IEC 60989:1991
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users
31-12-2021
English - French
18-04-1991
Foreword
Preface
General Plan of the Standard
Chapter I: General Requirements
1. Scope and object
2. Definitions
3. General requirements
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 heat, fire and tracking
27. Resistance to rusting
Appendix I-A - Production tests
Appendix I-B - Void
Appendix I-C - Examples of points of application of test
voltages
Appendix I-D - Measurement of creepage distances and
clearances
Appendix I-E - Examples of points of measurement of
creepage distances and clearances
Chapter II: Particular Requirements for Special Separating
Transformers
Section One - Control Transformers
1. Scope and Object
2. Definitions
7. Marking
9. Change of input voltage setting
10. Output voltage and output current under load
11. No-load output voltage
13. Heating
17. Insulation resistance and electric strength
25. Creepage distances and clearances
Section Two - Ignition Transformers for Gas and Oil Burners
1. Scope and object
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
16. Protection against harmful ingress of water and moisture
17. Insulation resistance and electric strength
18. Construction
25. Creepage distances and clearances
Appendix II-B - Void
Appendix II-B - Measurement of leakage current for ignition
transformers for gas and oil burners
Section Three - High Insulation Level Transformers and
Separating Transformers with Working Voltage Above 1 000 V
1. Scope and object
2. Definitions
7. Marking
10. Output voltage and output current under load
11. No-load output voltage
17. Insulation resistance and electric strength
25. Creepage distances and clearances
Section Four - Stray Field Transformers
Under consideration
Section Five - Stabilizing Transformers (Current and Voltage
Types)
Under consideration
Chapter III: Particular Requirements for Autotransformers
1. Scope and object
2. Definitions
5. Rating
7. Marking
8. Protection against electric shock
10. Output voltage and output current under load
17. Insulation resistance and electrical strength
25. Creepage and clearance distances
26. Resistance to heat, abnormal heat, fire and tracking
Appendix III-A - Production tests
Chapter IV: Supplementary Specifications for Variable
Transformers
1. Scope and object
2. Definitions
6. Classification
7. Marking
8. Protection against electric shock
10. Output voltage and output current under load
11. No-load output voltage
13. Heating
15. Mechanical strength
18. Construction
21. Supply connection and external flexible cables and cords
25. Creepage distances and clearances
Appendix IV-A - Tests during production
Chapter V: Supplementary Particular Requirements for Reactors
Under consideration
Figures
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