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WHAT IS ATEX?

Posted on by Kurz Industrial Solutions

(By: Kathy Cira)

As the world expands so must our knowledge of motors. We are most familiar with our knowledge of NEMA motors but we must also now have knowledge of IEC motors as well.
We see more and more IEC motors on equipment purchased from overseas manufacturers and more are being specified for equipment being designed for use overseas.

We often see NEMA motors with both NEMA and IEC references and ratings such as HP and Kw, 50 as well as 60 cycle, voltages used overseas, IP enclosures, and even ATEX Zone 2 references as well has UL classifications. This of course is done to allow NEMA motors to address global requirements. It however can cause confusion as well. It is important to recognize that although NEMA motors have nameplates that incorporate both NEMA and IEC references the IEC motors are distinct and different than the NEMA motor.

This is especially true when identifying and specifying explosion proof motors. NEMA motors require UL classification and certification. IEC motors must have ATEX (Atmospheric Explosive) classifications and certification. This is required for motors used on equipment used in hazardous locations outside the US market.

ATEX terminology is different from that used by UL and NEMA and should not be mixed with UL terms in specifications or quotes. We often times see this though. When designing and specifying motors certified for explosive environments outside of the US, it is important to have a good understanding of ATEX terminology. ATEX-Equipment-Classification-Labelling

Kurz Industrial Solutions and our motor manufacturing partners can address any questions you may have when specifying and/or trying to identify any IEC motor as well as one requiring ATEX certification.

 

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