.2 Additional definitions for single- phase inductive protective voltage transformers
    14 - 2.2.1 Protective voltage transformer
    14 - 2.2.2 Residual voltage winding
    14 - 3 General requirements
    14 - 4 Normal and special service conditions
    14 - 4.1 Normal service conditions
    14 - 4.1.1 Ambient air temperature
    14 - 4.1.2 Altitude
    14 - 4.1.3 Vibrations or earth tremors
    14 - 4.1.4 Other service conditions for indoor voltage transformers
    15 - 4.1.5 Other service conditions for outdoor voltage transformers
    15 - 4.2 Special service conditions
    15 - 4.2.1 Altitude
    16 - 4.2.2 Ambient temperature
    16 - 4.2.3 Earthquakes
    16 - 4.3 System earthing
    16 - 5 Ratings
    16 - 5.1 Standard values of rated voltages
    16 - 5.1.1 Rated primary voltages
    16 - 5.1.2 Rated secondary voltages
    17 - 5.2 Standard values of rated output
    17 - 5.3 Standard values of rated voltage factor
    18 - 5.4 Limits of temperature rise
    19 - 6 Design requirements
    19 - 6.1 Insulation requirements
    19 - 6.1.1 Rated insulation levels for primary windings
    21 - 6.1.2 Other requirements for primary winding insulation
    23 - 6.1.3 Between- section insulation requirements
    23 - 6.1.4 Insulation requirements for secondary windings
    23 - 6.1.5 Requirements for the external insulation
    23 - 6.1.6 Requirements for radio interference voltage (RIV)
    23 - 6.2 Short- circuit withstand capability
    24 - 6.3 Mechanical requirements
    24 - 7 Classification of tests
    25 - 7.1 Type tests
    25 - 7.2 Routine tests
    25 - 7.3 Special tests
    25 - 8 Type tests
    25 - 8.1 Temperature- rise test
    26 - 8.2 Short- circuit withstand capability test
    26 - 8.3 Impulse test on primary winding
    26 - 8.3.1 General
    27 - 8.3.2 Lightning impulse test
    27 - 8.3.3 Switching impulse test
    28 - 8.4 Wet test for outdoor type transformers
    28 - 8.5 Radio interference voltage measurement
    30 - 9 Routine tests
    30 - 9.1 Verification of terminal markings
    30 - 9.2 Power- frequency withstand tests on primary windings and partial discharge measurement
    30 - 9.2.1 General
    31 - 9.2.2 Windings having U
    31 - 9.2.3 Windings having U
    32 - 9.2.4 Partial discharge measurement
    32 - 9.3 Power- frequency withstand tests between sections and on secondary windings
    33 - 10 Special tests
    33 - 10.1 Chopped impulse test on primary winding
    33 - 10.2 Measurement of capacitance and dielectric dissipation factor
    33 - 10.3 Mechanical tests
    34 - 11 Markings
    34 - 11.1 Rating plate markings
    35 - 11.2 Terminal markings
    35 - 11.2.1 General rules
    35 - 11.2.2 Terminal identifiers
    35 - 11.2.3 Relative polarities
    35 - 12 Accuracy requirements for single-phase inductive measuring voltage transformers
    35 - 12.1 Accuracy class designation for measuring voltage transformers
    36 - 12.1.1 Standard accuracy classes for measuring voltage transformers
    36 - 12.2 Limits of voltage error and phase displacement for measuring voltage transformers
    36 - 12.3 Type tests for accuracy of measuring voltage transformers
    36 - 12.4 Routine tests for accuracy of measuring voltage transformers
    36 - 12.5 Marking of the rating plate of a measuring voltage transformer
    37 - 13 Additional requirements for single-phase inductive protective voltage transformers
    37 - 13.1 Accuracy class designation for protective voltage transformers
    37 - 13.1.1 Standard accuracy classes for protective voltage transformers
    37 - 13.2 Limits of voltage error and phase displacement for protective voltage transformers
    37 - 13.3 Rated voltages for secondary windings intended to produce a residual voltage
    38 - 13.4 Output for secondary windings intended to produce a residual voltage
    38 - 13.4.1 Rated output
    38 - 13.4.2 Rated thermal limiting output
    38 - 13.5 Accuracy class for secondary windings intended to produce a residual voltage
    38 - 13.6 Type tests for protective voltage transformers
    38 - 13.6.1 Temperature- rise test for residual voltage windings
    39 - 13.6.2 Tests for accuracy
    39 - 13.7 Routine tests for protective voltage transformers
    39 - 13.7.1 Tests for accuracy
    39 - 13.8 Marking of the rating plate of a protective voltage transformer

    Abstract - (Show below) - (Hide below)

    Specifies requirements and tests for single-phase inductive voltage transformers.

    Scope - (Show below) - (Hide below)

    This part of IEC 44 applies to new inductive voltage transformers for use with electrical measuring instruments and electrical protective devices at frequencies from 15 Hz to 100 Hz. Although this standard relates basically to transformers with separate windings, it is also applicable, where appropriate, to auto-transformers. This standard does not apply to transformers for use in laboratories. NOTE Requirements specific to three-phase voltage transformers are not included in this standard but, so far as they are relevant, the requirements in Clauses 3 to 11 apply to these transformers and a few references to them are included in those clauses (e.g. see 2.1.4, 5.1.1, 5.2, and 11.2). Clause 13 covers the requirements and tests, in addition to those in Clauses 3 to 12, that are necessary for single-phase inductive protective voltage transformers. The requirements of Clause 13 apply particularly to transformers which are required to have sufficient accuracy to operate protective systems at voltages that occur under fault conditions.

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

    Committee EL-013
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as part of AS C45-1928.Second edition 1950.AS C45-1950 revised and redesignated in part as AS 1243-1972.Second edition 1982.AS 1243-1982 revised and redesignated in part as AS 60044.2-2003. First published as part of AS C45-1928. Second edition 1950. AS C45-1950 revised and redesignated in part as AS 1243-1972. Second edition 1982. AS 1243-1982 revised and redesignated in part as AS 60044.2-2003.

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

    AS 62052.11-2005 Electricity metering equipment (AC) - General requirements, tests and test conditions Metering equipment (IEC 62052-11, Ed.1.0 (2003) MOD)
    AS 60044.5-2004 Instrument transformers Capacitor voltage transformers
    AS 62271.203-2005 High-voltage switchgear and controlgear Gas-insulated metal-enclosed switchgear for rated voltages above 52 kV (IEC 62271-203, Ed. 1.0 (2003) MOD)
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