GB/T 20138-2006
Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code) (English Version)

Standard No.

GB/T 20138-2006

Language

Chinese, Available in English version

Release Date

2006

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2024-03

Replace By

GB/T 20138-2023

Latest

GB/T 20138-2023

Scope

This standard applies to the protection classification of the enclosure of electrical equipment with a rated voltage not exceeding 72.5kV against external mechanical impact. This standard is only applicable to enclosures that have special requirements for the classification of external mechanical impact protection. The purpose of this standard is to specify: a) the definition of the degree of protection for the enclosure of electrical equipment to protect the internal equipment from harmful effects caused by mechanical impact; b) the marking of the protection level; c) the requirements for each marking; d) for The tests that should be carried out to confirm whether the enclosure complies with the requirements of this standard. Each technical committee still has the authority to determine the extent and manner of adopting this classification method in the standards it develops, and to define the "enclosure" of the equipment under its jurisdiction. However, for any designated classification, the test shall not deviate from the provisions of this standard. If necessary, supplementary requirements can be added to the corresponding product standards. For some specific types of equipment, on the premise of ensuring the same safety protection level, the product technical committee may stipulate different requirements. This standard only stipulates that the intended use can meet the requirements of the corresponding product standards in any other aspects, and from the perspective of materials and workmanship, under normal use conditions, the enclosure should ensure the indicated protection level. This standard also applies to empty enclosures, as long as the shiny surface meets the routine test requirements and the selected degree of protection is suitable for this type of equipment.

GB/T 20138-2006 Referenced Document

• GB/T 2421-1999 Environmental testing for electric and electronic products Part 1: General and guidance
• GB/T 2423.55-2006 Environmental testing for electric and electronic products.Part 2:Test methods.Test Eh:Hammer tests
• IEC 60050-826:1982 International Electrotechnical Vocabulary. Part 826 : Chapter 826: Electrical installations of buildings

GB/T 20138-2006 history

• 2023 GB/T 20138-2023 Degree of protection of electrical equipment enclosures against external mechanical impacts (IK code)
• 2006 GB/T 20138-2006 Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code)