1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS C IEC 60079 26 26： (EPL) Ga KS C IEC 60079 26:2012 2012 12 11 http:/www.kats.go.krKS C IEC 60079 26:2012 : ( ) ( ) ( ) : (http:/www.standard.go.kr) ： ：2012 12 11 2012-0690 ： ： ( 02-509-7294) (http:/www.kats.go.kr). 10 5 , . KS C IEC 60079 26:2012 i ii . i
2、ii 1 1 2 2 3 .2 4 .2 4.1 .2 4.2 .2 4.3 .7 4.4 8 4.5 8 4.6 9 5 .9 5.1 .10 5.2 10 5.3 10 6 10 6.1 .10 6.2 .10 7 .11 A( ) “ (EPL)” 12 A.0 .12 A.1 12 A.2 .12 A.3 14 A.4 .15 16 KS C IEC 60079 26:2012 17 KS C IEC 60079 26:2012 ii . , , . , , . KS C IEC 60079 26:2012 iii 2006 2 IEC 60079 26, Explosive atmo
3、spheres Part 26： Equipment with equipment protection level(EPL) Ga , . KS C IEC 60079 26:2012 26： (EPL) Ga Explosive atmospheres Part 26： Equipment with equipment protection level(EPL) Ga 1 KS C IEC 60079 (EPL) Ga , . (parameters) 2 . 1 . 2 , . 2 , (mist) , 0 . . 1 0 . (EPL) Ga ( ) . EPL Ga KS C IEC
4、 60079 0 KS C IEC 60079 . 3 KS C IEC 60079 0 . , . (KS C IEC 60079 1) (KS C IEC 60079 11) . 4 KS C IEC 60079 10 1 . 5 (： , ) . ( , EN 1127 1 ). KS C IEC 60079 26:2012 2 6 (EPL) Ga . A . 2 . . ( ) . KS C IEC 60079 0, 0 ： KS C IEC 60079 1, 1： “d” KS C IEC 60079 10-1, 10-1： KS C IEC 60079 11, 11： “i” K
5、S C IEC 60079 18, 18： “m” KS M IEC 60695 11-10, 11-10： 50 W 3 KS C IEC 60079 0 . IEC 60050 426 . 3.1 EPL A (equipment protection level) 4 4.1 4.2 , 4.3 4.6 . 4.2 4.2.1 . a) 2 4.2.2 4.2.3 b) 2 4.2.4 4.2.5 EPL Ga . , “e” “e” . 1 EPL Ga KS C IEC 60079KS C IEC 60079 26:2012 3 14 . 2 (equalization) / 4.2
6、.2, 4.2.3 4.2.4 . . 4.2.2 EPL Ga EPL Ga KS C IEC 60079 11, “ia” . KS C IEC 60079 11 “ib” 4.2.4 2 . 4.2.3 EPL Ga KS C IEC 60079 18, “ma” . KS C IEC 60079 18 “mb” 4.2.4 2 . 4.2.4 EPL Gb 2 EPL Gb 2 . . . , Ex “d” “e” . Ex “d” “e” . EPL Gb . , Ex “d” “q” . , , . (5.1 ). . “ib” . (parameters) ( , Ex “ib”
7、 “e” ) . . KS C IEC 60079 26:2012 4 a) ( ) . b) I KS C IEC 60079 0 26.4.2 . 2 . “mb” “ib” ( , , ). “ib” “e” . “e” , “ib” . “d” . “ib” “d” “ib” , “q” “mb” , “d” “px” “e” 4.2.5 EPL Gb 4.2.5.1 EPL Ga , Ga EPL Gb . EPL Ga . . a) EPL Ga b) c) (flameproof joint) . 4.2.5.2 . a) , b) . KS C IEC 60079 0 29.2
8、 “X” , . 1 mm KS C IEC 60079 0 29.2 “X” , . ( ), . 1 1 mm “ib”, (flameproof joint) (4.2.5.3 ). KS C IEC 60079 26:2012 5 2 / 1/10 ( , 1 mm ) . 4.2.5.1 4.2.5.3 1 mm ( 1 ). EPL Ga . 1 . 3 KS C IEC 60529 IP 67 , 105Pa(1 bar) 10 2Paxl/s(10 4mbarxl/s) . 1 4.2.5.3 1 t . i) 3 mm . ii) 3 mm t1 mm EPL Gb 1 a)
9、 . EPL Gb , , 1 a) . (flameproof joint) 1 b) 1 c) . iii) 1 mm t0.2 mm . KS C IEC 60079 11 “ib” 1 a), (flameproof joint) EPL Gb 1 b), (flameproof joint) EPL Gb 1 c), ) t 0.2 mm ( , ), (flameproof joint) EPL Gb 1 b). ( EPL Ga Ex “ia” (1 mm) (joint1 mm)“ia” - “ia” (e.g Ex “E”) , ( 1 mm) ( : , ) - “ia”
10、10 mmKS C IEC 60079 26:2012 6 ) 1 c). , - (feed-thrus), . 1 t i) t 3mm： ii) 3 mm t1 mm iii) 1 mm t0.2 mm (“X” ) iv) t0.2 mm (“X” ) a) EPL Gb ( , ) “ib” . b) EPL Gb EPL Gb ( , ). c) EPL Gb EPL Gb (flameproof joint)( ) a (flameproof joint) . 4.2.5.4 (flameproof joint) . a) KS C IEC 60079 1 1 . EPL Ga
11、EPL Ga aa EPL Ga a aKS C IEC 60079 26:2012 7 b) a) . 2 , 40 mm PTFE- . 17 mm (shaft joint) ( , PTFE- ). KS M IEC 60695 11-10, V 0 , , PTFE . . 4.2.5.5 . 10 mm 50 % , (mist) . 4.2.5.1 4.2.5.3 1 mm , KS C IEC 60079 1 (shaft joint) ( 2 ). 10 mm . a 1 2 (shaft joint) 4.2.5.4 . 2 . 2 (shaft joint) 4.3 4.
12、3.1 . . 4.3.2 EPL Ga (t mm) ： Ex “d” 50 % - “ia” (KS C IEC 60079 1 ) (10 mm)aKS C IEC 60079 26:2012 8 . 4.3.3 / (KS C IEC 60079 0 ) . . , , , . 4.4 KS C IEC 60079 0 (charging) . 4.5 4.5.1 . EPL Ga ( , ). KS C IEC 60079 0 7.3 . a) 4.5.2 b) 4.5.3 c) 4.5.4 KS C IEC 60079 0 29.2 X- , . 4.5.2 0 (EPL Ga)
13、KS C IEC 60079 0 4 . , , , , . a) IIA IIB 3 mm b) IIC 1 mm 4.5.3 . a) IIA, IIB 2 mm b) IIC 0.2 mm KS C IEC 60079 26:2012 9 0 (EPL Ga) KS C IEC 60079 0 4 (mesh) . 1 . 2 . 4.5.4 . 1 G . 1 cm2 KS C IEC 60079 0 26.13 . KS C IEC 60079 0 29.2 X- ( ) (7. ). 4.5 KS C IEC 60079 0 . 4.6 EPL Ga . a) EPL Ga . b
14、) EPL Ga . 0 (IP67) (flameproof joint)(KS C IEC 60079 1) . 1 , 4.2.5 , 0 KS C IEC 60529 IP67 . . 2 . a) b) c) 3 0 ( , , ), . 5 KS C IEC 60079 26:2012 10 5.1 EPL Gb . 4.2.4 2 1 2 . 5.2 4.2.5 ( , ) . 5.3 2 . EPL Gb EPL Gb . 6 6.1 EPL . EPL Ga “/” EPL “/” . 2 “/” . 4.2.4 “ ” . 6.2 a) EPL Ga . Ex ia IIC
15、 T6 Ga Ex d e IIB T4 Ga b) KS C IEC 60079 11 “ia” , EPL Ga , . Ex ia Ga IIC 1 . c) EPL Ga (/) . . Ex d IIC T6 Ga/Gb Ex ia/d IIC T6 Ga/Gb 2 EPL Gb “d” (compartment) EPL Ga “ia” Ex d e / d IIB T4 Ga/Gb KS C IEC 60079 26:2012 11 3 EPL Gb “d” (compartment) EPL Ga “d” “e” 2 . . 7 . KS C IEC 60079 26:2012 12 A ( ) “ (EPL)” A.0 (EPL) . EPL
