How are electrical enclosures tested for resistance to water ingress?
Short answer
Enclosures are tested for water ingress by applying water in line with the relevant international standards and lining the interior of the enclosure under test with absorbent paper, which is examined immediately after the test to reveal any water that has entered. The result is expressed as the second number of the IP code, defined by IEC 60529, which runs from splashing water from all directions at IPX4 up to IPX9 for high-pressure, high-temperature jet sprays, wash-downs and steam-cleaning. Testing to DIN EN 60670-1, DIN EN 61439-1 and DIN EN 62208 gives a detailed insight into resistance to water penetration.
Our in-house testing facility validates the IP capabilities of all our enclosures. In line with the relevant international standards, water is applied to the enclosure, and the ingress of water is detected by lining the interior of the equipment under test with absorbent paper. This is then examined immediately after the test.
The second number in International Protection (or ingress protection, IP) codes, as defined by the IEC standard 60529, represents the level of protection against water. Generally, enclosures are designed to withstand at least water splashes from all directions (IPX4), up to IPX9, which means resistance to high-pressure, high-temperature jet sprays, wash-downs or steam-cleaning.
The main reason for using enclosures for electrical equipment is to protect it, ensuring its optimum performance and functional integrity. As one of the most damaging elements is water, preventing its ingress is a top priority.
Conducting extensive testing on electrical enclosures is what demonstrates a supplier’s commitment to high-quality solutions. In particular, by following the DIN EN 60670-1, DIN EN 61439-1 and DIN EN 62208 standards, it is possible to provide a detailed insight into an enclosure’s resistance to water penetration.
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