符合iec60529標(biāo)準(zhǔn)關(guān)于ip5x,ip6x防塵測試要求. 
本試驗(yàn)符合iec 60529 / 1989-11 § 13.1 table vii fig. 2,標(biāo)準(zhǔn)要求，用于測試“防塵保護(hù)型“ip5x ”和“吸塵型” ip6x。 
測試設(shè)備：實(shí)驗(yàn)在一個(gè)帶有密封內(nèi)閣的沙塵箱內(nèi)進(jìn)行，通過空氣流將滑石粉暫時(shí)保存在里面。并且 
通過一個(gè)網(wǎng)孔尺寸為0.075 mm的濾網(wǎng)流出。通?；蹫槊苛⒎矫?千克。
PTL Dust Test Chamber
for checking the protection against solid foreign objects to verify the de-
grees of protection IP5X "Dust-protected" and IP6X "Dust-tight"
according to IEC 60529 :2001-02 § 13.1 Table VII Fig. 2.
Sense and purpose
Enclosures with the degree of protec-
tion IP5X "Dust-protected" do not have
to prevent ingress of dust totally. How-
ever dust should not penetrate in an
amount sufficient to interfere with the
satisfactory operation of the equipment
enclosed or to impair safety.
In the case of enclosures with degree of
protection IP6X "Dust-tight", it is neces-
sary to prove that no dust can penetrate
into the inside of the enclosure.
Test equipment
The tests are carried out by means of a
dust chamber with a sealed test cabi-
net, in which talcum powder is kept in
suspension by means of an air stream.
The talcum powder must be prepared in
such a manner that it will pass through
a sieve with a mesh size 0,075 mm.
The quantity of talcum given in the regulation is 2 kg per cubic metre test cabinet volume.
Test procedure
The enclosure under test is suspended in the test cabinet and connected to a vacuum
pump. This produces inside the specimen a depression of maximum 2 kPa = 20 mbar
(= approx. 200 mm water column) below atmospheric pressure.
The test is completed after 2 hours, if within 2 hours 80 to 120 times the air volume of the
specimen has been drawn through.

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