Norgren Collateral

z9611BR Process Fluid Control

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24 Process Fluid Control Marking of electrical devices in potentially explosive atmospheres 5 0123 x II 2G Ex ia IIC T6 Gb PTB 07 ATEX 2019 X TYPE OF PROTECTION PRINCIPLE OF PROTECTION APPLICATION MARKING MAY BE USED IN ZONE IEC CENELEC general requirements – all applications – – IEC 60079-0 EN 60079-0 flameproof enclosure a propagation of an explosion inside to the outside is excluded control stations, motors, fuses, switchgear, power electronics Ex d 1 or 2 IEC 60079-1 EN 60079-1 increased safety avoidance of arcs, sparks and excessive temperature installation materials, motors, luminaries Ex e 1 or 2 IEC 60079-7 EN 60079-7 intrinsic safety limitation of energy and through that prevention of ignitable sparks measurement and control, automation technology, sensors, actuators Ex ia 0, 1 or 2 IEC 60079-11 EN 60079-11 Ex ib 1 or 2 IEC 60079-11 EN 60079-11 pressurisation ex-atmosphere can't enter through the overpressure switch- and control cupboards, analyse-apparatus, computers Ex p 1 or 2 IEC 60079-2 EN 60079-2 encapsulation ex-atmosphere can't enter through the potting material coils of motors or relays, solenoid valves Ex ma 1 or 2 IEC 60079-18 EN 60079-18 Ex mb oil immersion ex-atmosphere can't enter through the oil transformers, relays, control stations, magnetic contactors Ex o 1 or 2 IEC 60079-6 EN 60079-6 powder filling an propagation of an ignition inside to the outside is excluded capacitors, transformers Ex q 1 or 2 IEC 60079-5 EN 60079-5 non sparking avoidance of ignitable sparks in normal operation sensors, solenoids, pressure switches Ex n 2 IEC 60079-15 EN 60079-15 CONDITIONS IN HAZARDOUS AREAS FLAMMABLE SUBSTANCES TEMPORARY BEHAVIOUR OF FLAMMABLE SUBSTANCES IN HAZARDOUS PLACES SUBDIVISION OF HAZARDOUS PLACES REQUIRED MARKING FOR INSTALLATION CLASSIFICATION OF HAZARDOUS AREAS EQUIPMENT CATEGORY EQUIPMENT PROTECTION LEVEL (EPL) gases, vapours is present continuously or for long periods or frequently zone 0 II 1G Ga is likely to occur in normal operation occasionally zone 1 II 2G or 1G Gb or Ga is not likely to occur in normal operation but, if it does occur, will persist for a short period only zone 2 II 3G or 2G or 1G Gc or Gb or GA dusts is present continuously or for long periods or frequently zone 20 II 1D Da is likely to occur in normal operation occasionally zone 21 II 2D or 1D Db or Da is not likely to occur in normal operation but, if it does occur, will persist for a short period only zone 22 II 3D or 2D or 1D Dc or Db or Da

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