Richard,
Good question.
Let's look at the basics.
IP2x means that the fingers or similar objects not exceeding 80mm in
length. Solid objects exceeding 12mm in diameter.
The usual components used in the US (and provided by worldwide
suppliers) are UL 508 certified and are finger proof - meeting the IP2x
requirements above. Most of these components do not, however, have a full
enclosure (only a housing) meeting all the enclosure requirements. These
components are called open-frame components by UL even tho they seem to be
enclosed.
From my experience there are not too many components that are
exposed in a typical control cabinet. Those that are can be protected by,
preferably, adding a shield or by a hazard marking.
The usual American techniques for a typical electrical control panel
provide the needed level of safety and are usually certifiable for CE
marking of equipment.
Hopefully this simple explanation will be helpful to you.
:>) br, Pete
Peter E Perkins,
PO Box 23427
Tigard, ORe 97281-3427
503/452-1201 fone/fax
[email protected]
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