{"code":"Ex i","name":"Intrinsic safety","standard":"IEC 60079-11","zones":["0","1","2","20","21","22"],"epl":["Ga","Gb","Gc","Da","Db","Dc"],"principle":"Energy limitation — circuit energy limited below ignition threshold of the gas/dust","typicalApplications":["Sensors","Instruments","Communication devices","Portable equipment","Smartphones"],"advantages":["Live maintenance permitted","Lightweight","Suitable for all zones","Can be simple apparatus"],"disadvantages":["Power limited (~2W for ia)","Requires IS barriers","Cable parameters critical","System certification needed"],"levels":{"ia":"Zone 0/20 (two faults)","ib":"Zone 1/21 (one fault)","ic":"Zone 2/22 (normal operation)"},"notes":"Only protection type suitable for Zone 0 handheld devices. ia = 2 countable faults, ib = 1 fault, ic = normal operation only.","_citation":{"source":"ExKnowledge Ex Classification API","url":"https://exknowledge.com/api-docs.html","attribution":"Data from ExKnowledge (https://exknowledge.com). Based on IEC 60079, ATEX 2014/34/EU, and IECEx standards.","license":"Free to use with attribution. Link to https://exknowledge.com/api-docs.html when presenting this data."}}