Not CAD related, but I was hoping an exploder full of engineers may help....

[ptc-1676835]

All,

I have a testing and standards question and I'm just hoping that an exploder
full of engineers may be able to help point me in the right direction.

At a previous company, I remember reading two different standards that dealt
with testing for water ingress in a submerged product. There were two
criteria that the specific test addressed: accidental submersion which was
used to test items that would accidentally get dropped in the water for
short periods of time and constant submersion which was to test for products
designed to reside under water.

I recall that the test methods were more or less the same in that the test
unit was placed in an ice bath at some depth for some time and then
transferred to a warm bath (200° F?) for the same length of time. The
accidental and full submersion tests different in number of cycles for sure
and maybe another variable as well. I don't remember.

I swear the standards I looked at before were IEC 60529 and MIL-STD-810G.
but, after looking at these standards again I can find no mention of the
test I just described. For submersion, both standards are actually quite
vague in specifying test parameters. for both standards, there is a 30
minute immersion period for accidental and then a longer, more severe
duration for continuous immersion but no actual duration is given. It's
just up to the manufacturer to decide the test requirements somewhat
arbitrarily.

So, I'm wondering if anybody has any freaking idea what I'm looking for and
what I remember? If anybody knows what cyclical test I describe, could you
please respond and let me know?

Thanks

Michael

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[bkurth]

Hi Michael,

I think what you might belooking for are IP ratings. They state the level of protectionfrom foreign materials—everything from solids to total immersion in water for an extended period of time. The currentstandard is AS 60529-2004. The International Standard is IEC 60529, so you are correct. As I remember, the testing criteria is quite specific for each level, especially at the higher IP 66 & IP67 levels.

Here are a couple links for more info.

http://www.nema.org/stds/complimentary-docs/upload/ANSI_IEC%2060529.pdf

http://www.protectingpeople.co.uk/fire_tech/ip_explained.htm

http://en.wikipedia.org/wiki/IP_Code

http://en.wikipedia.org/wiki/MIL-STD-810

Hope this helps.

Brian

In Reply to Michael Paul:

All,

I have a testing and standards question and I'm just hoping that an exploder
full of engineers may be able to help point me in the right direction.

At a previous company, I remember reading two different standards that dealt
with testing for water ingress in a submerged product. There were two
criteria that the specific test addressed: accidental submersion which was
used to test items that would accidentally get dropped in the water for
short periods of time and constant submersion which was to test for products
designed to reside under water.

I recall that the test methods were more or less the same in that the test
unit was placed in an ice bath at some depth for some time and then
transferred to a warm bath (200° F?) for the same length of time. The
accidental and full submersion tests different in number of cycles for sure
and maybe another variable as well. I don't remember.

I swear the standards I looked at before were IEC 60529 and MIL-STD-810G.
but, after looking at these standards again I can find no mention of the
test I just described. For submersion, both standards are actually quite
vague in specifying test parameters. for both standards, there is a 30
minute immersion period for accidental and then a longer, more severe
duration for continuous immersion but no actual duration is given. It's
just up to the manufacturer to decide the test requirements somewhat
arbitrarily.

So, I'm wondering if anybody has any freaking idea what I'm looking for and
what I remember? If anybody knows what cyclical test I describe, could you
please respond and let me know?

Thanks

Michael