electrical equipment protection method

[eestudent]

Hello to everyone,

I would like to know if there's a difference between the following Electrical equipment protection method :

a) Ex'd' and Ex'e'
b) Ex'de' (only)
c) Ex'ed' (only)

Thank you very much!

 

[barbeer]

All I see are E's and X's(and alot of em!) whats it all mean?

 

[rbalex]

All I see are E's and X's(and alot of em!) whats it all mean?

If you are using the NEC the "E's" & "x's" mean nothing by themselves. The marking must be "AEx" to indicate the product meets US domestic standards. See Section 505.9(C)(2).
That said, the definitions for for "d" and "e" type protection are in Section 505.2.
From the OP:

1. The single letter designation means the product only offers the identified "type of protection"
2&3. Multiple letters means the product offers each type of protection identified. They are usually listed in alphabetical order, but it is not a requirement.

The overall Zone marking requirements are also in Section 505.9(C)(2).

 

[ontherox21]

1. Ex'd' idicates 'flameproof' protection method
Ex'e' idicates 'increased saftey'

The combination of the two indicates that both are being used as a protection method for hazardous areas.

Both are used for ATEX certification. If you need some help with ATEX, I recommend going to www.sourceiec.com. The owner is an expert in dealing with IEC and ATEX wiring methods.

 

[eestudent]

Thanks

Thanks

Dear All,

Thanks a lot!..I appreciate your help!

Kenneth Sy