Don’t ever compromises on supplies for ATEX systems
Summary
Hazardous areas in the workplace are mainly the result of explosive atmospheres which can be caused by flammable gases, mists or vapours or by combustible dusts. If enough of a substance is mixed with air, a source of ignition is likely to cause an explosion resulting in damage, potential injury and, in the worst-case possible scenario, loss of life. Examples are where work activities create or release flammable gases or vapours, such as vehicle paint spraying, or workplaces where fine organic dusts such as grain, flour or wood are handled or processed. To meet ATEX regulations, power supplies must be designed with larger creepage and clearance distances on the PCB than may be normal, this provides over surface and through air protection against conduction or sparks. It is possible to source very compact DIN-rail power supplies with the ability to respond to momentary high currents without having permanent extra capacity taking up valuable space and wasting energy.
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