1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS C 4808 KS C 4808:2011 2011 5 20 http:/www.kats.go.krKS C 4808:2011 : ( ) ( ) ( ) : (http:/www.standard.go.kr) ： ：2000 8 30 ：2011 5 20 2011-0128 ： ： ( 02-509-7294) (http:/www.kats.go.kr). 10 5 , . KS C 4808:2011 i .1 1 1 2 1 3 .1 4 .6 4.1 .6 4.2 .7 5 7 5.1
2、 7 5.2 8 5.3 .8 5.4 8 6 8 6.1 8 6.2 9 6.3 9 6.4 9 6.5 .9 6.6 9 6.7 9 6.8 10 6.9 10 6.10 .10 6.11 .10 6.12 .10 6.13 .11 7 11 7.1 .11 7.2 .12 7.3 12 8 .12 8.1 12 8.2 13 8.3 .14 8.4 .15 8.5 .17 8.6 .21 8.7 23 8.8 .24 8.9 24 8.10 .25 KS C 4808:2011 ii 8.11 28 8.12 28 9 .28 9.1 28 9.2 28 A 31 B 32 C33 D3
3、4 E 36 F 37 KS C 4808:2011 .39 KS C 4808:2011 Polymer-housed metal-oxide surge arresters without gaps for distribution line , IEC 60099 4, Surge arresters Part 4： Metal oxide surge arresters without gaps for a.c. systems , IEEE Std C62.11, IEEE Standard for metal oxide surge arresters for alternatin
4、g current power circuits . 1 36 kV . 2 . . ( ) . KS C 0901, KS C 4610, KS C 4616, KS C IEC 60060 2, 2 ： KS C IEC 60099 4, 4 ： KS C IEC 60270, IEC 60707, Method of test for the determination of the flammability of solid electrical insulating materials when exposed to an igniting source IEC/TR 60815,
5、Guide for the selection of insulators in respect of polluted conditions IEEE 1024, Recommended practice for specifying distribution composite insulators JEC 217, 3 3.1 (gabless metal-oxide arrester) KS C 4808:2011 2 . 3.2 (non-liner metal-oxide resistor)( ) , - . 3.3 (internal grading system of an a
6、rrester) ( , ) . 3.4 (grading ring of an arrester) . 3.5 (section of an arrester) , . . 3.6 (Ur) (8.5 ). . 10 . 3.7 (Uc) . 3.8 . 3.9 (disruptive discharge) . , , . . . 3.10 (puncture) KS C 4808:2011 3 3.11 3.12 (impulse) . , , , . 3.13 (T1) (T2) T1/T2 . s . 3.14 1 s , 20 s . 0.9 s 1.1 s . , 8.3 . 3.
7、15 8/20 s 7 9 s, 18 22 s . , 8.3 . 3.16 . , , , . 3.17 . . 3.18 3.19 KS C 4808:2011 4 3.20 - - . 10 % 90 % . 1 . 2 10 % 90 % . 3.21 (T1) 10 % 90 % (s) 1.25 . 10 % 90 % . 3.22 (virtual steepness of the front of an impulse) 3.23 (T2) (s) . 3.24 90 % . 3.25 10 % . , 10 % . 3.26 (peak value of opposite
8、polarity of an impulse) , . 3.27 . 3.28 (In) (3.15 ) 3.29 4/10 s KS C 4808:2011 5 . 3.30 30 100 s , 2 . 3.31 . , . . . 3.32 ( ) . . (cm2) 0.05 1 mA . 3.33 (Uref) 2 . 3.34 (Ures) . “ ” . 3.35 - - 6.9 . 3.36 (prospective current of a circuit) . 3.37 a) 8.3.1 KS C 4808:2011 6 b) 8.3.2 - . c) 8.3.3 . 3.
9、38 (thermal runaway of an arrester) . 3.39 (thermal stability of an arrester) , . 3.40 . . 3.41 , . . . 3.42 , . 3.43 . 4 4.1 . a) b) KS C 4808:2011 7 c) d) e) ( ) f) , , g) , . (class 1) , IEC/TR 60815 4.2 1 . 1 10 000 A 5 000 A 2 500 A 1. Ur(kVrms) Ur36 2. 8.2.4, 8.2.5 8.2.4, 8.2.5 8.2.4, 8.2.5 3.
10、 a) b) c) E.1 8.3.1 8.3.2 8.3.3 E.2 8.3.1 8.3.2 E.2 8.3.1 8.3.2 4. 8.4.2 8.4.3 8.4.3 5. a) 8.5.4 6 8.5.4 6 8.5.4 6 6. - 6.9 6.9 6.9 7. 8.8 8.8 8.8 8. 8.6 8.6 8.6 9. 8.9 8.9 8.9 10. 8.10 8.10 8.10 11. 8.11 8.11 8.11 12. 8.12 8.12 8.12 13. ( ) 8.7 8.7 8.7 14. F 5 5.1 (kVrms) 2 . KS C 4808:2011 8 2 kVr
11、ms kVrmsk Ur /n , n (Uref kUr /n , . ). 8 8.1 1 . a) (6.1 8.2 ) . b) (6.3 8.3 ) . c) (6.7 8.4 ) . d) (6.8 8.5 ) . e) (6.10 8.6 ) . f) (6.12 8.7 ) . KS C 4808:2011 13 g) ( F ). h) (6.4 8.8 ) . i) (6.5 8.9 ) . j) (6.11 8.10 ) ( ) . . , . 8.2 8.2.1 a) . , . b) 6.1 . . 8.2.2 a) . b) . 8.2.3 KS C 0901 .
12、8.2.4 a) KS C 0901 . b) 15 . , 15 2 . c) 1.3 . d) 500 kV/m . 8.2.5 a) , . b) 2 500 A, 5 000 A 0.88 1 . c) 10 000 A 1.06 1 . KS C 4808:2011 14 8.3 a) 6.3 . 0.01 2 . b) . . c) . . . d) 3 . . 8.3.1 20 ns , . 8.3.1.1 3 . 8.3.1.2 5 % 8.3.1.3 a) 1 s10 % b) 20 s 8.3.1.4 . 8.3.2 0.5, 1, 2 - , . 0.5, 1, 2 0.
13、01 0.25 . 8.3.2.1 KS C 4808:2011 15 3 . 8.3.2.2 a) 8 s( ： 7 9 s) b) 20 s10 % 8.3.2.3 . 8.3.3 . 3 . 8.3.3.1 3 . 8.3.3.2 3 5 % . 8.3.3.3 a) 30 100 s b) 2 8.3.3.4 . 3 A 10 000 A 1 125 500 8.4 8.4.1 a) 3 kV , 6 kV . b) . c) 20 15 K . d) . e) 18 . KS C 4808:2011 16 8.4.1.1 , 3 . 8.4.1.2 3 6 18 . 8.4.1.3
14、50 60 , . 8.4.1.4 a) , 5 % . b) , . 8.4.2 10 000 A 4 . 4 10 000 A Z() T(s) UL(kVd.c) 10 000 A 1 4.9 Ur* 2 000 3.2 U*r* Ur： (kVrms) (W) 4 . W Ures (UL Ures) 1/Z T Ures 3 3 . . a) 4 100 120 % . b) 150 % . c) (overshoot) 10 % , . d) 90 110 % , 100 110 % . KS C 4808:2011 17 e) 1 2 . 8.4.3 5 000 A 2 500 A . a) 5 100 120 % . b) 150 % . c) (overshoot) 10 % , . d) 5 90 110 % , 100 110 % . 5 5 000 A 2 500 A A T s 5 000 A 2 500 A 75 50 1 000 500 8.5 8.5.1 a) . b) 1 %
