• CSA E742 : 1994

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    ISOLATING TRANSFORMERS AND SAFETY ISOLATING TRANSFORMERS - REQUIREMENTS

    Available format(s):  Hardcopy, PDF

    Superseded date:  01-02-2014

    Language(s):  French

    Published date:  01-01-2004

    Publisher:  Canadian Standards Association

    Add To Cart

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

    FOREWORD
    PREFACE
    GENERAL PLAN OF THE STANDARD
    CHAPTER I: GENERAL REQUIREMENTS
    1 Scope and object
    2 Definitions
    3 General requirement
    4 General notes on tests
    5 Rating
    6 Classification
    7 Marking
    8 Protection against electric shock
    9 Change of input voltage setting
    10 Output voltage and output current under load
    11 No-load output voltage
    12 Short-circuit voltage
    13 Heating
    14 Short-circuit and overload protection
    15 Mechanical strength
    16 Protection against harmful ingress of water and
       moisture
    17 Insulation resistance and electric strength
    18 Construction
    19 Components
    20 Internal wiring
    21 Supply connection and external Flexible cables and
       cords
    22 Terminals for external conductors
    23 Provision for protective earthing
    24 Screws and connections
    25 Creepage distances and clearances
    26 Resistance to heat, abnormal treat, fire and
       tracking
    27 Resistance to rusting
    APPENDIX IA - Production tests
    APPENDIX IB - Examples intended to be used as a guide for
                  Sub-clause 8.6
    APPENDIX IC - Examples of points of application of test
                  voltages
    APPENDIX ID - Measurement of creepage distances and
                  clearances
    APPENDIX IE - Examples of points of measurement of
                  creepage distances and clearances
    CHAPTER II: SUPPLEMENTARY REQUIREMENTS FOR ISOLATING
                TRANSFORMERS
    SECTION ONE - ISOLATING TRANSFORMERS FOR GENERAL USE
                  SHAVER TRANSFORMERS AND SHAVER SUPPLY
                  UNITS
    2 Definitions
    5 Rating
    7 Marking
    8 Protection against electric shock
    11 No-load output voltage
    13 Heating
    14 Short-circuit and overload protection
    15 Mechanical strength
    18 Construction
    19 Components
    21 Supply connection and external flexible cables and
       cords
    22 Terminals for external conductors
    23 Provision for earthing
    APPENDIX II-1-A - Requirements for special socket-outlets
                      for shaver supply units
    CHAPTER III: SUPPLEMENTARY REQUIREMENTS FOR SAFETY ISOLATING
                 TRANSFORMERS
    SECTION ONE - SAFETY ISOLATING TRANSFORMERS FOR GENERAL USE
    5 Rating
    7 Marking
    11 No-load output voltage
    21 Supply connection and external flexible cables and
       cords
    SECTION TWO - TRANSFORMERS FOR TOYS
    2 Definitions
    5 Rating
    7 Marking
    8 Protection against electric shock
    9 Change of input voltage setting
    10 Output voltage and output current under load
    11 No-load output voltage
    12 Short-circuit voltage
    14 Short-circuit and overload protection
    15 Mechanical Strength
    18 Construction
    19 Components
    21 Supply connection and external flexible cables and
       cords
    SECTION THREE - BELL TRANSFORMERS
    2 Definitions
    4 General notes on tests
    5 Rating
    6 Classification
    7 Marking
    8 Protection against electric shock
    10 Output voltage and output current under load
    11 No-load output voltage
    13 Heating
    14 Short-circuit and overload protection
    15 Mechanical strength
    18 Construction
    19 Components
    21 Supply connection and external flexible cables and cords
    22 Terminals for external conductors
    24 Screws and connections
    SECTION FOUR - TRANSFORMERS FOR CLASS III LUMINAIRES
                   INCORPORATING INCANDESCENT LAMPS
    2 Definitions
    5 Rating
    7 Marking
    10 Output voltage and output current under load
    11 No-load output voltage
    21 Supply connection and external flexible cables and
       cords
    FIGURES

    Abstract - (Show below) - (Hide below)

    Applicable to stationary or portable, single-phase or polyphase, air-cooled isolating and safety isolating transformers, associated or otherwise, having a rated supply voltage not exceeding 1 000 V alternating current and 1 000 square root of 2 V unsmoothed direct current and rated frequency not exceeding 500 Hz.

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

    Document Type Standard
    Publisher Canadian Standards Association
    Status Superseded

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

    CSA DIR 005.1 : 1997 LIST OF CSA CERTIFIED WIRE AND CABLE EQUIPMENT
    CSA DIR 005.8 : 1997 LIST OF CSA CERTIFIED CONTROL, REGULATING AND SIGNAL EQUIPMENT
    C22.1-15 Canadian Electrical Code, Part I (23rd Edition), Safety Standard for Electrical Installations
    CSA C22.2 No. 49 : 2014 FLEXIBLE CORDS AND CABLES
    CSA B51 : 2014 BOILER, PRESSURE VESSEL, AND PRESSURE PIPING CODE
    CSA C22.2 No. 0.4 : 2004(R2013) BONDING OF ELECTRICAL EQUIPMENT
    CSA SPE.1000 : 2013 MODEL CODE FOR THE FIELD EVALUATION OF ELECTRICAL EQUIPMENT
    CSA C22.2 No. 21 : 2014 CORD SETS AND POWER-SUPPLY CORDS
    CSA C22.1EP : 1998 WHAT'S NEW IN 98: CHANGES TO CE CODE, PART 1, EXPLAINED
    CSA DIR 005.7 : 1997 LIST OF CSA CERTIFIED BUSINESS AND TELECOMMUNICATION EQUIPMENT
    ASME A17.1-2016/CSA B44-16 Safety code for elevators and escalators (Bi-national standard, with ASME A17.1)
    IEC 60906-2:2011 IEC system of plugs and socket-outlets for household and similar purposes - Part 2: Plugs and socket-outlets 15 A 125 V a.c. and 20 A 125 V a.c.
    CSA DIR 005.2 : 1997 LIST OF CSA CERTIFIED ELECTRICALLY EQUIPPED CONSUMER AND COMMERCIAL PRODUCTS
    CSA PLUS 2204 : 1993 ELECTRICAL PLUS: A GUIDE TO CSA ELECTRICAL AND ELECTRONIC STANDARDS
    CSA DIR 005.6 : 1997 LIST OF CSA CERTIFIED POWER SUPPLIES AND TRANSFORMERS
    B52-13 Mechanical refrigeration code
    C22.1HB-15 Canadian Electrical Code Handbook - An Explanation of the Rules of the Canadian Electrical Code, Part I
    CSA B44S1 : 0 SUPPLEMENT NO. 1 TO B44-04, SAFETY CODE FOR ELEVATORS AND ESCALATORS
    CSA DIR 010 : 1998 COMPONENT ACCEPTANCE DIRECTORY - PLASTICS PROGRAM
    CSA DIR 005.4 : 1997 LIST OF CSA CERTIFIED HOME AND COMMERCIAL ENTERTAINMENT PRODUCTS
    CSA DIR 005.5 : 1997 LIST OF CSA CERTIFIED LIGHTING EQUIPMENT AND PRODUCTS
    CSA DIR 005.3 : 1997 LIST OF CSA CERTIFIED ELECTRICAL EQUIPMENT FOR USE IN HAZARDOUS LOCATIONS
    CSA PLUS 2203 : 2001 HAZARDOUS LOCATIONS - GUIDE FOR THE DESIGN, TESTING, CONSTRUCTION, AND INSTALLATION OF EQUIPMENT IN EXPLOSIVE ATMOSPHERES
    CSA DIR 005.9 : 1997 LIST OF CSA CERTIFIED INDUSTRIAL PRODUCTS
    • 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, flexibile and cost effective