GB 19212.7-2012Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Part 7: Particular requirements and test for safety isolating transformers and power supply units incorporating saftey isolating transformers (English PDF)

1 Scope 1

2 Normative references 1

3 Terms and definitions 2

4 2 General requirements

5 General notes 2

Rating 2 6

7 Category 2

8 Marking and other information 2

9 Protection against electric shock 3 10 change the input voltage setpoint 3 11 load output voltage and output current 3 12 no-load output voltage of 3 13 short-circuit voltage 4 14 fever 4 15 short-circuit and overload protection 4

16 Mechanical strength 4

17 to prevent dust, solid objects and moisture into the harmful Protection 4 18 insulation resistance, dielectric strength and leakage current 4

19 Structure 5

20 Component 6

21 Internal wiring 6

22 Supply connection and other external flexible cable or cord 6

23 Terminals for external conductors 6 24 protection grounding device 6

25 Screws and connections 6 26 creepage distances, clearances and distances through insulation 7

27 Heat, fire and electrical resistance mark of 7

28 7 rust

Appendix 8

Appendix C creepage distances (cr), clearances (cl) and distances through insulation (dti) Material group II (400<=CTI Foreword

All technical content in this Part of GB 19212 is mandatory.

GB 19212 "of power transformers, power supplies, reactors and similar products -" 1) now includes the following sections.

1) This series of standards, some parts are under "power transformers, power supplies, reactors and similar products," the title, some parts in the "Supply Voltage for the next 1100V and below transformers, reactors, power supply units and similar products, "the title, the title of this series of standards possible future release it will be modified.

--- Part 1. General requirements and tests;

--- Part 2. Particular requirements and general purpose test transformer isolated and built separate transformer power supply;

--- Part 3. Specific requirements and test control and built-in control transformer power supply;

--- Part 4. Gas and oil burner ignition transformers for special requirements;

--- Part 5. Particular requirements and tests and built-in isolation transformer isolation transformer power supply device;

--- Part 6. Particular requirements for shaver transformers and shaver supply units;

--- Part 7. Particular requirements and tests for safety isolating transformers and built-in safety isolating transformer power supply device;

--- Part 8. Particular requirements for transformers for toys and power supplies and test;

--- Part 9. Particular requirements for bell and bell transformers;

--- Part 10. Particular requirements for class III portable transformers for filament lamps;

--- Part 13. Particular requirements for constant voltage transformers;

--- Part 14. Particular requirements for auto and test transformers and autotransformers built power supply device;

--- Part 15. Particular requirements for the regulator;

--- Part 16. supply of medical locations Particular requirements for isolating transformers;

--- Part 17. switched-mode power supply units and switch-mode power supply unit with the special requirements for transformers and tests;

--- Part 20. Particular requirements for interference attenuation transformers;

--- Part 21. Small reactors Particular requirements;

--- Part 24. Particular requirements for transformers for construction sites.

Other parts are under consideration.

This is Part 7 GB 19212's. This is part of the GB 19212.1-2008 developed on the basis of this part of the need and GB 19212.1-2008 and No. 1 in conjunction with amendments.

This part is the GB 19212.1-2008 corresponding chapter, article supplement and modified so GB of content 19212.1-2008 Conversion-oriented part of the contents. The newly added section for GB 19212.1-2008 content numbered starting from 101.

This section drafted in accordance with GB/T 1.1-2009 given rules.

19212.7-2006 "Safety - Part 7 of power transformers, power supply units and similar products of this section instead of GB . General Purpose Security Particular requirements for full isolation transformer ", compared with GB 19212.7-2006, the main technical changes are as follows.

a) the standard name to "supply voltage of 1100V and below transformers, safe reactors, power supply units and similar products Part 7. safety isolating transformers and safety isolating transformers built power supply unit Particular requirements and tests ";

b) Chapter 1 increase in the content of the relevant safety isolating transformers built power-related;

c) The standard supply voltage up to 1100V;

d) modify the contents of 19.1, complementing the output circuit of claim;

e) an increase of R changes to Appendix.

This section uses the translation method identical with IEC 61558-2-6:2009 "supply voltage is 1100V and below transformers, reactors, Safe power supply units and similar products - Part 2-6. safety isolating transformers and safety isolating transformer built a special power supply unit Requirements and testing "(in English).

For ease of use, this part of the IEC 61558-2-6:2009 also made the following editorial changes.

a) "this International Standard" by "this section";

b) Remove IEC 61558-2-6:2009 Foreword.

Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents.

This part is proposed by the China Electrical Equipment Industrial Association.

This part of the National Small power transformers, reactors, power supply units and similar products Standardization Technical Committee (SAC/TC418) Centralized.

This section is drafted. Shenyang Transformer Research Institute, China Electronics Standardization Institute, National Radio and Television Product Quality Supervision and Inspection Test center (Beijing Terrett Detection Technology Services Co., Ltd.), the Ministry of Industry Institute of Electronics fifth quality inspection center, Shanghai quality supervision Governor Electronics Technology Research Institute testing, inspection and quality household appliances.

28 Rust

This chapter applies the GB 19212.1-2008.

appendix

In addition to the following appendices, GB 19212.1-2008 appendix apply.

Appendix C

Creepage distances (cr), clearances (cl) and distances through insulation (dti) Material Group II (400<=CTI Appendix D Creepage distances (cr), clearances (cl) and distances through insulation (dti) Material Group I (CTI>=600) Except for the following, GB 19212.1-2008 this appendix apply.

Appendix D, the following is added.

Creepage 1000V working voltage is higher than when the distances, clearances and distances through insulation value can be obtained by extrapolation.

Appendix R

IEC 60664-1:2007 4.2 Application Notes (See GB 19212.1 in 26.2) Except for the following, GB 19212.1-2008 this appendix apply.

Appendix R following is added.

When the value is higher than the operating voltage of 1000V available extrapolation.

references

[1] IEC 61558-2-16Safetyoftransformers, reactors, powersupplyunitsandsimilarproducts forsupplyvoltagesupto1100V-Part 2-16. Particularrequirementsandtestsforswitchmodepower supplyunitsandtransformersforswitchmodepowersupplyunits2).

2) to be released.