标题: Hosedown test [打印本页] 作者: barry-xu 时间: 2010-9-1 11:23 标题: Hosedown test 请问那家实验室可以做这个测试？9 b/ y* m" m! S% {9 j! u
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Hosedown test ) ~9 [: S! D; E3 \: d; }7 r6 othe enclosure and its external mechanisms shall be subjected to a tream fo water from a hose 8 g( j3 @+ X- h& `% z. l" [# a" G
that has a 25 mm inside diameter (1 inch inside diameter) nozzle that delivers at least 240 L per $ w2 d* _: a# L! U
minute (65 gallons per minute). the water shall be directed at all joints from a distance of 3.0-3.5m(10-12feet). the nozzle shall be moved along each joint one time at a uniform nominal rate of 6mm/s (1/4 inch per second). a conduit may be installed to equalize internal and external pressure, but & z- O' `4 T+ _7 W8 Q, t7 M0 Rshall not serve as a drain. & E' M5 K1 Z D9 J0 }& D/ k# S# K* T: s2 S9 B3 S
the enclosure shall be considered to have met the requirements if at the conclusion of the test no water has entred the enlcousre.' E ~1 [1 u" \5 C1 F
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$ z2 a/ J* |3 I, B3 d0 i0 B; [谢谢作者: Andy.Yang 时间: 2010-9-1 12:49
It's very easy to do by yourself, just prepare a set of test equipment, and the most important is that you must send the meter to be calibrated...作者: barry-xu 时间: 2010-9-2 09:35
thanks for your advise, + N5 U* B; y- xbut I need third part to verfiy this test. do you have any other idea for this? that's my pleasure if you can introduce any lab to me?作者: Andy.Yang 时间: 2010-9-2 10:39
Normally, it's for UL Type 4X test, from UL's side, they wanna use the manufacturer's equipment and witness this test in the field, what I know, at least in Jiangsu province, it seems like there is no lab which can do this test...作者: barry-xu 时间: 2010-9-3 11:20
thanks作者: hwtao0506 时间: 2012-8-19 22:14
thanks for your advise