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< , , Detailed description:
, . The enclosure protects the device from certain external influences and prevents access to parts of the device in any direction"-ug note: This definition is quoted from the current international electrotechnical vocabulary [and needs to be explained in this standard as follows) The enclosure provides protection for the equipment from harmful effects caused by mechanical collision b) Partitions and formations that prevent or restrict the entry of the test tools specified in this standard Holes or other open parts, whether attached to the enclosure or covering the equipment, are considered part of the enclosure, except parts that can be removed without the use of a key or tool
, . Protection level: The protection (level) provided by the enclosure to the equipment without causing harmful effects to the equipment due to external mechanical collisions, and is verified using standard test methods.
, .Code code indicates the protection of the enclosure from external harmful mechanical collisions Level. The mark indicates the protection level of the shell against external mechanical impact. The application code shall be marked according to the following regulations.
, . Arrangement of codes
,
, Code letters (International Mechanical Protection - One by one) Characteristic numbers Combination (to)
, . Characteristic numbers of the code and their definitions
, each set of characteristic numbers represents a collision energy value, see table
, which shows the correspondence between the code and its corresponding collision energy
, , Collision energy? . . . .
, r , Note: If higher collision energy is required, the recommended value is,
, Note: Some national standards use one digit to express In order to avoid confusion with the specified collision energy, the characteristic number is expressed by two digits
. According to this standard, it is unprotected
. Application of the code Generally, the protection level applies to the overall shell. For example, the shell Some parts of the product have different protection levels, and the corresponding protection levels should be marked.
, .Marking If the relevant product committee decides to require marking codes, the marking requirements should be specified in detail in the relevant product standards. . If applicable, the product standard should also specify the marking method used in the following situations - the protection level of one part of the same enclosure is different from that of other parts. The installation status will affect the level of protection of the enclosure.
, General test requirements
, , .Tested enclosures Unless otherwise specified in relevant product standards, all tested enclosures should be clean, new and complete enclosures, and all components should be installed in place.
, r , , for mechanical impact protection Verification of the test
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