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

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Scope

This Standard refers to the classification of the degrees of protection provided by enclosures
against external mechanical impacts when the rated voltage of the protected equipment is not
greater than 72.5 kV.
This Standard is only applicable to enclosures of equipment where the specific standard
establishes degrees of protection of the enclosure against mechanical impacts (expressed in this
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 of
mechanical 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
Standard.
It will remain the responsibility of individual technical committees to decide on the extent and
manner in which the classification is used in their standards and to define the "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.
For a particular type of equipment a product committee may specify different requirements
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.
Standard shall apply.

Basic Data

Standard ID	GB/T 20138-2006 (GB/T20138-2006)
Description (Translated English)	Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	K60
Classification of International Standard	29.020
Word Count Estimation	8,849
Date of Issue	2006-03-06
Date of Implementation	2006-08-01
Quoted Standard	GB/T 2421-1999; GB/T 2423.55-2006; IEC 60050 (826) -1982
Adopted Standard	IEC 62262-2002, IDT
Regulation (derived from)	China Announcement of Newly Approved National Standards No. 4, 2006 (No. 91 overall)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard applies to the rated voltage not exceeding 72. 5 kV electrical equipment enclosures against external mechanical impact protection rating. This standard applies only to protection against external mechanical impacts grading specifically requested enclosure.