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  • AS 2768-1985

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    Electrical insulating materials - Evaluation and classification based on thermal endurance

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

    Withdrawn date:  30-06-2017

    Language(s):  English

    Published date:  04-03-1985

    Publisher:  Standards Australia

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

    1 - AS 2768-1985 ELECTRICAL INSULATING MATERIALS-EVALUATION AND CLASSIFICATION BASED ON THERMAL ENDURANCE
    4 - PREFACE
    5 - CONTENTS
    6 - 1 SCOPE.
    6 - 2 REFERENCED DOCUMENTS.
    6 - 3 DEFINITION.
    6 - 4 GENERAL.
    6 - 4.1 Ageing factors.
    6 - 4.2 Classification
    6 - 4.2.1 General
    6 - 4.2.2 Operating conditions.
    7 - 4.2.3 Insulating materials in insulation systems.
    7 - 4.2.4 Temperature and temperature rise.
    7 - 4.2.5 Other factors of influence.
    7 - 4.2.6 Performance of insulating materials.
    7 - 4.3 Responsibility for selection and assignment.
    7 - 5 THERMAL EVALUATION OF INSULATING MATERIALS.
    8 - 6 THERMAL EVALUATION OF INSULATION SYSTEMS
    8 - 7 CLASSIFICATION.

    Abstract - (Show below) - (Hide below)

    Specifies a numerical system of classifying materials and systems based on their thermal endurance, ranging from Class 90 to Class 250 (in nine steps) thereafter in steps of 25, the figure indicating the assigned Celsius temperature. Retains the AS C320 alphabetical classifications Y, A, E, B, F and H (but not C) as an alternative for the time being. Describes the evaluation of long-term thermal properties of materials and of more complex insulation systems, and the influence of service conditions. Also defines the responsibility for assigning thermal identification and classification. Is based on, but differs from IEC 85 (1984) which specifies a part-alphabetical part-numerical system of classification and which permits alternative systems of identification of materials used in certain products.

    Scope - (Show below) - (Hide below)

    This standard describes a well-recognized system for the classification of materials for the electrical insulation of electrotechnical products based on their thermal endurance. It considers the thermal evaluation of insulatingmaterials, of insulation systems, their inter-relationship, and the influence of service conditions, and defines the responsibility for assigning a thermal classification to a particular insulating material.

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

    Committee EL-009
    Document Type Standard
    Publisher Standards Australia
    Status Withdrawn
    Supersedes

    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/NZS 3100:1997 Approval and test specification - General requirements for electrical equipment
    AS 62052.21-2006 Electricity metering equipment (ac) - General requirements, tests and test conditions Tariff and load control equipment (IEC 62052-21, Ed. 1.0 (2004) MOD)
    AS 3300-1996 Approval and test specification - General requirements for household and similar electrical appliances
    AS/NZS 3108:1994 Approval and test specification - Particular requirements for isolating transformers and safety isolating transformers
    AS 4563-2003 (AG 300) Commercial catering gas equipment
    AS 1284.6-1992 Electricity metering - Ripple control receivers for tariff and load control
    AS/NZS 3121:2002 Approval and test specification - Insulating mouldings (Reconfirmed 2020)
    AS 2735-1984 Dry-type power transformers
    AS 3121-1992 Approval and test specification - Insulating mouldings
    AS/NZS 61558.2.6:2001 Safety of power transformers, power supply units and similar Particular requirements for safety isolating transformers for general use (IEC 61558-2-6:1997, MOD)
    AS 4563-2004 Commercial catering gas equipment
    AS/NZS 3350.1:2000 Safety of household and similar electrical appliances General requirements (IEC 60335-1:1994 MOD)
    AS 3768-1990 Guide to the effects of temperature on electrical equipment
    AS 1284.5-1992 Electricity metering - General purpose electronic watthour meters
    AS/NZS 3200.1.0-1998 Medical electrical equipment General requirements for safety - Parent Standard
    AS 4565-2004 Radiant gas heaters for outdoor and non-residential indoor use
    AS/NZS 60065:2003 Audio, video and similar electronic apparatus - Safety requirements (IEC 60065:2001, MOD)
    AS 1418.12-1991 Cranes (including hoists and winches) Crane collector systems (Reconfirmed 2016)
    AS/NZS 2650:2000 Common specifications for high-voltage switchgear and controlgear standards
    AS 1284.1-1991 Electricity metering General purpose induction watthour meters
    AS 2381.6-1993 Electrical equipment for explosive atmospheres - Selection, installation and maintenance - Increased safety e
    AS 1359.101-1997 Rotating electrical machines - General requirements - Rating and performance
    AS/NZS 60745.1:2003 Hand-held motor-operated electric tools - Safety General requirements (IEC 60745-1:2001, MOD)
    AS/NZS 3947.1:1998 Low-voltage switchgear and controlgear General rules
    AS 1284.1-2004 Electricity metering General purpose induction watthour meters (Reconfirmed 2019)
    AS/NZS 3260:1993 Approval and test specification - Safety of information technology equipment including electrical business equipment
    AS/NZS 3100:2002 Approval and test specification - General requirements for electrical equipment
    AS/NZS 61046:2001 Auxiliaries for lamps - D.C. or A.C. supplied electronic step-down convertors for filament lamps - General and safety requirements (IEC 61046:1993, MOD)
    AS/NZS 7450.1:1999 Safety of hand-held motor-operated electric tools General requirements
    AS/NZS 3164:1994 Approval and test specification - Safety of electrically heated blankets, pads and similar flexible heating appliances for household use
    AS 3100-1994 Approval and test specification - General requirements for electrical equipment
    AS/NZS 61558.1:2000 Safety of power transformers, power supply units and similar General requirements and tests (IEC 61558-1 Ed 1.1, MOD)
    AS 3947.1-1993 Low-voltage switchgear and controlgear General rules
    AS/NZS 1158.6:2004 Lighting for roads and public spaces Luminaires
    AS/NZS 3350.1:2002 Safety of household and similar electrical appliances - General requirements (IEC 60335-1:1991, MOD)
    AS 3771-1998 Road lighting luminaires with integral control gear
    AS 1284.9-1993 Electricity metering - Electronic watthour meters (Classes 0.2 S and 0.5 S)
    AS 1966.3-1990 Electric arc welding power sources - Plasma arc cutting and welding types
    AS 4557-2004 Domestic outdoor gas barbecues
    AS/NZS 3947.4.1:2001 Low-voltage switchgear and controlgear Contactors and motor-starters - Electromechanical contactors and motor-starters
    AS 4552-2005 Gas fired water heaters for hot water supply and/or central heating
    AS/NZS 3947.1:2001 Low-voltage switchgear and controlgear General rules
    AS/NZS 3129.1:1993 Approval and test specification - Electric fence energizers - Safety requirements for mains-operated electric fence energizers
    AS 2374.2-1997 Power transformers Temperature rise
    AS 4560-2004 Gas pool heaters
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