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GB 19212.7-2012 English PDF

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GB 19212.7-2012: [GB/T 19212.7-2012] Safety 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 safety isola
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GB 19212.7: Evolution and historical versions

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GB 19212.7-2012English369 Add to Cart 3 days [Need to translate] [GB/T 19212.7-2012] Safety 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 safety isola Valid GB 19212.7-2012
GB 19212.7-2006English359 Add to Cart 3 days [Need to translate] Safety of power transformers, power supply units and similar -- Part 7: Particular requirements for safety isolating transformers for general use Obsolete GB 19212.7-2006

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Basic data

Standard ID GB 19212.7-2012 (GB19212.7-2012)
Description (Translated English) [GB/T 19212.7-2012] Safety 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 safety isola
Sector / Industry National Standard
Classification of Chinese Standard K41
Classification of International Standard 29.180
Word Count Estimation 14,162
Older Standard (superseded by this standard) GB 19212.7-2006
Quoted Standard GB 19212.1-2008; GB 1002-1996; GB 1094.1; GB/T 2423.2-2001; GB/T 2423.8-1995; GB/T 2423.55-2006; GB/T 4074.3-1999; GB/T 4074.5-1999; GB/T 4074.6-1999; GB/T 4207-2003; GB 4208-2008; GB/T 12113-2003; GB 15092.1-2003; GB/T 16935.1-1997; GB/T 16935.3-2005; GB
Adopted Standard IEC 61558-2-6-2009, IDT
Regulation (derived from) National Standards Bulletin No. 13 of 2012
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Chinese standard specifies the general safety isolating transformers and safety isolating transformers for general use built-in power supply device safety requirements. Transformers incorporating electronic circuits are also included in this standard

GB 19212.7-2012: [GB/T 19212.7-2012] Safety 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 safety isola



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Safety 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 ICS 29.180 K41 National Standards of People's Republic of China Replacing GB 19212.7-2006 Supply voltage of 1100V and below transformers, Safe reactors, power supply units and similar products Part 7. Security and isolation transformers built security barrier Particular requirements and tests from the transformer power supply unit Safetyoftransformers, reactors, powersupplyunitsandsimilarproductsfor supplyvoltagesupto1100V-Part 7. Particularrequirementsandtestfor (IEC 61558-2-6.2009, Safetyoftransformers, reactors, powersupplyunitsand similarproductsforsupplyvoltagesupto1100V-Part 2-6. Particular unitsincorporatingsafetyisolatingtransformers, IDT) Issued on. 2013-05-01 2012-06-29 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 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 < 600) 8 Appendix D creepage distances (cr), clearances (cl) and distances through insulation (dti) Material group Ⅰ (CTI≥600) 8 Appendix R IEC 60664-1.2007 4.2 Application Notes (see GB 19212.1 in 26.2) 8 Reference 9

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 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. The main drafters of this section. Zhang Xianzhong, Luo Zu Wei, Zhang Yafang, Liu Xing, Yu Yimin, Zhang Lili, Zhang. This part of the standard replaces the previous editions are. --- GB 19212.7-2006. Supply voltage of 1100V and below transformers, Safe reactors, power supply units and similar products Part 7. Security and isolation transformers built security barrier Particular requirements and tests from the transformer power supply unit

1 Scope

GB 19212.1-2008 this chapter is replaced by the following. GB 19212 of the provisions of this part of the general-purpose power supply device for safety isolating transformers and general purpose built safety isolating transformer Safety requirements. Transformers incorporating electronic circuits are also included in this section. Note 1. Includes electrical, temperature and mechanical safety aspects. Unless otherwise specified, the following "transformer" includes general purpose electrical safety isolating transformer and built for safety isolating transformers for general purposes Source device. Note 2. (linear) power supply unit, this part applies. Switching power supply unit, IEC 61558-2-16 and applicable in this section. This section applies to Stationary or mobile, single-phase or multi-phase, air-cooled (self-cooled or air-cooled), with independent and supporting the use of dry-type transformer Device. Windings may be encapsulated or non-encapsulated type. Rated supply voltage not exceeding AC 1100V, rated frequency and internal operating frequency not exceeding 500Hz. Rated output not exceeding. --- Single-phase transformers, 10kVA; --- Multiphase transformers, 16kVA. If the purchaser and the manufacturer otherwise agree, this section also applies to the transformer rated output is not limited. Note 3. This does not cover intended for distribution network transformer. Load output voltage or the rated output voltage does not exceed 50V AC or ripple-free DC 120V. This section does not apply to scheduled to be connected with the input and output terminals of the transformer and its external circuit components. This section applies to the requirements of insulation between circuits in the installation procedures or equipment specifications for double or reinforced insulation transformer. Note 4. Note the following. --- Transformer predetermined use on a vehicle, ship or aircraft, may require some additional requirements (according to other applicable standards, national regulations, etc.); --- Avoid the housing and the housing components such as protective measures by the outside influence of mold, insects, termites, solar radiation, and icing should also be considered; --- Transformer transport, storage and different working conditions should also be considered; --- Intended to be used for special circumstances, such as for the tropical environment transformers can be attached in line with national standards and other applicable rules of order Canadian requirements. Note 5. With the future development of transformer technology, may need to increase the upper limit frequency, but before then, you can use this section as a guide.

2 Normative references

In addition to the following references, Part 1 GB 19212.1-2008 Safety of power transformers, power supplies, reactors and similar products Score. General requirements and tests (IEC 61558-1.2005, IDT) is applicable. The increase in the following chapter references. GB 19212.1-2008/IEC 61558.2005 Safety - Part 1 "of power transformers, power supplies, reactors and similar products. pass With the requirements and testing, "No. 1 amendments (IEC 61558-1Ed2.0AMENDEMENT1, IDT)

3 Terms and Definitions

This chapter applies the GB 19212.1-2008.

4 General requirements

This chapter applies the GB 19212.1-2008. General Description 5 tests This chapter applies the GB 19212.1-2008.

6 RATINGS

Except for the following, GB 19212.1-2008 this chapter apply. The chapter increased the following provisions. 6.101 Rated output voltage should not exceed 50V AC or ripple-free DC 120V. 6.102 rated output shall not exceed. --- Single-phase transformers, 10kVA; --- Multiphase transformers, 16kVA. Purchaser and a manufacturing agreement when otherwise, the rated output unrestricted. 6.103 Rated power frequency and internal operating frequency should not exceed 500Hz. Rated supply voltage should not exceed 6.104 AC 1100V. Marked by visual inspection to verify compliance with the requirements of 6.101 ~ 6.104. Category 7 This chapter applies the GB 19212.1-2008.

8 Marking and other information

Except for the following, GB 19212.1-2008 this chapter apply. 8.1 h) item first sentence is replaced by the following. 8.11 indicates that the associated graphical symbol of the transformer is shown. 8.11 Addition of the following. Symbol or graphic symbol or name identification code Description Without endangering the safety of isolating transformers IEC 60417-5222 Non-short-circuit proof safety isolating transformer IEC 60417-5946 (Intrinsic or extrinsic) short-circuit proof safety isolating transformer IEC 60417-5947

9 Protection against electric shock

This chapter applies the GB 19212.1-2008. 10 change the input voltage setpoint This chapter applies the GB 19212.1-2008. 11 load output voltage and output current This chapter applies the GB 19212.1-2008. 12 no-load output voltage Except for the following, GB 19212.1-2008 this chapter apply. The chapter following is added. When connected to the transformer nominal frequency at ambient temperature rated supply voltage, load output voltage measurement. 12.101 load output voltage shall not exceed 50V AC or ripple-free DC 120V. Independent transformer, the output voltage is not intended to limit also applies to the output windings connected to each other was the case connected in series. Note. The requirements do not apply to ancillary connected in series with a transformer or IP00. 12.102 no-load output voltage difference between the output voltage and the load should not be too large. The difference between no-load output voltage and output load voltage, load percentage of the output voltage with the following formula, said. U -U load load U × 100% load Where. U --- load load output voltage, in volts (V); U load --- load output voltage, in volts (V). Meets the requirements of 12.101 and 12.102, and should be at ambient temperature transformer connected to the rated frequency of the rated supply voltage measuring Load output voltage to check. The difference should not exceed the values shown in Table 101. Table 101 outputs a voltage difference Transformer Type Rated output VA No-load output voltage and load output voltage difference Inherently short-circuit proof transformer ≤63 > 63 ~ ≤630 > 630 Other transformers ≤10 > 10 ~ ≤25 > 25 ~ ≤63 > 63 ~ ≤250 > 250 ~ ≤630 > 630 13 short-circuit voltage This chapter applies the GB 19212.1-2008. Fever 14 This chapter applies the GB 19212.1-2008. 15 short-circuit and overload protection This chapter applies the GB 19212.1-2008. 16 Mechanical strength This chapter applies the GB 19212.1-2008. 17 to prevent dust, solid objects and moisture into the harmful Protection This chapter applies the GB 19212.1-2008. 18 insulation resistance, dielectric strength and leakage current This chapter applies the GB 19212.1-2008. 19 Structure Except for the following, GB 19212.1-2008 this chapter apply. GB 19212.1-2008 19.1 is replaced by the following. 19.1 input and output circuits shall be electrically isolated from each other. There can be no direct or indirect structure should enable these circuits By connecting other conductive parts, except when you intend to take. By visual inspection and measurement, taking into account the provisions of Chapter 18 and Chapter 26, to verify eligibility. 19.1.1 In addition to meeting the requirements of 19.1.3 outside, between the input winding and output winding insulation should be strengthened insulation (double insulation or with a work by the As corresponding to the voltage) composition. Moreover, it should meet the following requirements. --- Not ready to plug connected to the mains power supply class Ⅰ transformer input winding insulation and the ground between its housing should be at least Basic insulation (corresponding to the input voltage) composition. Isolated output winding and the ground between the housing shall consist of at least basic insulation (with Corresponding to the voltage output) composition; --- Ready to plug connected to the mains power supply class Ⅰ transformer, the input winding insulation and the shell between the basic insulation should be at least (Operating voltage corresponding to the) constitution. Insulation should be at least (that corresponds to the operating voltage) output by the additional insulation between the windings and the housing constitute; --- Of Class Ⅱ transformer, the input winding insulation and the shell should be between at least double or reinforced insulation (relative to the input voltage Should) constitute. Insulation between the output windings and the housing should be at least double or reinforced insulation (corresponding to the output voltage) constitute, SELV circuit requires only basic insulation. 19.1.2 on with no input connected to the housing and positioned intermediate conductive member (such as a core) and output windings of the transformer between the following Requirements apply. 19.1.2.1 through the intermediate conductive members insulated Ⅰ and type Ⅱ transformer between input and output windings shall be double insulated or Reinforced insulation (corresponding to the operating voltage) components. --- Of class Ⅱ transformer winding inter input output windings and the housing and the housing through the insulating intermediate conductive part shall consist of double Jedi Edge or reinforced insulation (with the input voltage and the output voltage corresponding to the) constitution. For SELV circuit requires only basic insulation; --- Non-independent transformer (IP00), between the input winding and the output winding through the insulating intermediate conductive part shall consist of double insulation or Reinforced insulation (corresponding to the operating voltage) composition. 19.1.2.2 19.1.2.1 as an alternative, and not ready for plug connection type Ⅰ transformers and non-independent transformer (IP00), if Ensure that all core pieces are grounded on the structure (for example, by welding), while clearly illustrate safety transformer taken in the specification or guide Depending on the ground connection and can not be used in class Ⅱ device, the input and output winding winding insulation and a grounded conductive member between the intermediate and Insulating intermediate ground between the conductive parts shall consist of at least basic insulation (the input and output voltages corresponding to the) constitution. 19.1.2.3 19.1.2.1 and 19.1.2.2 In addition, the intermediate between the conductive member and the input winding and the intermediate conductive member and the output windings The insulation shall consist of at least basic insulation (the input and output voltages corresponding to the) constitution. Not with the input winding or output winding or at least with housing Basic insulated from the intermediate conductive part shall be deemed to be received on the corresponding parts. 19.1.3 not prepared to plug connected to the mains power supply class Ⅰ transformer, insulation between the input winding and the output windings can be used absolutely essential Edge of a protective shield instead of double or reinforced insulation, subject to the following conditions. --- Input winding insulation and protection shield between the insulation should meet the basic requirements (corresponding to the input voltage); --- Output winding insulation and protection shield between the insulation should meet the basic requirements (corresponding to the output voltage); --- Unless otherwise specified, protective shields shall be constructed of metal foil or wire coil, the shield should be extended to at least the total width of the input winding Degree, do not leave gaps or voids; --- When the protective shield does not cover the total width of the input winding, should additionally with adhesive tape or similar material in order to constitute a double HERE Heavy insulation; --- If the protective shield is made of a metal foil, it should be insulated from each other between the turns; if there is only one turn, then the insulation overlapping at least It should be 3mm; --- With a lead wire and protected by the shield of the shield wire rolling, the cross-section should be at least rated current overload protection device Cooperate to ensure that in the event of insulation breakdown, overload protection devices in lead damage before the first circuit cut-off; --- Lead should be welded to the protective screen or fixed in the protective screen has the same reliable in other ways. Note. The meaning of this section, "winding" does not include an internal circuit. See an example of the structure of the windings of GB 19212.1-2008 Appendix M. 19.1.4 output circuit and protection should be no connection between the grounding. But for matching transformers, except when related equipment standards allow. 19.1.5 between output circuit and the case should be no connection, but with matching transformer, except when related equipment standards allow. It should by visual inspection to verify compliance. 19.1.6 input and output terminals for external wiring used should be arranged such that the measurement conductor between the access point at the input and output terminals Distance of not less than 25mm. If the separator to ensure that this distance should be measured across a separator and bypass the separator application of insulating material Production and permanently fixed to the transformer. By visual inspection and measurement should be checked qualified, without regard to the intermediate conductive member. The chapter increased the following provisions. 19.101 rated output not exceeding 630VA transformer should be mobile Ⅱ class. Output circuit between 19.102 and housing should be no connection, but with matching transformer, except when related equipment standards allow. 19.103 pairs with any type of plug (integrated or non-integrated) connected to the power transformer on the grid, with the basic insulation plus protective shields Substitutions are allowed. 20 Component This chapter applies the GB 19212.1-2008. 21 Internal wiring This chapter applies the GB 19212.1-2008. 22 Supply connection and other external flexible cable or cord This chapter applies the GB 19212.1-2008. 23 Terminals for external conductors This chapter applies the GB 19212.1-2008. 24 protection grounding device This chapter applies the GB 19212.1-2008. 25 Screws and connections This chapter applies the GB 19212.1-2008. 26 creepage distances, clearances and distances through insulation Except for the following, GB 19212.1-2008 this chapter apply. The chapter increased the following provisions. 26.101 higher than 1000V working voltage creepage distance when, clearances and distances through insulation can be used to obtain extrapolation. 27 heat, fire and resistance to tracking This chapter applies the GB 19212.1-2008. 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 < 600) Except for the following, GB 19212.1-2008 this appendix apply. Appendix C, 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 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.

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