Safety standards

H

Thread Starter

Herry Tamba

Dear List,

Does anyone know about these numbering standards:

NEMA 4X, IEC IP67, EMI ( EN55011 ), EMS ( EN50082-2 ) and other numbering safety standards.

I would appreciate any help.

Regards,

Herry
 
All these numbers are Europe CE classification.
Product quality will be acknowledged by these european standard. Perhaps some of them

NEMA 4X: Cabinet enclosures
Type 4X
Intended for indoor or outdoor use primarily to provide a degree of protection against corrosion, windblown dust and rain, splashing water, and hose directed water; undamaged by ice which forms on the enclosure.

IEC IP67:
The same as in NEMA 4X.

The following nummers are european testing standards:
EMI ( EN55011 ), Electro magnetic immunity
EMS ( EN50082-2 ), Electro magnetic emission, http://www.atlasce.com/en82_2_95.htm

There are very long stories about all of this. Perhaps someone knows a very good site explaining all of this.

Good luck, Sisko Bos
Application Engineer
[email protected]k.nl
 
D

Dean Kindrai

IP-67 is not the same as NEMA 4X.

IP ratings DO NOT MAKE ANY SPECIFICATIONS ABOUT DEGREES OF PROTECTION AGAINST CORROSION!!!!!

IP-67 is closest to NEMA 4.

For reference IP-xy breaks down as follows:
x= Dust and rigid object protection.
0 - No special protection

1 - Protected against a rigid sphere of 50mm diameter (tested with a rigid sphere of 50mm diameter applied with a force of 50N)

2 - Protected against solid objects greater than 12.5mm (tested with a rigid sphere 12.5mm diameter applied with a force of 30N)

3 - Protected against solid objects greater than 2.5mm (tested with a rigid steel wire with a diameter of 2.5mm applied with a force of 3N)

4 - Protected against solid objects greater than 1mm (tested with a rigid steel wire with a diameter of 1mm applied with a force of 1N)

5 - Dust protected. Must meet IP-4 and dust chamber test to DIN 40 052.

6 - Dust tight and complete protection against contact.

y=water protection
0 - No protection

1 - Protected against falling water (dripping sprinkler, see DIN 40 053 parts 1 and/or 5)

2 - Protected against dripping water when enclosure tilted at 15deg (as above, with enclosure tilted).

3 - Protected against splashing water at an angle up to 60deg (tested with an oscillating sube or spray nozzle in accordance with DIN 40 053 parts 2 or 3 - depending on shape of object tested)

4 - Protected against splashing water from any direction (same test criteria as IP-x3)

5 - Protected against water jets (tested with jet of nozzle size 6 in accordance with DIN 40 053 part 4)

6 - Protected against powerful water jets (tested with jet of nozzle size 12 in accordance with DIN 40 053 part 4)

7 - Protected against the effects of temporary immersion (object must be immersed at least 15mm beneath the surface of the water and the lowest part must be at least 1m beneath the surface, and the test must last a minimum of 30 minutes and the water temperature must not deviate by more than 5deg C. Water can not enter in "harmful quantities".

8 - Protected against continuous immersion (test standards vary by object tested, but must be at least as described in IP-x7)


Dean Kindrai
Neff Engineering of WI
[email protected]
 
D
>>IEC IP67:
>>The same as in NEMA 4X. ... <clip>
>
>IP-67 is not the same as NEMA 4X.
>
>IP ratings DO NOT MAKE ANY SPECIFICATIONS ABOUT DEGREES OF PROTECTION
>AGAINST CORROSION!!!!!
>
>IP-67 is closest to NEMA 4.

It's true that IP ratings don't address corrosion. But actually, NEMA 4 is closest to IP65 and IP66, which are the waterjet tests. According to the rules for IP markings as detailed in IEC spec 529, a product marked simply IP67 is NOT rated for waterjets or anything similar to NEMA 4.

IP67 is temporary immersion in 3-6 feet of water, which is NEMA 6. A product that meets NEMA 4 but NOT NEMA 6 can be rated IP66 (not IP67). A product that satisfies NEMA 6 but NOT NEMA 4 can be rated IP67. A product that meets NEMA 4 AND NEMA 6 can be rated IP66/IP67. Note that IP67 does not encompass IP66, so a product that meets both NEMA 4 and NEMA 6 must show both IP ratings.

David Leese
 
I would appreciate a copy of the Nema/Iec chart. It might help to clarify some of my confusion regarding the two standards.
Thanks, Dan
 
I am a manufacturer of push buttons. My buttons are tested as per IP66. Can i claim to be NEMA 4?

> >>IEC IP67:
>>The same as in NEMA 4X. ... <clip>
>
>IP-67 is not the same as NEMA 4X.
>
>IP ratings DO NOT MAKE ANY SPECIFICATIONS ABOUT DEGREES OF PROTECTION
>AGAINST CORROSION!!!!!
>
>IP-67 is closest to NEMA 4.

It's true that IP ratings don't address corrosion. But actually, NEMA 4 is closest to IP65 and IP66, which are the waterjet tests. According to the rules for IP markings as detailed in IEC spec 529, a product marked simply IP67 is NOT rated for waterjets or anything similar to NEMA 4.

IP67 is temporary immersion in 3-6 feet of water, which is NEMA 6. A product that meets NEMA 4 but NOT NEMA 6 can be rated IP66 (not IP67). A product that satisfies NEMA 6 but NOT NEMA 4 can be rated IP67. A product that meets NEMA 4 AND NEMA 6 can be rated IP66/IP67. Note that IP67 does not encompass IP66, so a product that meets both NEMA 4 and NEMA 6 must show both IP ratings.

David Leese
 
Top