EEx motor designation
EEx motor designation
(OP)
Dear Colleagues,
Electrical equipment like motors must be accordingly stamped when designed for use in an explosion proof environment. Acc. to the European code the stamp started with EEx. This standard (EN 50014) was replaced (4 years ago?) by standard EN 60079. Now the stamp starts with Ex only. The first "E" was cancelled.
Still some manufacturers stamp their new motors with EEx and the corresponding certificates and declarations show EEx, too. That does not only apply to motors but also to other electrical components like sensors, switches etc. I know that thechnically the equipment has not change and that EEx or Ex is only a formal question. But is it still allowed to stamp EEx? Or can we (as a buyer) refuse equipment which shows EEx stamp?
Thanks in advance for your feedback.
Electrical equipment like motors must be accordingly stamped when designed for use in an explosion proof environment. Acc. to the European code the stamp started with EEx. This standard (EN 50014) was replaced (4 years ago?) by standard EN 60079. Now the stamp starts with Ex only. The first "E" was cancelled.
Still some manufacturers stamp their new motors with EEx and the corresponding certificates and declarations show EEx, too. That does not only apply to motors but also to other electrical components like sensors, switches etc. I know that thechnically the equipment has not change and that EEx or Ex is only a formal question. But is it still allowed to stamp EEx? Or can we (as a buyer) refuse equipment which shows EEx stamp?
Thanks in advance for your feedback.





RE: EEx motor designation
The link above might be helpful. If I specified EN 60079 compliant equipment, that is what I would expect to pay for. Whether or not the actual equipment changes is not the issue, the issue is if a vendor will not or cannot certify the item to my specs before the sale, what kind of support will I get afterwards?
RE: EEx motor designation
When we certify our IECEx equipment, the certificate we receive clearly states the marking that the product requires. Following the certificate seems to me to be the most future-proof way to ensure one is compliant.
RE: EEx motor designation