Standard
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AS 1033.2-1988
[Current]Applies to all types of powder-filled high voltage current limiting fuses designed for service indoors and outdoors on a.c. systems of rated voltages exceeding 1000 volt and in high voltage a.c. equipment. Includes service conditions, definitions ratings, standard conditions of use and behaviour, and the specification of characteristic.
Published: 05/02/1988
Pages: 36
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
PREFACE
1 SCOPE AND GENERAL
1.1 SCOPE
1.2 REFERENCED DOCUMENTS
1.3 SERVICE CONDITIONS
2 DEFINITIONS
2.1 GENERAL
2.2 ELECTRICAL CHARACTERISTICS
2.3 FUSES AND THEIR COMPONENT PARTS
2.4 ADDITIONAL TERMS
3 RATINGS AND STANDARD CONDITIONS OF USE AND BEHAVIOUR
3.1 RATINGS
3.1.1 Rating characteristics
3.1.2 Rated voltage
3.1.3 Rated current of a fuse-holder
3.1.4 Rated acceptable power of a fuse-holder
3.1.5 Reference current of a fuse-link
3.1.6 Rated current of a fuse
3.1.7 Rated breaking current
3.1.8 Rated frequency
3.1.9 Rated insulation level (of a fuse-holder)
3.1.10 Rated minimum breaking current
3.1.11 Rated transient recovery voltage (TRV)
3.1.11.1 General
3.1.11.2 TRV waveform
3.1.11.3 Representation of rated TRV
3.1.11.4 Standard values of rated TRV
3.2 STANDARD CONDITIONS OF USE AND BEHAVIOUR
3.2.1 Breaking characteristics
3.2.1.1 General
3.2.1.2 Standard conditions of use with respect to breaking capacity
3.2.1.3 Standard conditions of behaviour with respect to breaking capacity
3.2.2 Time/current characteristics
3.2.2.1 General
3.2.2.2 Fuse-links for transformer circuit applications
3.2.2.3 Fuse-links for motor circuit applications
4 TYPES TESTS
4.1 CONDITIONS FORTYPE TESTS
4.2 LIST OF TYPE TESTS
4.3 TEST PRACTICES COMMON TO ALL TYPE TESTS
4.4 DIELECTRIC TESTS
4.4.1 Test practices
4.4.2 Application of test voltage for impulse and power-frequency tests
4.4.2.1 General
4.4.2.2 Tests between terminals and all earthable metal parts
4.4.2.3 Tests between terminals
4.4.3 Atmospheric conditions
4.4.4 Test voltages
4.4.4.1 Lightning impulse voltage dry tests
4.4.4.2 Power-frequency voltage dry tests
4.4.4.3 Power-frequency wet tests
4.5 TEMPERATURE-RISE AND POWER-DISSIPATION TESTS
4.5.1 Tests to be carried out
4.5.2 Test practices
4.5.2.1 General
4.5.2.2 Test sample
4.5.2.3 Arrangement of the equipment for test
4.5.2.4 Test procedure
4.5.3 Measurement of temperature
4.5.3.1 General
4.5.3.2 Temperature of fuse parts
4.5.3.3 Ambient air temperature
4.6 BREAKING TESTS
4.6.1 Test practices
4.6.1.1 General
4.6.1.2 Description of tests to be made
4.6.1.3 Characteristics of the test circuits
4.6.1.4 Arrangement of the equipment
4.6.2 Test procedure
4.6.2.1 Calibration of the test circuit
4.6.2.2 Test method
4.6.2.3 Alternative test methods for Test Duty 3
4.6.2.4 Interpretation of oscillograms
4.6.2.5 Parameters to be used for tests
4.6.3 Breaking tests for fuse-links of a homogeneous series
4.6.3.1 Characteristics of fuse-links of a homogeneous series
4.6.3.2 Test requirements
4.6.3.3 Interpretation of breaking tests
4.6.4 Acceptance of a homogeneous series of fuse-links by interpolation
4.6.5 Extension of the principle of homogeneous series to fuse-links of different lengths
4.6.5.1 General
4.6.5.2 Special requirements
4.6.5.3 Tests to be made
4.7 TESTS FOR TIME/CURRENT CHARACTERISTICS
4.7.1 Test practices
4.7.2 Test procedures
4.7.3 Time/current withstand tests of fuse-links for motor circuit applications
4.7.3.1 General
4.7.3.2 Test sequence No 1
4.7.3.3 Test sequence No 2
4.7.3.4 Interpretation of the test results
4.8 OIL-TIGHTNESS TEST
4.9 TEST OF STRIKERS
4.9.1 General
4.9.2 Strikers to be tested
4.9.3 Striker operation tests
4.9.4 Test requirements
4.9.5 Test for striker energy
4.9.6 Test for withstand force
4.9.7 Coordination tests
5 SPECIAL TESTS
5.1 CONDITIONS FOR MAKING THE TESTS
5.2 LIST OF SPECIAL TESTS
5.3 THERMAL SHOCK TESTS
5.3.1 Test sample
5.3.2 Arrangement of the equipment
5.3.3 Test method
5.4 WEATHERPROOF TEST
5.5 POWER DISSIPATION TESTS
5.6 RADIO-INTERFERENCE VOLTAGE (RIV) TEST
6 SPECIFICATIONS FOR CURRENT-LIMITING (POWDER-FILLED) FUSES
6.1 TEMPERATURE-RISE LIMITS
6.2 SWITCHING-VOLTAGES
6.3 TIME CURRENT CHARACTERISTICS
6.4 K FACTOR OF FUSE-LINKS FOR MOTOR CIRCUIT APPLICATIONS
6.5 WITHSTAND REQUIREMENTS OF FUSE-LINKS FOR MOTOR CIRCUIT APPLICATIONS
6.6 CUT-OFF CHARACTERISTICS
6.7 I2t CHARACTERISTICS
6.8 MECHANICAL CHARACTERISTICS OF STRIKERS
6.9 MARKING AND INFORMATION TO BE GIVEN TO THE PURCHASER
6.9.1 Identifying markings
6.9.2 Markings on the fuse-holder
6.9.3 Markings on the fuse-link
6.9.4 Information to be made available to the purchaser
6.9.5 Information to be given to the purchaser of fuse-links for motor circuit applications
6.9.6 Information to be given to the purchaser of fuse-links for transformer circuit applications
APPENDIX A
A1 INTRODUCTION
A2 DRAWING THE ENVELOPE
A3 DETERMINATION OF PARAMETERS
APPENDIX B
APPENDIX C
APPENDIX D
APPENDIX E
APPENDIX F
Cited references in this standard
AS 1544
Methods for impact tests on metals, Part 1: Izod (AS 1544.1)
AS 1852
International electrotechnical vocabulary 1852(441)—Switchgear, controlgear and fuses
AS 1931
High voltage testing techniques, Part 1: General definitions, test requirements, test procedures, and measuring devices (AS 1931.1)
[Superseded]
High voltage a.c. switchgear and controlgear — Circuit breakers for rated voltages above 1000 V
Content history
[Superseded]
[Superseded]
IEC 60282-1
DR 86019
AS 1033.2-1988 REC:2018
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