Device with electrical and / or electronic components in a sealed housing for operation in potentially explosive environments and method

摘要

The invention relates to a device (12) with a sealed housing (14) and electrical and / or electronic components (18) in an interior space (16) of the housing (14), as well as with the feed devices (26, 28, 30, 32) for supplying a pressurized ignition protection gas into the interior space (16) and a method for operating such a device (12). In order in the case of an interruption in the power supply, a penetration of ignitable gas in the housing (14) to prevent, it is proposed that the feed devices (26, 28, 30, 32) an ignition protective gas supply line (26) and a separate ignition protective gas storage container (26) as well as an electromagnetic two-way valve (30), in the ignition current to the state of the protective gas supply line (26) and in the de-energized state of the ignition protective gas storage container (28) with the interior space (16) connects.