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ʱ䣺2017/11/28ߣadmin 4563

ӿ
(Surge Protection Devices,SPD),Ҳӿѹ,׳Ʊ
 
гϳ˸ָķ,β,һЩδ(:ýӵصı,Ϊֹ,Ūԭ),,ܱͨĹԭ,Կͻ,
 

ԪӦԿ,ӲӲӦԵķŵԪл𻨼϶(նĽͻ϶ͬŵ϶)ŵ,ӦԵķŵԪнѹ˲̬ƶЩԪڷŵӦԺͲѹ,Dzͬȱ,ﳤܶ,ϳɸֱ,·
һ𻨼϶(Arc chopping) 
1ŵ϶:
ԭţ״ĵ缫,ܶ,þԵϷֿ,缫ĵ糡ǿȴﵽǿʱ,缫֮γɵͨ·׵粨ʱڼ϶,ʹ϶Ŀ,γɶ·,׵ͨ϶,ʱ϶˵ĵѹܵ,Ӷﵽ·Ŀ糡ǿȵڻ϶ʱ,ŵ϶ͱָֻԵ״̬ڸѹ·ı׷ڵѹϵͳ,
ڵԴǰ𻨼϶ͱƷ,Ƴɵ缫IJ϶뼰Ե
ŵ:
кǿŵͨ,10/350s岨ܹ赼50KA,8/20s,Դ100KA,ܸߵľԵԼСļ,©С豸κкӰ
ȱ:
ѹ(2.5~3.5KV),Ӧʱ䳤(Q100ns),ѹȽϵ,йƵ,ڱ·Ӧһ۶,ʹùƵѸٱж
ע:ֻŵֱܷװһ·,ʱ᲻ͬʱŵ,ʹֵ֮λ,Ϊʹϵķŵܽӽͳһʱŵ,֮ĵλ,ŵԿֻŵܺϲһ𹹳ɵŵмһΪ,ֱڻ·
2ŵ(Gas discharge tube,GDT):һմɻװ,ٳһѹĶ(),͵ıԪ
,ж缫缫ֽṹ糡ǿȴﵽǿʱ,϶ŵ,ӶƼĵѹ8/20sܹ赼10KAŵѹȶ,ѹ12Vѹ100mAʱ,ͨڲڼ·͵ݴ·
 
ѹ(Metal oxide varistor,MOV):  пΪҪɷֵĽ뵼Ե,ڵ˵ĵѹСѹѹʱ,ѹʸ״̬,ڵ·,÷Ƭʶ·״̬;ѹ˵ĵѹѹѹʱ,ѹͻ,ֵֵ,ӽ·״̬ѹֱ