GB/T 2423.5-1995

📋 Scope / 适用范围 ai_extracted

This standard specifies the methods for determining the technical requirements for low-voltage power supply equipment (including switching types) with an output DC voltage below 250 V, power less than 30 kW, and supplied by an AC or DC source voltage below 600 V. When meeting the requirements for electrical or mechanical protective use, the equipment operates within the scope of Class I equipment or independently. This standard covers all types of equipment with any number of output channels, powered by AC or DC, including power supply equipment used in military, industrial, communication, and commercial applications. It is applicable to medical and toy applications under special circumstances. This standard does not apply to underwater and similar special environments, nor to medical equipment with live parts that can extend into the human body. This standard allows for the specification of technical parameters that define the level of technical performance required for power supply equipment to meet specific applications, establishes basic definitions related to such equipment, and determines specific technical requirements. This enables manufacturers and users to select and determine the applicable scope of their power supply equipment based on the specified technical requirements. However, the indicators given in the subclauses of current IEC publications must be complied with. 1.2 Normative References The following standards contain provisions that, through reference in this standard, constitute provisions of this standard. At the time of publication of this standard, the editions indicated are valid. All standards are subject to revision, and parties using this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. GB 156-1993 Standard Voltages (neq IEC 38:1983) GB/T 2423.1-1989 Basic Environmental Testing Procedures for Electric and Electronic Products - Test A: Cold Test Method (eqv IEC 68-2-1:1974) GB/T 2423.2-1989 Basic Environmental Testing Procedures for Electric and Electronic Products - Test B: Dry Heat Test Method (eqv IEC 68-2-2:1974) GB/T 2423.3-1993 Basic Environmental Testing Procedures for Electric and Electronic Products - Test Ca: Damp Heat, Steady State Test Method (eqv IEC 68-2-3:1969) GB/T 2423.5-1995 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Ea and Guidance: Shock (idt IEC 68-2-27:1987) GB/T 2423.6-1995 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Eb and Guidance: Bump (idt IEC 68-2-29:1987) GB/T 2423.10-1995 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Fc and Guidance: Vibration (Sinusoidal) (idt IEC 68-2-6:1982) GB/T 3047.1-1995 Series of Basic Dimensions for Panels, Racks and Cabinets with a Height Increment of 20 mm GB/T 3859.1-1993 Semiconductor Convertors - Specification of Basic Requirements (eqv IEC 146-1-1:1991) GB/T 3859.2-1993 Semiconductor Convertors - Application Guide (eqv IEC 146-1-2:1991) GB/T 3907-1983 Basic Measuring Methods for Industrial Radio Interference Approved by the State Bureau of Quality and Technical Supervision on 1998-08-24, Implemented on 1999-09-01 GB 17478-1998 GB/T 4365-1995 Electromagnetic Compatibility Terminology (idt IEC 50(161):1990) GB/T 4798.1-1986 Environmental Conditions for Electric and Electronic Products - Storage GB/T 4798.2-1996 Environmental Conditions for Electric and Electronic Products - Transportation (neq IEC 721-3-2:1985) GB/T 4942.2-1993 Degrees of Protection Provided by Enclosures for Low-Voltage Apparatus (eqv IEC 947-1:1988) GB/T 13926.4-1992 Electromagnetic Compatibility for Industrial Process Measurement and Control Equipment - Electrical Fast Transient/Burst Requirements (idt IEC 801-4:1988) GB/T 16935.1-1997 Insulation Coordination for Equipment within Low-Voltage Systems - Part 1: Principles, Requirements and Tests (idt IEC 664-1:1992) IEC 478-1:1974 Stabilized Power Supplies, DC Output - Part 1: Terms and Definitions IEC 478-2:1986 Stabilized Power Supplies, DC Output - Part 2: Rating and Performance IEC 478-3:1989 Stabilized Power Supplies, DC Output - Part 3: Reference Level and Measurement of Conducted Electromagnetic Interference IEC 478-4:1976

📝 Foreword / 前言 ai_extracted

1) The International Electrotechnical Commission (IEC) is a worldwide standardization organization composed of all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international cooperation on all questions concerning standardization in the fields of electricity and electronics. To this end, the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) Formal decisions or agreements of the IEC on technical matters, prepared by technical committees on which all National Committees having a special interest therein are represented, express, as nearly as possible, an international consensus of opinion on the subjects dealt with. 3) They have the form of recommendations for international use and are accepted by the National Committees in that sense. 4) In order to promote international unification, the IEC expresses the hope that National Committees should adopt the text of the IEC recommendations for their national regulations, to the extent permitted by their domestic conditions. Any divergence between the IEC recommendations and the corresponding national regulations should, as far as possible, be clearly indicated in the national regulations. International Standard IEC 1204 has been prepared by sub-committee 22E: Stabilized power supplies, of IEC technical committee 22: Power electronics. The text of this standard is based on the following documents: | Draft International Standard | Report on Voting | |-----------------------------|------------------| | 22E(CO)24 | 22E(CO)26 | Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. National Standard of the People's Republic of China Low-voltage power supply devices, d.c. output - Performance characteristics and safety requirements GB 17478-1998 eqv IEC 1204:1993

📚 References & Relations / 引用与关联

🔗 Related Standards / 同类标准