GB/T 19212.2-2025 Active National standards

GB/T 19212.2-2025 Safety of transformers, reactors, power supply units and combinations thereof—Part 2:Particular requirements and tests for separating transformers and power supply units incorporating separating transformers for general applications

GB/T 19212.2-2025 Safety of transformers, reactors, power supply units and combinations thereof—Part 2:Particular requirements and tests for separating transformers and power supply units incorporating separating transformers for general applications

Publish Date: 2025-02-28 Implement Date: 2025-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 19212.2-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Transformer

ICS Name: Transformers, reactors, and inductors

Publish Date: 2025-02-28

Implement Date: 2025-09-01

Pages: 20 pages

Scope

This document specifies the electrical, thermal, and mechanical safety requirements and testing requirements for general-purpose isolation transformers and power supply devices with built-in isolation transformers. Transformers with electronic circuits are also included in this document.
Unless otherwise specified, the following term "transformer" includes general-purpose isolation transformers and power supply devices with built-in isolation transformers.
This document applies to (linear) power supply devices. For switching power supply devices, GB/T 19212.17 applies.
This document does not apply to transformers included in GB/T 1094.11.
This document applies to stationary or mobile, single-phase or multi-phase, air-cooled (self-cooling or air-cooled), independent or matched dry transformers. Their windings can be encapsulated or non-encapsulated.
The rated supply voltage does not exceed AC 1,000 V, and the rated supply frequency and internal operating frequency do not exceed 500 Hz.
The rated output does not exceed:
—— Single-phase transformers, 1 kVA;
—— Multi-phase transformers, 5 kVA.
If the buyer and the manufacturer have another agreement, this document also applies to transformers with no limit on rated output.

Development Information

Word Count: 23 Thousand words Pages: 20 pages

Same series standard

GB/T 19212.5-2025 Safety of transformers, reactors, power supply units and combinations thereof—Part 5:Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers for general applications GB/T 19212.14-2025 Safety of transformers, reactors, power supply units and combinations thereof—Part 14:Particular requirements and tests for auto-transformers and power supply units incorporating auto-transformers for general applications

Replace the following standards

GB/T 19212.2-2012 Safety of power transformers, power supplies, reactors and similar products—Part 2:Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications

Referenced Standards

GB 1002-1996 Single phase plugs and socket-outlets for household and similar purposes Types、basic parameters and dimensions GB/T 1002-2008 Single phase plugs and socket-outlets for household and similar purposes—Types,basic parameters and dimensions GB/T 1002-2021 Single phase plugs and socket-outlets for household and similar purposes—Types,basic parameters and dimensions GB 1002-2024 Single phase plugs and socket-outlets for household and similar purposes—Types,basic parameters and dimensions GB 1094.1-1996 Power transformers—Part 1:General GB/T 1094.1-2013 Power transformers—Part 1:General GB/T 1094.11-2022 Power transformers—Part 11:Dry-type transformers GB/T 2099.1-2021 Plugs and socket-outlets for household and similar purposes—Part 1:General requirements GB/T 2099.8-2017 Plugs and socket-outlets for household and similar purposes—Part 2-4:Particular requirements for plugs and socket-outlets for SELV GB/T 2423.7-1995 Environmental testing for electric and electronic products Part 2:Test Ec and quidance:Drop and topple (Primarily for equipment-type specimens) GB/T 2423.7-2018 Environmental testing—Part 2:Test methods—Test Ec:Rough handling shocks,primarily for equipment-type specimens GB/T 2423.10-1995 Environmental testing for electric and electronic products—Part 2:Test methods—Test Fc and guidance:Vibration (Sinusoidal) GB/T 2423.10-2008 Environmental testing for electric and electronic products—Part 2:Tests methods Test Fc:Vibration(sinusoidal) GB/T 2423.10-2019 Environmental testing—Part 2:Tests methods—Test Fc:Vibration(sinusoidal) GB/T 2423.22-2002 Environmental testing for electric and electronic products—Part 2:Test methods Test N:Change of temperature GB/T 2423.22-2012 Environmental testing—Part 2:Test methods—Test N:Change of temperature GB/T 2423.55-2006 Environmental testing for electric and electronic products—Part 2:Test methods—Test Eh:Hammer tests GB/T 2423.55-2023 Environmental testing—Part 2:Test methods—Test Eh:Hammer tests GB/T 4207-2022 Method for the determination of the proof and the comparative tracking indices of solid insulating materials GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB/T 4798.2-1996 Environmental conditions existing in the application of electric and electronic products—Transportation GB/T 4798.2-2008 Environmental conditions existing in the application of electric and electronic products—Part 2:Transportation GB/T 4798.2-2021 Classification of environmental conditions—Classification of groups of environmental parameters and their severities—Part 2:Transportation and handling GB/T 5169.10-2017 Fire hazard testing for electric and electronic products—Part 10:Glowing/hot-wire based test methods—Glow-wire apparatus and common test procedure GB/T 5169.11-2017 Fire hazard testing for electric and electronic products—Part 11:Glowing/hot-wire based test methods—Glow-wire flammability test method for end-products(GWEPT) GB/T 5169.16-2017 Fire hazard testing for electric and electronic products—Part 16:Test flames—50 W horizontal and vertical flame test methods GB/T 5465.2-2008 Graphical symbols for use on electrical equipment—Part 2:Graphical symbols GB/T 9364.3-1997 Miniature fuses—Part 3:Sub-miniature fuse-links GB/T 9364.3-2018 Miniature fuses—Part 3:Sub-miniature fuse-links GB/T 11021-2014 Electrical insulation—Thermal evaluation and designation GB 13140.2-1998 Connecting devices for low voltage circuits for household and similar purposes Part 2:Particular requirements for connecting devices as separate entities with screw-type clamping units GB/T 13140.2-2008 Connecting devices for low-voltage circuits for household and similar purposes—Part 2:Particular requirements for connecting devices as separate entities with screw-type clamping units GB 13140.3-1998 Connecting devices for low voltage circuits for household and similar purposes Part 2:Particular requirements for connecting devices as separate entities with screwless-type clamping units GB/T 13140.3-2008 Connecting devices for low-voltage circuitsfor household and similar purposes—Part 2:Particular requirements for connecting devices as separate entities with screwless-type clamping units GB/T 13539.2-2015 Low-voltage fuses—Part 2:Supplementary requirements for fuses for use by authorized persons(fuses mainly for industrial application)—Examples of standardized systems of fuses A to K GB/T 13539.3-2017 Low-voltage fuses—Part 3:Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household and similar applications)— Examples of standardized systems of fuses A to F GB 14048.7-1998 low-voltage switchgear and controlgear Ancillary equipment Section 1:Terminal blocks for copper conductors GB/T 14048.7-2006 Low-voltage switchgear and controlgear—Part 7-1:Ancillary equipment—Terminal blocks for copper conductors GB/T 14048.7-2016 Low-voltage switchgear and controlgear—Part 7-1:Ancillary equipment—Terminal blocks for copper conductors GB/T 14536.1-2022 Automatic electrical controls—Part 1:General requirements GB/T 15092.1-2020 Switches for appliances—Part 1:General requirements GB/T 15092.101-2020 Switches for appliances—Part 1-1:Requirements for mechanical switches GB/T 16842-1997 Test probes to verify protection by enclosures GB/T 16842-2008 Protection of persons and equipment by enclosures—Probe for verification GB/T 16842-2016 Protection of persons and equipment by enclosures—Probe for verification GB/T 16935.1-2008 Insulation coordination for equipment within low-voltage systems—Part 1:Principles,requirements and tests GB 17464-1998 Connecting devices—Safety requirements for screw-type and screwless-type clamping units for electrical copper conductors GB/T 17464-2012 Connecting devices—Electrical copper conductors—Safety requirements for screw-type and screwless-type clamping units—General requirements and particular requirements for clamping units for conductors from 0.2 mm2 up to 35 mm2(included) GB/T 17465.3-2008 Appliance couplers for household and similar general purposes—Part 2:Appliance couplers with a degree of protection higher than IPX0 GB/T 17627-2019 High-voltage test techniques for low-voltage equipment—Definitions,test and procedure requirements,test equipment GB/T 17627.1-1998 High-voltage test techniques for low-voltage equipment—Part 1:Definitions,test and procedure requirements GB/T 17627.2-1998 High-voltage test techniques for low-voltage equipment—Part 2:Measuring system and test equipment GB/T 21563-2008 Railway applications—Rolling stock equipment—Shock and vibration tests GB/T 21563-2018 Railway applications—Rolling stock equipment—Shock and vibration tests GB/T 34134-2017 SELV plugs and socket-outlets for household and similar purposes 16 A 6 V、12 V、24 V、48 V a.c. and d.c.—Types,basic parameters and dimensions ISO 8820(所有部分) IEC 60065:2014 IEC 60127(所有部分) IEC 60216(所有部分) IEC 60227(所有部分) IEC 60227-5:2011 IEC 60245(所有部分) IEC 60245-4:2011 IEC 60269(所有部分) IEC 60309(所有部分) IEC 60317(所有部分) IEC 60317-0-7 IEC 60317-43 IEC 60317-56 IEC 60320(所有部分) IEC 60384-14:2023 IEC 60417-DB IEC 60454(所有部分) IEC 60664-3:2016 IEC 60691:2023 IEC 60730(所有部分) IEC 60851-3:2009 IEC 60851-5:2008 IEC 60851-6:2012 IEC 60898(所有部分) IEC 60906-1 IEC 60990:2016 IEC 61800-5-1 DIN 43670:1975 DIN 43670-2:1985 DIN 43671:1975 GB/T 1094.11-2007 Power transformers—Part 11:Dry-type transformers GB/T 1094.11-2022 Power transformers—Part 11:Dry-type transformers GB/T 5465.2-2023 Graphical symbols for use on electrical equipment—Part 2:Graphical symbols GB/T 19212.1-2023 Safety of transformers,reactors,power supply units and combinations thereof—Part 1:General requirements and tests GB/T 19212.17-2013 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V—Part 17:Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units GB/T 19212.17-2019 Safety of transformers,reactors,power supply units and similar products for supply voltages up to 1 100 V—Part 17:Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units

Adopt standards

IEC 61558-2-1:2021

Related Standards

GB 6450-1986 Replaced

GB 6450-1986 Dry-type power transformers

Publish Date: 1986-05-29

GB/T 7449-1987 Replaced

GB/T 7449-1987 Guide to the lightning impulse and switching impulse testing of power transformers and reactors

Publish Date: 1987-03-16

GB 13028-1991 Abolished

GB 13028-1991 Isolating transformers and safety isolating transformers Requirements

Publish Date: 1991-07-15

GB/T 14006-1992 Active

GB/T 14006-1992 Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment—Part 1:Transformers and inductors using YEI-1 laminations

Publish Date: 1992-12-17

GB/T 14860-1993 Replaced

GB/T 14860-1993 Generic specification for transformers and inductors for use in telecommunication and electronic equipment

Publish Date: 1993-12-30

GB/T 15164-1994 Replaced

GB/T 15164-1994 Loading guide for oil-immersed power transformers

Publish Date: 1994-07-07