IEC 62262 pdf download – Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code)

IEC 62262 pdf download – Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code)

IEC 62262 pdf download – Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code)
This standard refers to the classification of the degrees of protection provided by enclosuresagainst external mechanical impacts when the rated voltage of the protected equipment is notgreater than 72,5 kV.
This standard is only applicable to enclosures of equipment where the specific standardestablishes degrees of protection of the enclosure against mechanical impacts (expressed inthis standard as “impacts”).
The object of this standard is to give
a) the definitions for the degrees of protection provided by enclosures of electrical equipment as regards protection of the equipment inside the enclosure against harmful effects ofmechanical impacts;
b) the designations for the degrees of protection;c) the requirements for each designation;
d) the tests to be performed to verify that the enclosure meets the requirements of this
lt will remain the responsibility of individual technical committees to decide on the extent andmanner in which the classification is used in their standards and to define the “enclosure” as itapplies to their equipment.However,it is recommended that,for a given classification,thetests do not differ from those specified in this standard. lf necessary,complementaryrequirements may be included in the relevant product standard.
For a particular type of equipment a product committee may specify different requirementsprovided that at least the same level of safety is ensured.
This standard deals only with enclosures that are in all other respects suitable for theirintended use as specified in the relevant product standard and which from the point of view ofmaterials and workmanship ensure that the claimed degrees of protection are maintainedunder the normal conditions of use.
This standard is also applicable to empty enclosures provided that the general testrequirements are met and that the selected degree of protection is suitable for the type ofequipment.
2Normative references
The following referenced documents are indispensable for the application of this document.Fordated references,only the edition cited applies.For undated references,the latest edition ofthe referenced document (including any amendments) applies.
IEC 60050(826):1982,International Electrotechnical Vocabulary – Chapter 826: Electricalinstallations of buildings
IEC 60068-1:1988,Environmental testing – Part 1: General and guidance
IEC 60068-2-75:1997, Environmental testing – Part 2:Tests -Test Eh:Hammer tests
For the purpose of this standard, the following definitions apply:
enclosure 1
part providing protection of equipment against certain external influences and, in any direction,protection against contact
[IEV 826-03-12]
NOTE This definition from the existing International Electrotechnical Vocabulary (IEV) needs the followingexplanations under the scope of this standard:
a) enclosures provide protection of equipment against harmful effects of mechanical impacts;
b) barriers, shapes of openings or any other means – whether attached to the enclosure or formed by the enclosedequipment – suitable to prevent or limit the penetration of the specified test probes are considered as a part of theenclosure, except when they can be removed without the use of a key or tool.
degree of protection against mechanical impacts
the extent (level) of protection of the equipment provided by an enclosure against harmfulmechanical impacts and verified by standardised test methods
lK code
coding system to indicate the degree of protection provided by an enclosure against harmfulexternal mechanical impacts
The degree of protection provided by an enclosure against impacts is indicated by the lK codein the following way:
4.1 Arrangement of the lK code
Codes letters (international mechanical protection)Characteristic group numeral (00 to 10)
4.2 Characteristic group numerals of the IK code and their meanings
Each characteristic group numeral represents an impact energy value as shown in table 1 .
4.3 Application of the IK code
In general, the degree of protection applies to the complete enclosure. If parts of the enclosure have differing degrees of protection, the latter shall be indicated separately.
4.4 Marking
In cases where the relevant product committee decides that the marking of the IK-code shall be required, the marking requirements shall be detailed in the relevant product standard.
Where appropriate, such a standard should also specify the method of marking which is to be used when
– one part of an enclosure has a different degree of protection to that of another part of the same enclosure,
– the mounting position has an influence on the degree of protection.