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UL recognized 和UL listed有什么区别啊作者: vickywu 时间: 2011-12-29 10:31
I HOPE THE FOLLOWING EXPLAIN WILL BE USEFUL FOR YOU 9 r' v% H0 n) j+ V5 P& l) O# @ 0 i) E- f! s/ w2 s$ p! VThe UL Listing Mark is the most common certification mark seen and accepted by* D- B- a: s+ @( |9 V! Y
code authorities. Products bearing the UL Listing Mark are usually either complete % j4 q2 z C; Q' r5 uappliances, or equipment and materials that are intended for installation in accordance with 1 Y) w ~! Y& o6 f( hmodel codes such as the National Electrical Code® (NEC®). These products have been $ d% X$ D+ v6 q2 [- u; w! yinvestigated using applicable construction and performance requirements, and when installed: Z0 \! O) `# P9 C0 A
in accordance with the manufacturer’s installation instructions, should provide a safe, , P. F$ I+ p" ?code-compliant installation. The UL Guide Information for each product category typically / n! z- z6 i V+ g0 [2 m. p% T2 Yidentifies the applicable installation code.Comparing UL Listing and Component " C8 Y# d+ T* U1 ?. h" ORecognition is like comparing a car and an engine. A car is a finished product, and an 7 ^3 m% D1 B. Q7 R R: U8 n, lengine is a necessary component. However, not every engine is compatible with every2 l8 w+ T6 r5 e- V1 Y: V' C. C
car. The same is true for UL Recognized Components, which will not be compatible & @, R, \: L h+ U0 T$ B4 ~, _$ ~with all end-product equipment applications. UL’s Listing evaluation of an end product - D* ^3 x' q9 X6 N: Yincludes an investigation of the construction and performance of all installed components.作者: allen2008 时间: 2011-12-30 15:18
学习了,谢谢作者: Rock 时间: 2012-1-20 11:45
原来如此,学到了。。我也是第一次见到。。。哈