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AS 2374.5-1982

AS 2374.5-1982

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Power Transformers Ability To Withstand Short-Circuit

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

17-05-2018

Language(s)

English

Published date

09-08-1982

Publisher

Standards Australia

1 - AS 2374, Part 5-1982 POWER TRANSFORMERS - ABILITY TO WITHSTAND SHORT-CIRCUIT
4 - PREFACE
4 - CONTENTS
5 - SECTION 1. SCOPE AND DEFINITIONS
5 - 1.1 SCOPE.
5 - 1.2 DEFINITIONS.
6 - SECTION 2. REQUIREMENTS WITH REGARD TO ABILITY TO WITHSTAND SHORT-CIRCUIT
6 - 2.1 GENERAL.
6 - 2.2 OVERCURRENT CONDITIONS.
6 - 2.2.1 Transformers with Two Separate Windings.
6 - 2.2.2 Transformers with more than Two Windings and Autotransformers
7 - 2.2.3 Booster Transformers.
7 - 2.2.4 Transformers Directly Associated with Other Apparatus
7 - 2.2.5 Special Transformers.
7 - 2.2.6 Tap-changing Equipment.
7 - 2.2.7 Neutral Terminals.
8 - SECTION 3. DEMONSTRATION OF ABILITY TO WITHSTAND SHORT-CIRCUIT
8 - 3.1 THERMAL ABILITY TO WITHSTAND SHORT-CIRCUIT.
8 - 3.1.1 General.
8 - 3.1.2 Value of the Symmetrical Short-circuit Current I for Transformers with Two Windings
8 - 3.1.3 Duration of the Symmetrical Short-circuit Current I
8 - 3.1.4 Maximum Permissible Value of the Highest Average Temperature
8 - 3.1.5 Calculation of the Temperature
8 - 3.1.6 Value of the Symmetrical Short-circuit Current I for Transformers with more than Two Windings and Autotransformers
9 - 3.2 DYNAMIC ABILITY TO WITHSTAND SHORT-CIRCUIT.
9 - 3.2.1 General.
9 - 3.2.2 Condition of the Transformer before the Short-circuit Tests.
9 - 3.2.3 Peak Value l^ for Two-winding Transformers.
9 - 3.2.4 Value and Duration of the Short-circuit Test Current for Two-windings Transformers
10 - 3.2.5 Short-circuit Testing Procedure for Transformers with Two Windings.
10 - 3.2.6 Detection of Faults.
12 - APPENDIX A - MODIFIED SHORT-CIRCUIT TEST PROCEDURES FOR CATEGORY I TRANSFORMERS

Specifies the design of power transformers as defined in AS 2374.1, and the requirements necessary both in regard to their ability to withstand short-circuit and the means of demonstrating that ability. Based on IEC 76-5.

Committee
EL-008
DocumentType
Standard
ISBN
0 7262 2641 6
Pages
8
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes
UnderRevision

This standard specifies the design of power transformers as defined in AS 2374, Part 1, and the requirements necessary both in regard to their ability to withstand short-circuit and the means of demonstrating that ability.NOTES:1. Pending the publication of a standard that applies to dry-type transformers*, the requirements of this standard may be applied to dry-type transformers subject to agreement between the purchaser and the manufacturer and taking into account the principles established in Sections 2 and 3.2. A reduced schedule of short-circuit tests may be applied to Category I transformers by agreement between purchaser, manufacturer and testing authority. Guidance on the reduced schedule is given in Appendix A.

Reconfirmed 1987

AS 60146.1.1-2002 Semiconductor converters General requirements and line commutated converters - Specifications of basic requirements
AS/NZS 2081.5:2002 Electrical equipment for coal and shale mines - Electrical protection devices - Earth-fault current limiters
AS 60076.1-2005 Power transformers General (IEC 60076-1, Ed. 2.1 (2000) MOD)
AS 2735-1984 Dry-type power transformers
AS 2832.1-2004 Cathodic protection of metals Pipes and cables
AS 1265-1990 Bushings for alternating voltages above 1000 V
AS/NZS 60137:2008 Insulated bushings for alternating voltages above 1000 V (IEC 60137, Ed. 5.0 (2003) MOD)
AS 2326.2-1991 On-load tap-changers - Application guide
AS/NZS 2081:2011 Electrical protection devices for mines and quarries (Reconfirmed 2022)
AS 2374.1-1997 Power transformers General
AS/NZS 4871.3:2002 Electrical equipment for coal mines, for use underground Substations
AS 61800.2-2004 Adjustable speed electrical power drive systems General requirements - Rating specifications for low voltage adjustable frequency a.c. power drive systems (Reconfirmed 2016)
AS 2832.2-2003 Cathodic protection of metals Compact buried structures
AS 61330-2005 High-voltage/low-voltage prefabricated substations
AS 2374.7-1997 Power transformers Loading guide for oil-immersed power transformers
AS/NZS 4871.3:2010 Electrical equipment for mines and quarries Substations
AS 1028-1992 Power reactors and earthing transformers

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Hardcopy - English
PDF 1 User - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
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