BS EN 50495:2010 PDF Download

BS EN 50495:2010 is a European standard that sets out the requirements for safety devices used to prevent potential ignition sources in equipment operating in explosive atmospheres. These safety devices can either be integrated within the equipment, or installed separately and considered as associated apparatus exclusively for a specific type of protection or specific equipment under control.

Examples of safety devices include motor protection devices that limit temperature rise during stall conditions, controlling devices for pressurization protection, and temperature monitoring devices to control surface temperature. These devices aim to avoid sources of ignition and execute appropriate measures within a specified reaction time, such as initiating an alarm or automatically shutting down the equipment.

The standard excludes safety devices where the safety function is adequately covered in existing standards such as EN 60079 and EN 61241 series. It also does not include devices or systems that prevent the occurrence of explosive atmospheres, gas detectors covered under other standards, and protection for non-electrical equipment.