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Current/Power Limitation for Hazardous Areas

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kaustubh

Hi All,

Can you tell me what are the current/power limitations for hazardous areas?

Thanks for your reply in advance,

Regards,

kaustubh
 
S

Steve Yates

It depends on which protection technique you are talking about and for which Gas Group.

If you are using Ex'd' (Explosionproof), then there isn't really a limit.

If you are talking about Intrinsic Safety, then in Gas Group IIC (Hydrogen), as a rule of thumb you can have useable working values of 30V and 20mA and still have reasonable cable lengths.

Steve
www.mtl-inst.com
 
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