Protection Classification IP 50 to DIN EN 60529 (VDE 0470)
The protection classification offered by an enclosure is shown by the letter IP (Ingress Protection) and two digits. The first digit indicates two factors:
1. Protection for persons
2. Protection for equipment
The second digit indicates the protection against water.
First digit: 5 |
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| Protection for persons: | Protection against a wire touching dangerous parts. | |
| Definition: | A body 1,0 mm in diameter must not be able to enter. | IP 5X
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| Test conditions: | The accessing probe is pushed against every opening of the enclosure with a standardised force or is inserted through the opening. | |
| Conditions for acceptance: | The protection is satisfactory if a sufficient distance between the accessing probe and dangerous parts is kept. | |
| Protection for equipment: | Protection against dust. | |
| Definition: | Dust penetration is not prevented altogether, but dust must not enter in sufficient quantities to prevent the equipment from operating satisfactorily, or to impair safety. | |
| Test conditions: | The test is carried out in a dust chamber in which talcum powder is being kept suspended in the air by means of a dust distributor or similar device. The enclosure which is being tested is placed in the test chamber while a vacuum pump keeps the pressure in the enclosure below the atmospheric pressure of the environment according to the standard. | |
| Conditions for acceptance: | The protection is satisfactory if the inspection shows that talcum powder has not accumulated in places or in quantities in a way that could impair the good working order of the operating material or represent a safety hazard, regardless of the type of dust concerned. | |
Second digit: 0 |
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| Protection against water : | No protection | |
| Definition: | - | IP X0
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| Test conditions: | - | |
| Conditions for acceptance: | - | |
Important note:
The protection classifications given for the enclosures refer to unmachined standard enclosures as supplied. As the tests to show protection classifications take no account of ageing, the maintenance of the protection classification throughout the lifetime of the equipment is not guaranteed.