IK Impact Test Standard

GB/T 20138-2006/IEC 62262:2002 Protection Class for External Mechanical Impact Resistance of Electrical Equipment Shell <IK Code>

This standard applies to the protection classification of electrical equipment enclosures against external mechanical impacts, for equipment rated voltages not exceeding 72.5 kV.

This standard applies only to enclosures that have specific requirements for protection against external mechanical impacts.

a) Definition of the protection grade of the electrical equipment casing to protect the internal equipment from harmful effects caused by mechanical impacts.

b) Ingress Protection (IP) rating symbol

C) Requirements for each logo;

d) Tests to be conducted to confirm that the housing meets the requirements of this standard.

The application of IK codes generally applies the protection level to the entire housing. If certain parts of the housing have different protection levels, the corresponding protection level should be marked. If the Product Committee decides to require the marking of IK codes, the detailed marking requirements should be specified in the relevant product standards.

　　The product standards should also specify the marking methods to be used in the following situations:

1. The protection rating of a part of the same housing is different from the others.

2. The installation status will affect the level of shell protection.

In the IEC62262 protection grade code, the IK code indicates the degree of protection against external harmful mechanical impacts for the housing, with characteristic number combinations ranging from 01 to 10: IK01, IK02, IK03, IK04, IK05, IK06, IK07, IK08, IK09, and IK10. Among these 10 grades, they are divided into two groups of tests based on different test levels: Group One consists of spring impact hammer tests from IK01 to IK06, with lower energy levels (ranging from 0.14J to 1J); the other group is the pendulum swing tests from IK07 to IK10, which have higher energy levels (ranging from 2J to 20J).

In the lighting industry, products such as car headlights, street lights, explosion-proof lights, and some special types of lights require IK05 to IK10 protection class tests for their lamp enclosures. Particularly, the tests for IK07, IK08, IK09, and IK10 levels aim mainly to verify whether the protective level of the lighting product enclosures meets industry and national requirements.