Atex Motor Classification

[gwbrock]

I am requesting a cross reference for motor classification as follows: Class I Division II Gas Group C,D T3. What would be the Proper Atex rating for the aforementioned classification. Is it imperative that I know the gas or can this be determined with the rating listed above?

 

[ScottyUK]

I believe you would need to know the gas. I don't think there is direct correlation between the North American and European classifications although there are broad parallels.


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If we learn from our mistakes I'm getting a great education!

 

[7anoter4]

I agree with ScottyUK you better know the gas, but for information you may use the manufacturer indications like this:

http://www.brookcrompton.com/pdf-files/2203e_hazcat_v1.pdf

If I well understood the equivalence may be as follows:
Class I div.2 C T3 = 3 G EEX de II B T3
Class I div.2 D T3 = 3 G EEX de II A T3

 

[waross]

The easy one, T3 indicates a maximum surface temperature of 200 deg. C
The Canadian Electrical code has a cross reference table.
You have to know the gas.
Some group C gasses are group II A and some are group II B.
Some group D gasses are group II A and some are group II B.

Bill
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Jimmy Carter