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GB/T 4942-2021 English PDF (GB/T 4942.1-2006, GB/T 4942.1-2001)

GB/T 4942-2021_English: PDF (GB/T4942-2021)
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 4942-2021English385 Add to Cart 0--9 seconds. Auto-delivery Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification Valid GB/T 4942-2021
GB/T 4942.1-2006English150 Add to Cart 0--9 seconds. Auto-delivery Degrees of protection provided by the integral design of rotating electrical machines (IP code) -- Classification Obsolete GB/T 4942.1-2006
GB/T 4942.1-2001English679 Add to Cart 3 days [Need to translate] Classification of degrees of protection provided by enclosures of rotating electrical machines (IP code) Obsolete GB/T 4942.1-2001
GB/T 4942.1-1985EnglishRFQ ASK 3 days [Need to translate] Classification of degrees of protection provided by enclosures for rotating machines Obsolete GB/T 4942.1-1985


BASIC DATA
Standard ID GB/T 4942-2021 (GB/T4942-2021)
Description (Translated English) (Degree of protection of the overall structure of the rotating electrical machine (IP code))
Sector / Industry National Standard (Recommended)
Word Count Estimation 24,211
Date of Issue 2021-10-11
Date of Implementation 2022-05-01
Older Standard (superseded by this standard) GB/T 4942.1-2006

BASIC DATA
Standard ID GB/T 4942.1-2006 (GB/T4942.1-2006)
Description (Translated English) Degrees of protection provided by the integral design of rotating electrical machines (IP code). Classification
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K20
Classification of International Standard 29.160.01
Word Count Estimation 18,173
Date of Issue 2006-03-06
Date of Implementation 2006-08-01
Older Standard (superseded by this standard) GB/T 4942.1-2001
Quoted Standard GB 755-2000; GB/T 1993-1993
Adopted Standard IEC 60034-5-2000, IDT; IEC 60034-5 COR.1-2001, NEQ
Drafting Organization Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd.
Administrative Organization National Standardization Technical Committee rotary motor
Regulation (derived from) China Announcement of Newly Approved National Standards No. 4, 2006 (No. 91 overall)
Proposing organization China Electrical Equipment Industry Association
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard applies to rotating electrical enclosure classification. This section specifies the requirements for protective shell, the shell shall comply in all respects with the requirements and under normal conditions of use shell materials and processing technology should be able to ensure that its performance meets the requirements of this standard.

BASIC DATA
Standard ID GB/T 4942.1-2001 (GB/T4942.1-2001)
Description (Translated English) Classification of degrees of protection provided by enclosures of rotating electrical machines (IP code)
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K20
Classification of International Standard 29.160.01
Word Count Estimation 17,124
Date of Issue 2001/7/12
Date of Implementation 2001/12/1
Older Standard (superseded by this standard) GB/T 4942.1-1985
Quoted Standard GB 755-2000; GB/T 1993-1993,
Adopted Standard IEC 60034-5-1991, IDT
Regulation (derived from) China Announcement of Newly Approved National Standards No. 4 of 2006 (No. 91 overall)
Proposing organization National Machinery Industry Bureau
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China


GB/T 4942-2021 GB NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA ICS 29.160.01 CCS K 20 GB/T 4942-2021 / IEC 60034-5:2020 Replacing GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification [IEC 60034-5:2020, Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification, IDT] ISSUED ON: OCTOBER 11, 2021 IMPLEMENTED ON: MAY 1, 2022 Issued by: State Administration for Market Regulation; Standardization Administration of PRC. Table of Contents Foreword ... 3 1 Scope ... 6 2 Normative references ... 6 3 Terms and definitions ... 7 4 Designation ... 7 5 Degrees of protection - First characteristic numeral ... 8 6 Degrees of protection - Second characteristic numeral ... 11 7 Marking ... 12 8 General requirements for tests ... 13 9 Tests for first characteristic numeral ... 14 10 Tests for second characteristic numeral ... 18 11 Requirements and tests for open weather-protected machines ... 29 References ... 31 Foreword This document was drafted in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents. This document replaces GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification. Compared with GB/T 4942.1-2006, except for structural adjustment and editorial changes, the main technical changes are as follows: a) The specified standards for the protection of machine enclosures from dust are added in the "Scope" (see Chapter 1); b) The definitions of closed machines and open machines are added (see 3.1 and 3.2); c) The requirements for machines equipped with drain holes are modified in Chapter 5 (see 5.4; see 4.4 of the 2006 edition); d) The protection degree of IPX9 "machine protected against high temperature and high-pressure water jet" is added (see 6.2); e) The test and acceptance conditions for the dustproof test in the first characteristic numeral test are modified (see Chapter 9; see Chapter 8 of the 2006 edition); f) The test and acceptance conditions for the second characteristic numeral test of IPX9 are added (see 10.1); g) Figure 7 "Geometry of the fan jet nozzle" is added (see 10.1). This document is identical to IEC 60034-5:2020 Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification. The Chinese documents that have consistent correspondence with the international documents cited in this document are as follows: -- GB/T 1993-1993 Cooling methods for rotating electrical machines (eqv IEC 60034-6:1991); -- GB/T 3836 (all parts) Explosive atmospheres [IEC 60079 (all parts)]. The following editorial changes were made to this document: -- In order to be consistent with the technical standard system of China, the name of the standard is changed to Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification; -- The normative reference IEC 60079 (all parts) is added in Chapter 2; -- For ease of understanding, the note in 10.2.3 a) is added; -- "References" is added. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document was proposed by China Electrical Equipment Industry Association. This document shall be under the jurisdiction of the National Technical Committee on Rotating Machinery of Standardization Administration of China (SAC/TC26). Drafting organizations of this document: Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., Nanfang Pump Industry Co., Ltd., Jiamusi Electric Machine Co., Ltd., Shanghai Engineering Research Center for Motor System Energy Saving Co., Ltd., Xi'an Tech. Full Simo Motor Co., Ltd., Jiangsu Xi'anda Explosion-proof Co., Ltd., Hangzhou Jiangchao Motor Co., Ltd., Shandong Huali Electric Motor Group Co., Ltd., CRRC Yongji Electric Co., Ltd., Zhejiang Jinlong Electrical Machinery STOCK Co., Ltd., Fuzhou Wonder Electric Co., Ltd., Nanyang Explosion Prevention Weite Co., Ltd., Shanxi Electric Motor Manufacturing Co., Ltd., Jiangsu Magnet Valley Technologies Co., Ltd., Shanghai Testing & Inspection Institute for Electrical Equipment Co., Ltd., Suzhou Torin Drive Equipment Co., Ltd., Xiangtan Electric Manufacturing Group Co.,Ltd., Zhuhai Kaibang Motor Manufacture Co., Ltd., Dongfang Electric Machinery Co., Ltd., Jiangsu Aerospace Power Electromechanical Co., Ltd., Anhui Weineng Electric Machinery Co., Ltd., Jiangmen Jiangsheng Electric Machine Works Co., Ltd., Siemens Standard Motors (China) Co., Ltd., Xuzhou Keya Electromechanical Co., Ltd., Shaoxing Motai Mechanical and Electrical Technology Co., Ltd., Kangfu Sci-tech Co., Ltd., Rongcheng Rongjia Power Co., Ltd. The main drafters of this document: Ma Heran, Huang Lei, Feng Zhongming, Li Rui, Zhang Dongwei, Lu Jinsheng, Lan Yuhua, Zhang Wenbin, Geng Tao, Ye Ye, Xu Zhenfei, Tian Zhuang, Yang Chuangzao, Xu Junfeng, Tang Xiufeng, Li Qiang, Huang Jian, Gao Xin. The publication of previous versions of this document and the documents it replaces is as follows: -- First published as GB/T 4942.1-1985 in 1985, first revised in 2001, and second revised in 2006; Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification 1 Scope This document applies to the classification of degrees of protection provided by enclosures for rotating electrical machines. It defines the requirements for protective enclosures that are in all other respects suitable for their intended use and which, from the point of view of materials and workmanship, ensure that the properties dealt with in this document are maintained under normal conditions of use. This document does not specify degrees of protection against mechanical damage of the machine, or conditions such as moisture (produced for example by condensation), corrosive dust and vapour, fungus or vermin. This document is also applicable to explosion proof machines, but it does not specify the types of protection for use in a potentially explosive (dust, gas) environment. Those are defined in the IEC 60079 series of standards. In certain applications (such as agricultural or domestic appliances), more extensive precautions against accidental or deliberate contact may be specified. This document gives definitions for standard degrees of protection provided by enclosures applicable to rotating electrical machines as regards the: a) protection of persons against contacts with or approach to live parts and against contact with moving parts (other than smooth rotating shafts and the like) inside the enclosure and protection of the machine against ingress of solid foreign objects; b) protection of machines against the harmful effects due to ingress of water; c) protection of machines against the harmful effects due to ingress of dust. It gives designations for these protective degrees and tests to be performed to check that the machines meet the requirements of this document. 2 Normative references The following documents contain the provisions which, through normative reference in this document, constitute the essential provisions of this document. For the dated documentation and/or in the operating instructions. The lower degrees of protection, such as guards for external fans (as allowed in 5.3) and drain holes (as allowed in 5.4), need not be specified on the rating plate or in the documentation. Where the mounting of the machine has an influence on the degree of protection, the intended mounting arrangements shall be indicated by the manufacturer on the rating plate or in the instructions for mounting. 8 General requirements for tests 8.1 General The tests specified in this document are type tests. They shall be carried out on standard products or models of them. Where this is not feasible, verification either by an alternative test or by examination of drawings shall be the subject of an agreement between manufacturer and user. Unless otherwise specified, the machine for each test shall be clean with all the parts in place and mounted in the manner stated by the manufacturer. In the case of both first and second characteristic numerals 1, 2, 3 and 4, a visual inspection may, in certain obvious cases, show that the intended degree of protection is obtained. In such cases, no test need be made. However, in case of doubt, tests shall be made as prescribed in Chapters 9 and 10. 8.2 Adequate clearance 8.2.1 General For the purpose of the following test clauses in this document, the term "adequate clearance" has the meaning given in 8.2.2 or 8.2.3. 8.2.2 Low-voltage machines (rated voltages not exceeding 1000 V a.c. and 1500 V d.c.) The test device (sphere, finger, wire, etc.) does not touch the live parts or moving parts other than non-dangerous parts such as smooth rotating shafts. 8.2.3 High-voltage machines (rated voltages exceeding 1000 V a.c. and 1500 V d.c.) When the test device is placed in the most unfavourable position, the machine shall be capable of withstanding the dielectric test applicable to the machine. This dielectric test requirement may be replaced by a specified clearance dimension in ......


GB/T 4942.1-2006 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.160.01 K 20 GB/T 4942.1-2006 / IEC 60034-5:2000 Replacing GB/T 4942.1-2001 Degrees of Protection Provided by the Integral Design of Rotating Electrical Machined (IP Code) - Classification (IEC 60034-5:2000, Rotating Electrical Machines - Part 5: Degrees of Protection Provided by the Integral Design of Rotating Electrical Machines (IP Code) - Classification IDT) ISSUED ON: MARCH 06, 2006 IMPLEMENTED ON: AUGUST 01, 2006 Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of PRC. Table of Contents Foreword ... 3 1 Scope and Objective ... 4 2 Normative References ... 4 3 Designation ... 5 4 Degrees of Protection - First Characteristic Numeral ... 6 5 Degrees of Protection – Second Characteristic Numeral ... 7 6 Marking ... 9 7 General Requirements for Tests ... 10 8 Tests for First Characteristic Numeral ... 10 9 Tests for Second Characteristic Numeral ... 12 10 Requirements and Tests for Open Weather-Protected Machines ... 15 Degrees of Protection Provided by the Integral Design of Rotating Electrical Machined (IP Code) – Classification 1 Scope and Objective This Part applies to the classification of degrees of protection provided by enclosures for rotating electrical machines. It defines the requirements for protective enclosures that are in all other respects suitable for their intended use and which, from the point of view of materials and workmanship, ensure that the properties dealt with in this Standard are maintained under normal conditions of use. This Part does not specify: --- Degrees of protection against mechanical damage of the machine, or conditions such as moisture (produced for example by condensation), corrosive dust and vapor, fungus or vermin; --- Types of protection of machines for use in a potentially explosive (dust, vapor) environment. --- Requirements for fences placed around the enclosure only for personal safety. In certain applications (such as agricultural or domestic appliances), more extensive precautions against accidental or deliberate contact may be specified. This Part gives definitions for standard degrees of protection provided by enclosures applicable to rotating electrical machines as regards: a) Protection of persons against contacts with or approach to live parts and against contact with moving parts (other than smooth rotating shafts and the like) inside the enclosure and protection of the machine against ingress of solid foreign objects; b) Protection of machines against the harmful effects due to ingress of water. This Part gives designations for these protective degrees and tests to be performed to check that the machines meet the requirements of this Standard. 2 Normative References The provisions in following documents become the provisions of this Part through reference in this Part. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Part, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB 755-2000 Rotating Electrical Machines - Rating and Performance (idt IEC 60034-1:1996) GB/T 1993-1993 Cooling Methods for Rotating Electrical Machines (eqv IEC 60034-6:1991) 3 Designation The designation used for the degree of protection consists of the letters IP followed by two characteristic numerals signifying conformity with the conditions indicated in the tables of Clauses 4 and 5, respectively. 3.1 Single characteristic numeral When it is required to indicate a degree of protection by only one characteristic numeral, the omitted numeral shall be replaced by the letter X, for example IPX5 or IP2X. 3.2 Supplementary letters Additional information may be indicated by a supplementary letter following the second characteristic numeral. If more than one letter is used, the alphabetic sequence shall apply. 3.2.1 In special applications (such as machines with open circuit cooling for ship deck installation with air inlet and outlet openings closed during standstill), numerals may be followed by a letter indicating whether the protection against harmful effects due to ingress of water was verified or tested for the machine not running (letter S) or the machine running (letter M). In this case, the degree of protection in either state of the machine shall be indicated, for example IP55S/IP20M. The absence of the letters S and M shall imply that the intended degree of protection will be provided under all normal conditions of use. 3.2.2 For air-cooled open machines suitable for specific weather conditions and provided with additional protective features or processes (as specified in Clause 10), the letter W may be used. 3.3 Example of designation ......

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