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Arc tracking test4 S9 G: ?1 f$ ?7 H; D7 O8 |
Arc tracking test
( F0 v$ O8 k& e# }( m+ I) ^9 VThe objective of this test is to simulate a phenomenon where a small electrical short or arc (caused by a number of factors) will burn the surface of an insulating material. This leaves a carbon deposit (or track) that creates a path for electricity. Repeated arcing and tracking leads to unintended current paths, high temperatures, and can potentially lead to ignition." ]# U! ~: V7 l3 d1 F% p
没见过此标准,试翻译一下:4 O2 _* T, j. {! }6 p" v
电弧起痕试验
. j* Z' Q8 c& {2 T! @0 a本试验的目的是模拟轻微的电气短路或起弧(由众多因素产生)使绝缘材料表面燃烧的现象。该现象留下产生电气通路的碳附着(或起痕)。重复的起弧和起痕导致不需要的电流通路,高温,及可能导致引燃。- r9 O! r! R F) T4 l3 w& h
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我只看过IEC 601127 E' j/ ?3 h# I2 G
可以从IEC 60112得到启发。IEC 60112中的漏电起痕失效的判断是过电流装置动作,或持久火焰。0 Y9 Z( `. c; v
而且这种失效不是因为在电极间的电弧产生的。; T, S ^7 i' g) J' c
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那么可以LZ所述测试,是让放在塑料上的电极间产生电弧。 |
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