1、KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2006 12 7 http:/www.kats.go.krKS C IEC 61241 14 14: KS C IEC 6124114:2006 (2011 )C IEC 61241 14: 2006 : ( ) ( ) () ( ) : (http:/www.standard.go.kr) : : 2006 12 7 : 2011 12 28 2011-0694 : : ( 02-509-7294) (http:/www.kats.go.kr). 10 5 , . ICS 29.260.20 KS C IE
2、C 14: 61241 14: 2006(2011 ) Electrical apparatus for use in the presence of combustible dust Part 14: Selection and installation 2004 1 IEC 61241 14 Electrical apparatus for use in the presence of combustible dust Part 14: Selection and installation . 1. . KS C IEC 61241 , . . , . . . ( , ) . . . .
3、, . . . . . 2. . . KS C IEC 60364( ) KS C IEC 60364 4 41 4 41: C IEC 61241 14: 2006 2 KS C IEC 60529 (IP ) KS C IEC 61024 1 1: KS C IEC 61024 1 1 1: 1: A: KS C IEC 61241 0 0: KS C IEC 61241 1 1: KS C IEC 61241 10 10: KS C IEC 61241 18 18: KS C IEC 61558 1 , 1: 3. . KS C IEC 61241 0 . 3.1 (area) 3 3.
4、2 (bushing) 3.3 (certificate) , , 1. . 2. IEC (IEC Ex Accepted Certification Body), , , 3 . 3.4 (combustible dust) , 3.5 (conductive dust) 103 m , 3.6 (dust) (ISO 4225 ) 3.7 (dust-protected enclosure) . 3.8 (dust-tight enclosure) 3.9 (dust excluding enclosure “tD”) 3.10 (electrical apparatus) , , ,
5、, , , . 3.11 (encapsulation “mD”) 3.12 (equipotential bonding) C IEC 61241 14: 2006 3 3.13 (Ex component) , 3.14 (explosion protection) 3.15 (explosive dust atmosphere) , , IEV 60426 02 04 3.16 (hazardous area) / / . 3.17 (ignition source) , , , 3.18 (intrinsic safety “iD”) , , . 3.19 (instrument) ,
6、 3.20 (minimum ignition temperature of a dust layer) IEC 61241 20 1 3.3 3.21 (minimum ignition temperature of a dust cloud) IEC 61241 20 1 3.5 3.22 (maximum surface temperature) . . 3.23 (maximum permissible surface temperature) , . 6.3 3.24 type of protection “pD”(pressurization) 3.25 (pyrophoric)
7、(: ) (: , ) 3.26 (source of release) 3.27 (type of protection) 3.28 (verification dossier) 3.29 , (wiring, open) 3.30 “X”(“X” symbol) C IEC 61241 14: 2006 4 “X” “U” . 3.31 “U”(“U” symbol) “X” “U” . 3.32 (zones) / 3.33 20 (zone 20) 3.34 21 (zone 21) , 3.35 22 (zone 22) , , 4. KS C IEC 60364 , . 20 .
8、4.1 (IEC 61241 17). 4.2 ( , , ) . 4.3 . , . , . 4.4 , . , , , , . 4.5 . . 4.6 . , , . KS C IEC 61241 . . a) , ( ) b) KS C IEC 61241 10 c) , , . d) C IEC 61241 14: 2006 5 e) “X” / f) g) , Ex , IP , h) i) j) ( , , ) k) l) m) . . . . 4.7 , . . . 4.8 4.8.1 . , . ( B ). 4.8.2 . . . 4.8.3 , . IEC , . 4.8.
9、4 . . , . . , . (dust-free) . , C IEC 61241 14: 2006 6 / . (“dust- free”) . , . . . 1. . , . 2. ( , , , , ) . . ( , ) . , . 4.9 4.9.1 . . a) b) c) , . 4.9.2 4.9.2.1 . 6.1 . , . 4.9.2.2 , . , . . a) b) c) C IEC 61241 14: 2006 7 5. . 2 . KS C IEC 61241 10 . 6. 6.1 . a) (Ex tD): KS C IEC 61241 1 b) (Ex
10、 mD): KS C IEC 61241 18 c) (Ex iD): IEC 61241 11 d) (Ex pD): KS C IEC 61241 2 6.2 20 , 21 22 . a) (:) ( ) . , . A . b) , c) , ( ) (6.3.3 ) d) () (KS C IEC 61241 10 ). 6.3 6.3.1 20 , 21 22 20 40 . 6.3.2 20 40 . . , , . , . 6.3.3 .: “tD” A 5 mm B “tD” 12.5 mm IEC 61241 20 1 . . A . C IEC 61241 14: 200
11、6 8 6.3.3.1 A B tD ( 12. ). 6.3.3.1.1 A . IEC 61241 20 1 KS C IEC 61241 0 23.4.4.1 6.3.3.3.1 5 mm 12.2 . 6.3.3.1.2 B . IEC 61241 20 1 KS C IEC 61241 1 8.2.2.2 6.3.3.3.2 12.5 mm 12.3 . 6.3.3.2 / 2/3 . Tmax=CL32T TCL . 6.3.3.3 6.3.3.3.1 A 5 mm KS C IEC 61241 0 23.4.4.1 5 mm 75 . Tmax= T5 mm 75 T5 mm 5 mm . 5 mm , 50 mm 5 mm A . 5 mm 250 ( 1 ) . 50 mm 6.3.3.4 . IEC 61241 20 1 . C IEC 61241 14: 2006 9 . 1 5 mm 250 . 6.3.3.4 . 6.3.3.3.2 12.5 mm B KS C IEC 61241 1 8.2.2.2 12.5 mm 25 . Tmax= T12.5 mm 25 T12.5 mm 12.5 mm . Tmax 6.3.3.3.1 Tmax . 6.3.3.4 , . KS
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