Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 4208-2008 Degrees of Protection Provided by Enclosure (IP Code); in addition to a number of editorial changes, the following technical changes have been made with respect to GB/T 4208-2008 (the previous edition):
——The second characteristic numeral 9 is added in IP code arrangement in 4.1;
——The meaning of second characteristic numeral 9 is added in 4.2;
——The example of three markings labeled for enclosures of IPX5/IPX7/IPX9 is added in 4.3;
——The application scope of second characteristic numeral above 6 is revised in Chapter 6;
——The waterproof test method and main test condition for second characteristic numeral 9 are added in Table 8;
——The water spray test for second characteristic numeral 9 is added in 14.2.9;
——Figure 7 "Fan Jet Nozzle Dimensions" is added;
——Figure 8 "Fan Jet Nozzle Resulting Dimensions of Spraying Hole for Checking Purpose" is added;
——Figure 9 "Example of Different Quality Achievement of the Surface Finish of the Fan Jet Nozzle" is added;
——Figure 10 "Set-up for Measuring the Impact Force of the Water Jet for Determining the Protection Against High Pressure and Temperature Water Jet, Degree of Protection Against Ingress of Water IP X9" is added;
——Figure 11 "Impact Force Distribution" is added;
——Figure 12 "Test Set-up for Determining the Protection Against High-pressure and Temperature Water Jet; Degree of Protection Against Ingress of Water IP X9 for Small Enclosures" is added;
——B.25 in Annex B is added.
This standard is, by means of translation, identical to IEC 60529: 2013 Degrees of Protection Provided by Enclosure (IP Code) (English Version).
Chinese documents having corresponding consistency relationship with the normative international documents referenced in this standard are given below:
——GB/T 311.2-2013 Insulation Co-ordination - Part 2: Application Guide (IEC 60071-2: 1996, MOD)
——GB/T 2900.71-2008 Electrotechnical Terminology - Electrical Installations (IEC 60050-826: 2004, IDT)
——GB/T 2900.73-2008 Electrotechnical Terminology - Earthing and Protection against Electric Shock (IEC 60050-195: 1998, MOD)
This standard was proposed by and is under the jurisdiction of SAC/TC 25 National Technical Committee on Electric Safety of Standardization Administration of China.
The previous editions of this standard are as follows:
——GB 4208-1984, GB 4208-1993 and GB/T 4208-2008.
Introduction
This standard describes a system for classifying the degrees of protection provided by the enclosures of electrical equipment. Whilst this system is suitable for use with most types of electrical equipment, it should not be assumed that all the listed degrees of protection are applicable to a particular type of equipment. The manufacturer of the equipment should be consulted to determine the degrees of protection available and the parts of equipment to which the stated degree of protection applies.
The adoption of this classification system, wherever possible, will promote uniformity in methods of describing the protection provided by the enclosure and in the tests to prove the various degrees of protection. It should also reduce the number of types of test devices necessary to test a wide range of products.
This second edition of IEC 60529 takes account of experiences with the first edition, and clarifies the requirements. It provides for an optional extension of the IP Code by an additional letter A, B, C, or D if the actual protection of persons against access to hazardous parts is higher than that indicated by the first characteristic numeral.
This Amendment 2 introduces a new degree of protection IP X9 whereas no modifications of the existing degrees of protection specified in GB/T 4208-2008 are made. Thus no modifications of the existing test method are made.
In general, enclosures with an IP coding to the first edition would be eligible for the same code according to this edition.
Degrees of Protection Provided by Enclosure (IP Code)
1 Scope
This standard applies to the classification of degrees of protection provided by enclosures for electrical equipment with a rated voltage not exceeding 72.5 kV.
The object of this standard is to give:
a) Definitions for degrees of protection provided by enclosures of electrical equipment as regards:
1) protection of persons against access to hazardous parts inside the enclosure;
2) protection of the equipment inside the enclosure against ingress of solid foreign objects;
3) protection of the equipment inside the enclosure against harmful effects due to the ingress of water.
b) Designations for these degrees of protection.
c) Requirements for each designation.
d) Tests to be performed to verify that the enclosure meets the requirements of this standard.
It will be specified in the product standards to decide on the extent and manner in which, the classification is used in their standards and to define “enclosure” as it applies to their equipment. However, it is recommended that for a given classification the tests do not differ from those specified in this standard. If necessary, complementary requirements may be included in the relevant product standard. A guide for the details to be specified in relevant product standards is given in Annex B.
For a particular type of equipment, different requirements may be specified in product standards provided that at least the same level of safety is ensured.
This standard deals only with enclosures that are in all other respects suitable for their intended use as specified in the relevant product standard and which from the point of view of materials and workmanship ensure that the claimed degrees of protection are maintained under the normal conditions of use.
This standard is also applicable to empty enclosures provided that the general test requirements are met and that the selected degree of protection is suitable for the type of equipment to be protected.
Measures to protect both the enclosure and the equipment inside the enclosure against external influences or conditions such as mechanical impacts, corrosion, corrosive solvents (for example, cutting liquids), fungus, vermin, solar radiation, icing, moisture (for example, produced by condensation) and explosive atmospheres, and the protection against contact with hazardous moving parts external to the enclosure (such as fans), are matters for the relevant product standard to be protected.
Barriers external to the enclosure and not attached to it and obstacles which have been provided solely for the safety of personnel are not considered as a part of the enclosure and are not dealt with in this standard.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2421.1-2008 Environmental Testing - General and Guidance (IEC 60068-1: 1988, IDT)
GB/T 2423.37-2006 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test L: Dust and Sand (IEC 60068-2-68: 1994, IDT)
IEC 60050-195: 1998 International Electrotechnical Vocabulary (IEV) – Part 195: Earthing and Protection against Electric Shock
IEC 60050(826): 1982 International Electrotechnical Vocabulary (IEV) – Chapter 826: Electrical Installations of Buildings
IEC 60071-2: 1996 Insulation Co-ordination – Part 2: Application Guide
3 Terms and Definitions
For the purpose of this standard, the following definitions apply:
3.1
enclosure
a part providing protection of equipment against certain external influences and, in any direction, protection against direct contact
Note: This definition taken from the existing International Electrotechnical Vocabulary (IEV) needs the following explanations under the scope of this standard:
1) Enclosures provide protection of persons or livestock against access to hazardous parts.
2) Barriers, shapes of openings or any other means – whether attached to the enclosure or formed by the enclosed equipment – suitable to prevent or limit the penetration of the specified test probes are considered as a part of the enclosure, except when they can be removed without the use of a key or tool.
[IEC 826-03-12]
3.2
direct contact
contact of persons or livestock with live parts
Note: This IEV definition is given for information. In this standard “direct contact” is replaced by “access to hazardous parts”.
[IEC 826-03-05]
3.3
degree of protection
the extent of protection provided by an enclosure against access to hazardous parts, against ingress of solid foreign objects and/or against ingress of water and verified by standardized test methods
3.4
IP code
a coding system to indicate the degrees of protection provided by an enclosure against access to hazardous parts, ingress of solid foreign objects, ingress of water and to give additional information in connection with such protection
3.5
hazardous part
a part that is hazardous to approach or touch
3.5.1
hazardous live part
a live part which, under certain conditions of external influences, can give an electric shock
[IEC 60050-195, definition 195-06-05]
3.5.2
hazardous mechanical part
a moving part, other than a smooth rotating shaft, that is hazardous to touch
3.6
protection provided by an enclosure against access to hazardous parts
the protection of persons against
——contact with hazardous low-voltage live parts
——contact with hazardous mechanical parts
——approach to hazardous high-voltage live parts below adequate clearance inside an enclosure
Note: This protection may be provided
——by means of the enclosure itself;
——by means of barriers as part of the enclosure or distances inside the enclosure.
3.7
adequate clearance for protection against access to hazardous parts
a distance to prevent contact or approach of an access probe to a hazardous part
3.8
access probe
a test probe simulating in a conventional manner a part of a person or a tool, or the like, held by a person to verify adequate clearance from hazardous parts
3.9
object probe
a test probe simulating a solid foreign object to verify the possibility of ingress into an enclosure
3.10
opening
a gap or aperture in an enclosure which exists or may be formed by the application of a test probe at the specified force
4 Designations
The degree of protection provided by an enclosure is indicated by the IP Code in the following way:
4.1 Arrangement of the IP Code
Where a characteristic numeral is not required to be specified, it shall be replaced by the letter “X” (“XX” if both numerals are omitted).
Additional letters and/or supplementary letters may be omitted without replacement.
Where more than one supplementary letter is used, the alphabetic sequence shall apply.
If an enclosure provides different degrees of protection for different intended mounting arrangements, the relevant degrees of protection shall be indicated by the manufacturer in the instructions related to the respective mounting arrangements.
Details for the marking of an enclosure are given in Chapter 10.
4.2 Elements of the IP Code and their meanings
A brief description of the IP Code elements is given in the following chart. Full details are specified in the clauses indicated in the last column.
4.3 Examples for the use of letters in the IP Code
The following examples are to explain the use and arrangement of letters in the IP Code. For more comprehensive examples see Chapter 9.
IP44——no letters, no options;
IPX5——omitting first characteristic numeral;
IP2X——omitting second characteristic numeral.
IP20C——using additional letter;
IPXXC——omitting both characteristic numerals, using additional letter.
IPX1C——omitting first characteristic numeral, using additional letter.
IP3XD——omitting second characteristic numeral, using additional letter.
IP23S——using supplementary letter.
IP21CM——using additional letter and supplementary letter.
IPX5/IPX7/IPX9——giving three degrees of protection by an enclosure against water jets, temporary immersion and high pressure and temperature water jet for “versatile” application.
5 Degrees of Protection against Access to Hazardous Parts and against Solid Foreign Objects Indicated by the First Characteristic Numeral
The designation with a first characteristic numeral implies that conditions stated in both 5.1 and 5.2 are met.
The first characteristic numeral indicates that:
The enclosure provides protection of persons against access to hazardous parts by preventing or limiting the ingress of a part of the human body or an object held by a person;
The enclosure provides protection of equipment against the ingress of solid foreign objects.
An enclosure shall only be designated with a stated degree of protection indicated by the first characteristic numeral if it also complies with all lower degrees of protection.
However, the tests establishing compliance with any one of the lower degrees of protection need not necessarily be carried out provided that these tests would obviously be met if applied.
5.1 Protection against access to hazardous parts
Table 1 gives brief descriptions and definitions for the degrees of protection against access to hazardous parts.
Degrees of protection listed in this table shall be specified only by the first characteristic numeral and not by reference to the brief description or definition.
To comply with the conditions of the first characteristic numeral, adequate clearance shall be kept between the access probe and hazardous parts.
The tests are specified in Chapter 12.
Foreword i
Introduction iii
1 Scope
2 Normative References
3 Terms and Definitions
4 Designations
5 Degrees of Protection against Access to Hazardous Parts and against Solid Foreign Objects Indicated by the First Characteristic Numeral
6 Degrees of Protection against Ingress of Water Indicated by the Second Characteristic Numeral
7 Degrees of Protection against Access to Hazardous Parts Indicated by the Additional Letter
8 Supplementary Letters
9 Examples of Designations with the IP Code
10 Marking
11 General Requirements for Tests
12 Tests for Protection against Access to Hazardous Parts Indicated by the First Characteristic Numeral
13 Tests for Protection against Solid Foreign Objects Indicated by the First Characteristic Numeral
14 Tests for Protection against Water Indicated by the Second Characteristic Numeral
15 Tests for Protection Against Access to Hazardous Parts Indicated by the Additional Letter
Annex A (Informative) Examples of IP Coding for the Verification of Protection of Low-voltage Equipment Against Access to Hazardous Parts
Annex B (Informative) Summary of Specified Requirements in Relevant Product Standard
Bibliography
