• There are no items in your cart

AS 2735-1984

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Dry-type power transformers
Available format(s)

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

Superseded date

06-30-2017

Language(s)

English

Published date

01-01-1984

Preview

1 - AS 2735-1984 DRY-TYPE POWER TRANSFORMERS
4 - PREFACE
4 - CONTENTS
5 - SECTION 1. SCOPE AND GENERAL
5 - 1.1 SCOPE.
5 - 1.2 APPLICATION.
5 - 1.3 REFERENCED DOCUMENTS.
5 - 1.4 SERVICE CONDITIONS.
5 - 1.4.1 Normal service condi tions.
5 - 1.4.2 Provision for unusual service conditions.
5 - 1.5 DEFINITIONS.
6 - 1.5.1 General.
6 - 1.5.2 Terms relating to the containment of a dry-type transformer.
6 - 1.6 TAPPINGS AND CONNECTIONS.
6 - 1.6.1 General.
6 - 1.6.2 Tapping range.
6 - 1.6.3 Connections.
6 - 1.7 REQUIREMENTS WITH REGARD TO ABILITY TO WITHSTAND SHORT-CIRCUIT.
7 - SECTION 2. RATING
7 - 2.1 GENERAL.
7 - 2.2 RATED POWER.
7 - 2.3 PREFERRED VALUES OF RATED POWER.
7 - 2.4 OPERATION OF HIGHER THAN RATED VOLTAGE.
7 - 2.5 RATING PLATES.
7 - 2.5.1 General.
7 - 2.5.2 Information to be given in all cases.
7 - 2.5.3 Information to be given for sealed units only.
8 - SECTION 3. COOLING METHODS AND TEMPERATURE RISE
8 - 3.1 IDENTIFICATION ACCORDING TO COOLING METHOD.
8 - 3.1.1 Identification symbols.
8 - 3.1.2 Arrangement of symbols.
8 - 3.2 TEMPERATURE-RISE LIMITS.
8 - 3.2.1 Normal temperature-rise limits.
8 - 3.2.2 Reduced temperature rises for transformers designed for high cooling air temperatures or special air coding conditions.
8 - 3.2.3 Reduced temperature rises for transformers designed for high altitudes.
10 - SECTION 4. INSULATION LEVELS
10 - 4.1 INSULATION LEVELS.
10 - 4.1.1 General.
10 - 4.1.2 Transformers for use at high altitudes.
11 - SECTION 5. TESTS
11 - 5.1 GENERAL REQUIREMENTS FOR TYPE, ROUTINE AND SPECIAL TESTS.
11 - 5.1.1 General.
11 - 5.1.2 Measurement of winding resistance (routine test)
11 - 5.1.3 Measurement of voltage ratio and check of voltage vector relationship (routine test).
11 - 5.1.4 Measurement of impedance voltage (principal tapping) short-circuit impedance and load loss (routine test).
11 - 5.1.5 Measurement of no-load loss and current (routine test).
11 - 5.1.6 Separate-source voltage withstand test (routine test).
11 - 5.1.7 Induced overvoltage withstand test (routine test).
11 - 5.1.8 Lightning impulse test (type test).
11 - 5.1.9 Partial discharge measurement.
12 - 5.1.10 Temperature-rise test (type test).
13 - 5.1.11 Winding temperature-rise correction for reduced current.
13 - 5.1.12 Determination of constant temperature conditions.
13 - 5.2 MEASUREMENT OF SOUND LEVEL (SPECIAL TEST).
13 - 5.3 SHORT-CIRCUIT TEST (SPECIAL TEST).
13 - 5.4 MEASUREMENT OF ZERO SEQUENCE IMPEDANCE (SPECIAL TEST).
13 - 5.5 TOLERANCES.
14 - SECTION 6. ENCLOSURES
14 - 6.1 DEGREE OF PROTECTION PROVIDED BY ENCLOSURES.
15 - APPENDIX A - INFORMATION REQUIRED WITH ENQUIRY AND ORDER
15 - A1 RATING AND GENERAL DATA.
15 - A1.1 Normal.
15 - A1.2 Special.
16 - A2 PARALLEL OPERATION.
16 - A3 TESTS.
17 - APPENDIX B - UNUSUAL ENVIRONMENTAL CONDITIONS

Specifies requirements for dry-type power transformers (including autotransformers) having highest voltage for equipment values up to and including 36 kV. This Standard should be read in conjunction with AS 2374, Power transformers. Where Australian Standards do not exist for other particular power transformers, This Standard may be applicable as a whole or in parts.

This standard specifies requirements for dry-type power transformers (including auto-transformers) having highest voltage for equipment values up to and including 36 kV.The following small and special dry-type transformers are not covered by this standard:(a) Single-phase transformers rated at less than 1 kV.A and polyphase transformers rated at less than 5 kV.A.(b) Instrument transformers (covered by AS 1243 and AS 1675).(c) Transformers for semiconductor converters (AS 1955).(d) Starting transformers.(e) Testing transformers.(f) Traction transformers mounted on rolling stock.(g) Flameproof transformers.(h) Welding transformers.(j) Voltage regulating transformers.(k) Small power transformers in which safety is a special consideration.Where Australian standards do not exist for the transformers mentioned above or for other special transformers, this standard may be applicable as a whole or in parts.

Committee
EL-008
DocumentType
Standard
ISBN
0 7262 3510 5
Pages
13
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes
UnderRevision

Standards Relationship
IEC 60726:1982 Identical

Reconfirmed 1994

AS 1955.2-1978 Semiconductor convertors Semiconductor self-commutated convertors
AS 2374.3.0-1982 Power transformers Insulation levels and dielectric tests - General requirements
AS 2374.1-1997 Power transformers General
AS 1243-1982 Voltage transformers for measurement and protection
AS 2374.3.1-1992 Power transformers Insulation levels and dielectric test - External clearances in air
AS 2768-1985 Electrical insulating materials - Evaluation and classification based on thermal endurance
AS 1018-1985 Partial discharge measurements
AS 2374.2-1997 Power transformers Temperature rise
AS 1675-1986 Current transformers - Measurement and protection
AS 1939-1990 Degrees of protection provided by enclosures for electrical equipment (IP Code)
AS 2374.6-1994 Power transformers - Determination of transformer and reactor sound levels
AS 1824.1-1995 Insulation co-ordination Definitions, principles and rules
AS 2374.4-1982 Power transformers - Tappings and connections
AS 1824.2-1985 Insulation coordination (phase-to-earth and phase-to-phase, above 1 kV) - Application guide
AS 2374.5-1982 Power Transformers Ability To Withstand Short-Circuit
AS 1955.3-1983 Semiconductor Convertors Semiconductor Direct D.C. Convertors (D.C. Chopper Convertors)
AS 1955.1-1977 Semiconductor Convertors General

AS 60076.1-2005 Power transformers General (IEC 60076-1, Ed. 2.1 (2000) MOD)
AS 3953-1996 Loading guide for dry-type power transformers
AS 2374.6-1994 Power transformers - Determination of transformer and reactor sound levels
AS 2374.1.2-2003 Power transformers Minimum Energy Performance Standard (MEPS) requirements for distribution transformers (Reconfirmed 2016)
AS 2374.1-1997 Power transformers General
AS 3953-1991 Loading guide for dry-type power transformers
AS 61330-2005 High-voltage/low-voltage prefabricated substations
AS 1028-1992 Power reactors and earthing transformers
AS 2374.2-1997 Power transformers Temperature rise

View more information
US$34.90
Excluding Tax where applicable

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.