GB/T 4798.9-2012 English PDF

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GB/T 4798.9-2012: Classification of environmental conditions -- Classification of groups of environmental parameters and their severities -- Microclimates inside products
Status: Valid

GB/T 4798.9: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4798.9-2012	214	Add to Cart	3 days	Classification of environmental conditions -- Classification of groups of environmental parameters and their severities -- Microclimates inside products	Valid
GB/T 4798.9-1997	439	Add to Cart	3 days	Environmental conditions existing in application of electric and electronic products--Microclimates inside products	Obsolete

Similar standards

GB/T 14092.1   GB/T 14092.2   GB/T 4798.2   GB/T 4798.11   GB/T 4798.4   GB/T 4798.3   

Basic data

Standard ID: GB/T 4798.9-2012 (GB/T4798.9-2012)
Description (Translated English): Classification of environmental conditions -- Classification of groups of environmental parameters and their severities -- Microclimates inside products
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A21
Classification of International Standard: 19.020
Word Count Estimation: 11,185
Older Standard (superseded by this standard): GB/T 4798.9-1997
Quoted Standard: IEC 60721-1-1990; IEC 60721-2-1-1982; IEC 60721-3-0; IEC 60721-3-3; IEC 60721-3-4; IEC 60721-2-1-1982/AMD 1-1987
Adopted Standard: IEC 60721-3-9-1993, IDT
Regulation (derived from): National Standards Bulletin 2012 No. 28
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 standard specifies the products in the IEC 60721-3-3 or IEC 60721-3-4 climatic conditions of use, its internal components (basic parts, components, and built-in equipment) may encounter a variety of micro- climatic conditions of the grade. Microclima

GB/T 4798.9-2012: Classification of environmental conditions -- Classification of groups of environmental parameters and their severities -- Microclimates inside products

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS19.020 A21 National Standards of People's Republic of China GB/T 4798.9-2012/IEC 60721-3-9.1993 Replacing GB/T 4798.9-1997 Classification of environmental conditions groups of environmental parameters and their classification Severities microclimate inside the product (IEC 60721-3-9.1993, Classificationofenvironmentalconditions- Part 3. Classificationofgroupsofenvironmentalparametersand theirseverities-Section9. Microclimatesinsideproducts, IDT) Issued on. 2013-02-01 2012-11-05 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Definitions 1 4 Overview 2 Category 5 grade 2 micro-climatic conditions 6 microclimate level and type code 3 Appendix A (informative) microclimate level graphical representation and Priority 4 Appendix NA (informative) China's national standard and IEC standard correspondence between 7 GB/T 4798.9-2012/IEC 60721-3-9.1993

Foreword

GB/T 4798 standard currently divided into nine sections. --- GB/T 4798.1 Application of electric and electronic products environmental conditions - Part 1. Storage --- GB/T 4798.2 Application of electric and electronic products environmental conditions - Part 2. Transport --- GB/T 4798.3 Application of electric and electronic products environmental conditions - Part 3. Stationary use at weather protected locations --- GB/T 4798.4 Application of electric and electronic products environmental conditions - Part 4. No fixed workplace climate protection use --- GB/T 4798.5 Application of electric and electronic products environmental conditions - Part 5. Ground vehicle --- GB/T 4798.6 Classification of environmental conditions classification groups of environmental parameters and their severities Ship --- GB/T 4798.7 Application of electric and electronic products environmental conditions - Part 7. Portable and non-stationary use --- GB/T 4798.9 Classification of environmental conditions classification groups of environmental parameters and their severities microclimate inside the product --- GB/T 4798.10 electric and electronic products application environment conditions Introduction This is Part 9 GB/T 4798's. Rules in this section in accordance with GB/T 1.1-2009 given draft. This Part replaces GB/T 4798.9-1997 "Environmental conditions for electric and electronic applications microclimate inside the product," and GB/T 4798.9-1997 compared to the main changes are as follows. --- Deleting IEC foreword; --- Added Appendix NA (informative). This section uses the translation method identical with IEC 60721-3-9.1993 "Classification of environmental conditions - Part 3. Environmental parameters and their severities, etc. Classification and grading level group Section 9. Product internal micro-climate "version 1 and amendment No. 1 single (1994-12) and the" No. 1 for a single amendment Errata "(1995), and made the following editorial changes. --- Deleted IEC 60721-3-9 foreword; --- Increase the national standard foreword; --- Added Appendix NA (informative). This part of the National Electrical and Electronic Products Environmental conditions and environmental tests for Standardization Technical Committee (SAC/TC8) and focal points. This section drafted by. China Electric Apparatus Research Institute Limited. The main drafters of this section. Huangkai Yun, Xie Jianhua. This Part replaces the previous release case. --- GB/T 4798.9-1997. GB/T 4798.9-2012/IEC 60721-3-9.1993 Classification of environmental conditions groups of environmental parameters and their classification Severities microclimate inside the product

1 Scope

This section GB/T 4798 provisions of the product under the climatic conditions IEC 60721-3-3 or IEC 60721-3-4 when its internal Components (basic parts, components, and built-in equipment) level may encounter a variety of micro-climate conditions. Microclimate parameters of high temperatures and high relative humidity. Some other climate parameters such as low temperature grades of the element may also have attached Add impact, but not considered in this section. Taking into account the typical high temperature limit, the provisions of the limited number of micro-climate levels. Users of this section should be used to meet the intended use of the lowest level.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document. IEC 60721-1.1990 Classification of environmental conditions - Part 1. Environmental parameters and their severities (Classificationof environmentalconditions-Part 1. Environmentalparametersandtheirseverities) IEC 60721-2-11982, AMD1. 1987 Classification of environmental conditions Part 2. Environmental conditions appearing in nature - Section 1. Temperature and humidity (Classificationofenvironmentalconditions-Part 2. Environmentalconditionsappearingin nature-Section1. Temperatureandhumidity) IEC 60721-3-0 Classification of environmental conditions - Part 3. Environmental conditions and their severities Section 0. Introduction (Classification ofenvironmentalconditions-Part 3. Classificationofgroupsofenvironmentalparametersandtheir severities-Section0. Introduction) IEC 60721-3-3 Classification of environmental conditions Part 3. Environmental conditions and their severities - Section 3. weather protected locations fixed Use (Classificationofenvironmentalconditions-Part 3-3. Classificationofgroupsofenvironmental parametersandtheirseverities-Section3. Stationaryuseatweatherprotectedlocations) IEC 60721-3-4 Classification of environmental conditions - Part 4. Environmental conditions and their severities - Section 4. No fixed workplace climate protection Use (Classificationofenvironmentalconditions-Part 3. Classificationofgroupsofenvironmentalpa- rametersandtheirseverities-Section4. Stationaryuseatnon-weatherprotectedlocations)

3 Definitions

In addition to IEC 60721-1.1990 is defined in Chapter 3, the present section also uses the following definitions. 3.1 Microclimate microclimate Product components installed inside the climatic conditions at here only consider the air temperature and air humidity. 3.2 Microclimate level microclimaticclass Binned micro-climate, the climate grade (IEC 60721-3-3 or IEC 60721-3-4 regulations), high air temperature rating (see Table 1a)) GB/T 4798.9-2012/IEC 60721-3-9.1993 ......

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