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" J2 Y M2 r. p+ A9 S《UL1472 solid-state dimming control》的5.10的limited short-circuit test短路测试
" A3 T- C1 s. x# K, ?5.10.1 six samples of a dimmer in the as-receiced condition are to be tested in series with a 30-ampere nonrenewable,non-time delay,cartridge fuse rated for branch circuit overcurrent protection on an alternating-current circuit of rated voltage capable of delivering 1000 amperes peak when the system is short-circuited at the testing terminals。后面省略" n$ A v9 \3 @
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5.10.2 each sample is to be installed in a metal flush-device box mounted in the fixture illustrated in figure 3,and covered with a metal flush-device cover plate,unless a noninterchangeable cover is provided with the dimmer.the enclosure and any otherexposed dead metal are to be connected to ground through a 15-ampere nonrenewable,non-time delay,cartridge fuse rated for branch circuit overcurrent protection. 后面省略0 \! ?, D7 Q, b9 `4 g
请教这个短路测试该怎么理解，怪我英语不好理解起来真困难。
+ e; s3 m; T( ]; w" @2 O$ K- S; V我这样理解不知道对不对：. U7 a f- n% g0 G, y3 s
（1）先把调光器串联一个30A不可恢复无延迟的cartridge fuse,在连到1000A的电流源上，短路测试端子。
3 d4 B, Q; ]) p/ ?9 H（2）调光器安装方式：安装到metal flush-device box里，表面用metal flush-device cover plate覆盖。外壳和任何暴露的金属部件通过15A不可恢复无延迟的cartridge fuse连接到地。$ S3 P, }5 X* t" _( x' R
$ S% ]& C/ Y+ k+ ]6 \- f( _- d如果是按照我上面这样理解的，那连通了1000A的电流源后，串联的30A保线丝不是一下就断了吗？还使用1000A的电流源做什么用？？？而且这个1000A的电流源也太大了吧。) e7 u0 Y6 { t2 \- b9 T: M( T
还有metal flush-device box和metal flush-device cover plate.究竟是什么东西？？？
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发表于 2013-5-22 11:41
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发表于 2013-5-22 12:18
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