Application for IEC 60529(GB4208-1993)IP Protection Grade

IEC 60529 IP code is a coding system to indicate the degrees of protection provided by an enclosure against access to hazardous parts, ingress of solid foreign objects, ingress of water and to give additional information in connection with such protection IP code includes 4 digits, like IP23CH. IP short for ingress protection; numeral 2 stands for first characteristics and can be instead by numerals 0 to 6 or letter X (not requires to specified), it indicates enclosure against ingress of solid foreign; Numeral 3 standards for second characteristics and can be instead by numerals 0 to 8 or letter X (not requires to specified), it indicates enclosure against ingress of water with harmful effects. Letter C is additional letter, indicates enclosures access to hazardous parts, can be instead by letters A, B, C and D, but this characteristic can be ignored; Letter H is supplementary letter, can be instead by letters H, M, S and W, but this characteristic can be ignored. In this article, we just discuss the first and second characteristics.

The first characteristic can mark with numerals 0 to 6. We temporally ignore the second characteristic, additional letter and supplementary letter, i.e. IP0X to IP6X. According to IEC60529, it describes as: IP0X——non protected; IP1X——≥50mm diameter; IP2X——≥12.5mm diameter; IP3X——≥2.5mm diameter; IP4X——>1.0mm diameter; IP5X——dust protected; IP6X——dust tight.

There are many standards refer to IEC60529 regarding dustproof test, like IEC60598 luminaires general requirements and tests, clause 2.3 mentioned to classified the luminaire according to degree of protection against ingress of dust, solid objects and moisture; GB2423.37-89 electric and electronic products basic environmental testing procedure mentioned that sand and dust test method; GB/T4942.2-93 protection grade for low voltage device shell; GB7000.1-1996 and GB7001-1986 luminaire general requirements and test standard mentioned that the luminaire only need to do the test for IP5X and IP6X.

The second characteristic can mark with numeral 0 to 8. We temporally ignore the first characteristic, additional letter and supplementary letter, i.e. IPX1 to IPX8. According to IEC60529, it describes as: IPX0 non protected; IPX1——vertically dripping; IPX2——dripping (15°tilted); IPX3——spraying; IPX4——splashing; IPX5——jetting; IPX6——powerful jetting; IPX7——temporary immersion; IPX8——continuous immersion. The applied water requests clean water. According to the standard, drip box is for IPX1 and IPX2 test; Oscillating tube or spray nozzle is for IPX3 and IPX4 test, the semi-diameter of oscillating tube has 8 solutions for optional according to the size of the sample, the minimum is 200mm, the maximum is 1600mm, and increase step is 200mm. But quantity of the holes is difference for each grade. For example, there are 8 holes in semi-diameter 200mm tube for IPX3, but for IPX4, there are 12 holes in semi-diameter 200mm tube. Water jet hose nozzle is for IPX5 and IPX6 test, but difference grade, the inner diameter of nozzle is different, the inner diameter of nozzle is 6.3mm for IPX5, and 12.5mm is for IPX6, the distance from nozzle to enclosure is 2.5m to 3m. Immersion tank is for IPX7 and IP8 test, the test time is 30min for IPX7.

There are also many standards refer to IEC60529 regarding dustproof test, like IEC60598 luminaires general requirements and tests mentioned to classify the luminaire according to the degree of protection against ingress of water; IEC60335 house holding and similar electrical appliance general requirements and IEC60034-5:2000 degrees of protection provided by the integral design of rotating electrical machines mentioned the waterproof test.

In practice, it is a big problem for electronic equipments, luminaire, and house holding manufactures to find the right products to do the waterproof and dustproof test. Lisun Group developed the SC-X series dustproof test chamber and JL-X series waterproof test equipment according to IEC60529. SC-X dustproof test chamber is for IPX5 and IPX6 test, there are several models for optional according to the sample size.JL-X is for IPX1 to IPX8 test, there are four equipments for optional, JL-12 drip box is for IPX1 and IPX2 test; JL-34 swing pipe water spray test equipment is or IPX3 and IPX4 test; JL-56 waterproof jet test device is for IPX5 and IPX6 test; JL-78 immersion tank is for IPX7 and IPX8 test.

Lisun Group was found on 2003 year, there are sales and support agencies both in Hong Kong and Shanghai. Lisun Group is engaged in developing the LED and CFL test equipments, our main equipments includes EMC test equipments, safety test equipments, environment test equipments, spectroradiometer, integrating sphere, goniophotoemter and etc. Our equipments are accepted in the world wide, and we worked with many world famous companies, like GE, Philips, Sharp, Osram, Sony and etc.