GB 19212.14-2012Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V. Part 14: Particular requirements and tests for auto transformers and power supply units incorporating auto transformers (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is Part 14 of GB/T 19212 "Safety of transformers, reactors, power supply units and their combinations"1).

The following parts have been published.

1) In this series of documents, some parts are under the heading "Safety of power transformers, power supplies, reactors and similar products" and some parts are under the heading "Mains voltage Some parts are under the heading "Safety of transformers, reactors, power supply units and similar products of 1100 V and below" all future releases of this series of documents will be under the title of "Safety of Transformers, Reactors, Power Supply Devices and Their Combinations".

release.

--- Part 1: General requirements and tests;

--- Part 2: Particular requirements and tests for general purpose isolating transformers and power supply units with built-in isolating transformers;

--- Part 3: Particular requirements and tests for control transformers and power supplies with built-in control transformers;

--- Part 4: Particular requirements and tests for ignition transformers for gas and oil burners;

--- Part 5: Particular requirements and tests for general purpose isolating transformers and power supply units with built-in isolating transformers;

--- Part 6: Particular requirements and tests for shaver transformers, shaver power supply units and shaver power supply units;

--- Part 7: Particular requirements and tests for safety isolating transformers and power supply units with built-in safety isolating transformers;

--- Part 8: Particular requirements and tests for transformers and power supplies for toys;

--- Part 9: Particular requirements and tests for transformers and power supplies for bells and clocks;

--- Part 10: Particular requirements and tests for transformers and power supply units for class III portable tungsten filament lamps;

--- Part 11: Special requirements for high insulation level separating transformers and separating transformers with output voltage exceeding 1000V and test;

--- Part 13: Particular requirements and tests for constant voltage transformers and power supply units;

--- Part 14: Particular requirements and tests for general purpose autotransformers and power supply units with built-in autotransformers;

--- Part 15: Particular requirements and tests for voltage regulators and power supply units with built-in voltage regulators;

--- Part 16: Particular requirements and tests for isolating transformers for power supply to medical facilities;

--- Part 17: Particular requirements and tests for switching power supply units and transformers for switching power supply units;

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

--- Part 21: Special requirements and tests for small reactors;

--- Part 24: Particular requirements and tests for transformers and power supply units for construction sites;

--- Part 27: Particular requirements and tests for transformers and power supply units for energy saving and other purposes.

This document replaces GB/T 19212.14-2012 "Transformers, reactors, power supply devices and similar equipment with power supply voltage of 1100V or less" Safety of similar products - Part 14: Particular requirements and tests for autotransformers and power supply units incorporating autotransformers Compared with GB/T 19212.14-2012, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

--- Changed the scope, the rated power supply voltage was changed from "1100V" to "1000V" (see Chapter 1, Chapter 1 of the 2012 edition);

--- Changed the power supply voltage rating (see 6.104, 6.104 of the 2012 edition);

--- Changed the symbols of transformer types and added the symbol of "linear power supply device" with output voltage (see Chapter 8, 2012 Chapter 8 of the 2011 edition);

--- Changed the requirements for no-load output voltage of independent transformers (see 12.101, 12.101 of the 2012 edition);

--- Changed the supplementary requirements for insulation resistance, dielectric strength and leakage current (see Chapter 18, Chapter 18 of the 2012 edition);

--- Changed the supplementary requirements for the structure and deleted the relevant requirements for the voltage to ground at the socket (see Chapter 19, 2012 edition).

--- Deleted the additional requirements for creepage distances, electrical clearances and insulation distances (Chapter 26 of the 2012 edition).

This document is modified to adopt IEC 61558-2-13:2022 "Safety of transformers, reactors, power supply units and their combinations Part 2-13.

Special requirements and tests for general purpose autotransformers and power supply units with built-in autotransformers.

The technical differences between this document and IEC 61558-2-13:2022 and their reasons are as follows.

--- IEC 61558-1:2017 was replaced by GB/T 19212.1-2023, which is a modified international standard, to meet the actual situation in my country situation and ease of use;

--- Added normative references GB/T 5465.2-2023 and GB/T 19212.17 to conform to my country's actual situation and facilitate for use.

The following editorial changes were made to this document.

--- The name of the standard is changed to "Safety of transformers, reactors, power supply units and their combinations - Part 14: General purpose autotransformers Particular requirements and tests for power supply units with autotransformers and built-in autotransformers";

--- The contents of Chapter 1 were rewritten, and the last two paragraphs and Note 1 were deleted;

--- The introduction to Chapter 3 was adjusted;

---The references were adjusted.

Introduction

The series of standards on the safety of transformers, reactors, power supply devices and their combinations are formulated to provide a reference for the safety of transformers with a rated power supply voltage not exceeding AC.

1000V, rated power frequency not exceeding 500Hz transformers, reactors, power supply devices and their combination products to establish a set of best evaluation Guidelines for the safety of related products in terms of material selection, design, production and inspection, and for the development of related products GB/T 19212 aims to establish the design and certification standards for transformers, reactors, power supply units and their combined products.

It is planned to consist of 20 parts, including principles and relevant rules for design, manufacturing and testing.

--- Part 1: General requirements and tests. The purpose is to establish the overall general technical requirements for products covered by the GB/T 19212 series of standards.

Technical requirements and test requirements.

--- Part 2: Particular requirements and tests for general purpose isolating transformers and power supply units with built-in isolating transformers.

Establish the general purpose isolating transformers and power supply units with built-in isolating transformers not included in or inconsistent with Part 1 Special technical requirements and test requirements.

--- Part 3: Particular requirements and tests for control transformers and power supplies with built-in control transformers. The purpose is to establish the control transformer Special technical requirements and test requirements for power supplies for devices and built-in control transformers that are not included in or inconsistent with Part 1.

--- Part 4: Particular requirements and tests for ignition transformers for gas and oil burners. The purpose is to establish Special technical requirements and test requirements for ignition transformers not included in or inconsistent with Part 1.

--- Part 5: Particular requirements and tests for general purpose isolating transformers and power supply units with built-in isolating transformers.

Establish the requirements for general purpose isolating transformers and power supply units with built-in isolating transformers not included in or inconsistent with Part 1 Special technical requirements and test requirements.

--- Part 6: Particular requirements and tests for shaver transformers, shaver power supply units and shaver power supply units.

To establish the terms for transformers for shavers, power supply units for shavers and power supply units for shavers not included in or incompatible with Part 1 Consistent special technical requirements and test requirements.

--- Part 7: Particular requirements and tests for safety isolating transformers and power supply units with built-in safety isolating transformers.

Establish safety isolating transformers and power supply units incorporating safety isolating transformers not included in or inconsistent with Part 1 Special technical requirements and test requirements.

--- Part 8: Particular requirements and tests for transformers and power supplies for toys. The purpose is to establish the requirements for transformers and power supplies for toys in Special technical requirements and test requirements not included in or inconsistent with Part 1.

--- Part 9: Particular requirements and tests for transformers and power supply units for bells and clocks. The purpose is to establish Special technical requirements and test requirements for transformers and power supplies not included in or inconsistent with Part 1.

--- Part 10: Particular requirements and tests for transformers and power supply units for class III portable tungsten filament lamps.

Transformers and power supplies for tungsten filament lamps have special technical requirements and test requirements not included in or inconsistent with Part 1.

--- Part 11: Special requirements and test methods for high insulation level separating transformers and separating transformers with output voltage exceeding 1000V the purpose is to establish the separation transformer with high insulation level and the separation transformer with output voltage exceeding 1000V in Part 1 Special technical requirements and test requirements not included in or inconsistent with it.

--- Part 13: Particular requirements and tests for constant voltage transformers and power supply units. The purpose is to establish constant voltage transformers and power supply units Special technical requirements and test requirements not included in or inconsistent with Part 1.

--- Part 14: Particular requirements and tests for general purpose autotransformers and power supply units with built-in autotransformers.

To establish the requirements for general purpose autotransformers and power supply units incorporating autotransformers not covered by or inconsistent with Part 1 Special technical requirements and test requirements.

--- Part 15: Particular requirements and tests for voltage regulators and power supply units with built-in voltage regulators. The purpose is to establish the power supply unit of the voltage regulator has special technical requirements and test requirements not included in or inconsistent with Part 1.

--- Part 16: Particular requirements and tests for isolating transformers for power supply to medical places. The purpose is to establish the requirements for isolating transformers for power supply to medical places.

Special technical requirements and test requirements for isolation transformers not included in or inconsistent with Part 1.

--- Part 17: Particular requirements and tests for switching power supply units and transformers for switching power supply units.

Special technical requirements for transformers for switched-mode power supplies and switching-mode power supplies not included in or inconsistent with Part 1 and test requirements.

--- Part 20: Particular requirements for interference attenuation transformers. The purpose is to establish the requirements for interference attenuation transformers not covered in Part 1.

Or special technical requirements and test requirements that are inconsistent therewith.

--- Part 21: Special requirements and tests for small reactors. The purpose is to establish the requirements for small reactors not included in Part 1 or Special technical requirements and test requirements that are inconsistent with it.

--- Part 24: Particular requirements for transformers and power supply units for construction sites. The purpose is to establish the requirements for transformers for construction sites.

Special technical requirements and test requirements for power supply devices not included in or inconsistent with Part 1.

--- Part 27: Particular requirements and tests for transformers and power supply units for energy saving and other purposes. The purpose is to establish energy saving and other Transformers and power supplies for other purposes have special technical requirements and test requirements not included in or inconsistent with Part 1.

GB/T 19212 stipulates in 20 parts that the rated power supply voltage shall not exceed AC 1000V and the rated power supply frequency shall not exceed 500Hz transformers, reactors, power supply units and their combination products related to electrical, temperature and mechanical safety requirements and test requirements by establishing clear scope, terminology, technical requirements and test requirements for various products, the producers, users and testers of related products can it enables operators to operate more clearly and accurately, thus laying the foundation for designing and manufacturing high-quality, safe and reliable products.

This document is part 14 of GB/T 19212 "Safety of transformers, reactors, power supply units and their combinations".

GB/T 19212.1-2023 is used in conjunction with this document. This document follows the writing structure of GB/T 19212.1-2023 and is an addition to its corresponding clauses.

When the provisions of GB/T 19212.1-2023 are not mentioned in this document, these provisions shall also apply to this document as long as it is reasonable.

When this document indicates "addition", "modification" or "replacement", it means that the relevant provisions of GB/T 19212.1-2023 are replaced in this document.

This document is numbered from 101 for the newly added content in GB/T 19212.1-2023.

Safety of transformers, reactors, power supply units and their combinations Part 14: Autotransformers and built-in transformers for general purposes Particular requirements and tests for power supply units with autotransformers

1 Scope

This chapter of GB/T 19212.1-2023 is replaced by the following.

This document specifies the electrical, thermal and mechanical safety aspects of general purpose autotransformers and power supply units with built-in autotransformers.

Transformers with electronic circuits are also included in this document.

Unless otherwise specified, the term "transformer" includes general purpose autotransformers and power supplies incorporating general purpose autotransformers.

device.

For (linear) power supply units, this document applies. For switching power supply units GB/T 19212.17 applies.

This document applies to stationary or mobile, single-phase or multi-phase, air-cooled (self-cooled or air-cooled), independent or supporting dry-type transformers.

The windings can be encapsulated or non-encapsulated.

The rated power supply voltage shall not exceed AC 1000V, and the rated power supply frequency and internal operating frequency shall not exceed 500Hz.

Core capacity not exceeding.

---Single-phase transformer, 2kVA;

---Multiphase transformer, 10kVA.

Rated output does not exceed.

---Single-phase transformer, 40kVA;

---Multiphase transformer,.200kVA.

If the purchaser and the manufacturer agree otherwise, this document also applies to transformers with no restrictions on core capacity and rated output.

If applicable, the no-load output voltage and rated output voltage shall not exceed 1000V AC or 1415V DC without ripple.

Transformer, no-load output voltage and rated output voltage shall not be less than AC 50V or ripple-free DC 120V.

This document does not apply to external circuits and their components intended to be connected to the input and output terminals of the transformer.

NOTE. Transformers covered by this document are suitable only for use where the installation regulations or end-product standards do not require insulation between circuits.

Note the following.

--- Additional requirements for transformers intended for use in vehicles, ships or aircraft (according to other applicable standards and regulations, etc.);

--- Protect the housing and its components from external influences such as mold, pests, termites, solar radiation and icing;

--- Different conditions for transportation, storage and operation of transformers;

--- For transformers intended for use in special environments, additional requirements in accordance with other applicable standards and regulations may be adopted.

With the development of transformer technology in the future, it may be necessary to increase the upper limit of the frequency. Until then, this document can be used as a guide.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.

In addition to the following normative references, this chapter of GB/T 19212.1-2023 is applicable.

This chapter adds the following normative references.