1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS C 0304 1 KS C 0304 1:2009 2009 12 30 http:/www.kats.go.krKS C 0304 1:2009 : ( ) ( ) FITI () ( ) : (http:/www.standard.go.kr) : :2009 12 30 2009-0972 : : ( 02-509-7294) (http:/www.kats.go.kr). 10 5 , . KS C 0304 1:2009 i .1 1 1 2 1 3 .1 4 2 4.1 (Magnetizin
2、g condition)2 4.2 2 4.3 .3 5 .3 5.1 .3 5.2 .3 5.3 3 5.4 .4 6 5 6.1 .5 6.2 .5 6.3 5 6.4 .7 7 7 8 .7 KS C 0304 1:2009 .8 KS C 0304 1:2009 Test method of magnetic shielding effectiveness in SLF range . (wave) (field) . KS C 0304( ) . 1 (30 Hz 300 Hz ) . 2 . . ( ) . KS C IEC 60050 151, 151: KS C IEC 604
3、04 1, 1: KS C IEC 60404 8-6, 8-6: IEC 60050 121, International Electrotechnical Vocabulary Part 121: Electromagnetism IEC 60050 221, International Electrotechnical Vocabulary Chapter 221: Magnetic materials and components 3 . 3.1 (MSE: Magnetic Shielding Effectiveness) MSE B1 B2 . 12BBMSE (1) MSE: K
4、S C 0304 1:2009 2 B1 : B2: 3.2 (SLF: Super Low Frequency) 30 Hz 300 Hz 3.3 (Helmholtz coil) , 2 3.4 (yoke) , . , . 3.5 (search coil) Faraday , (area-turns) 4 4.1 (Magnetizing condition) , , . 4.2 (demagnetize) . , . . a) 0 . 100 . t . t1 (2) : (m) : (s 1) : (m 1 1) : (Hm 1) t : (m) KS C 0304 1:2009
5、3 b) 1 , . . 4.3 (235) , (5515) % R.H. . 5 5.1 . 1 % . 0.6 m 0.3 m , 0.4 m . 5.2 . . (rms) (rms) . . V . dttdBNAtV)()( (3) V(t) : (V) NA : (m2) B(t) : (T) 5.3 1 , 2 . , . 2 BHrms Brms 1 % . BHrms KHIHrms (4) IHrms: (A) KH: (TA 1) KS C 0304 1:2009 4 BHrms: (T) 1 a) b) 2 5.4 4.2 . . B2rms V2rms . . B1
6、rms V1rms . Arms Arms Vrms VrmsKS C 0304 1:2009 5 MSE . rmsrmsSEBBM12 (5) rmsrmsSEVVM12 (6) . 0.1 % . . , B1rms . . 6 6.1 . U , , N S . 6.2 , . . 6.3 3 . 4 . . . Fmrms . KS C 0304 1:2009 6 Fmrms NImrms (7) , N , Imrms . 10 mm10 mm , 40 mm , 300 Hz 1 000 . 3 mm, 8 mm . 1.5 mm , 10 A turn 140 mm140 mm
7、 . a) 3 b) 3 KS C 0304 1:2009 7 4 6.4 4.2 . Imrms V1 . V2 . 12VVMSE (8) 0.1 % . 7 5.4 6.4 1 % . 8 . a) b) c) ( ) ( ) d) ( ) ( ) e) f) g) Irms VrmsKS C 0304 1:2009 8 KS C 0304 1:2009 , . 1 / (EMI/EMC) , (skin depth) . (30 Hz 300 Hz ) (field) . . , . . . 2 . 2000 , 2007 , , , , , , . , , (round robin
8、test) . 3 . , . , , KS C 0304 1:2009 9 . . . , , . 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KS C 0304 1:2009 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Test method of magnetic shielding effectiveness in SLF range ICS 29.030 Korean Agency for Technology and Standards http:/www.kats.go.kr
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