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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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
Hardcopy , PDF
02-01-2014
French
01-01-2004
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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
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.
| DocumentType |
Standard
|
| Pages |
286
|
| PublisherName |
Canadian Standards Association
|
| Status |
Superseded
|
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