請教在UL產品中要求的"intrinsically safe"是什麼意思?
請教高手:在UL產品中要求的"intrinsically safe"是什麼意思?
如何驗證我的產品達到了"intrinsically safe"這個要求?在哪個標準或章節中有對此的評價和定義?
(Application is a pump controller/monitor, for USA & Canada, input 85-264Vac) 应该理解为固有安全吧，比如压力死活达不到安全限值以上，对压力这一块来说就叫固有安全 这个应该是和通常讲的安全的三种层次的概念是类似的 有否標準條文對這個詞的定義和解釋? 25 Expelled parts
25.1 Where expelled parts could constitute a SAFETY HAZARD protective means shall be provided.
Compliance is checked by inspection for the presence of protective means.
25.2 A graphical display vacuum tube whose maximum face dimension exceeds 16 cm shall either be
intrinsically safe with respect to effects of implosion and to mechanical impact, or the ENCLOSURE of the
EQUIPMENT shall provide adequate protection against the effects of an implosion of the tube.
A non-intrinsically safe tube shall be provided with an effective protective screen which cannot be
removed without the use of a TOOL; if a separate screen of glass is used, it shall not be in direct contact
with the surface of the tube.
The tube shall be tested as specified in IEC Publication 65, unless a certificate of the testing is provided. 本质安全
真正安全 25 飞溅物
25. 1 如果飞溅物能引起安全方面危险.应采取防护措施。
通过检查有无防护措施来检验是否符合要求。
25.2 屏幕最大尺寸大于16 cm 的显像管‘对内爆平r~ 机械冲击的影响应是因i 有安全的.或设备外壳应对
管子内爆影响提供足够的防护O
固有安全的显像管.应备有不开!工具不能拆除的有效防护屏;若采用分离的玻璃屏‘则其不应与
显像管表!在i 直接接触。
除非提供有检验合格证.否则应按G13 8898 Itt 有关规定进行检验。 引用第4楼jackyhu68于2011-06-29 10:56发表的:
25 Expelled parts
25.1 Where expelled parts could constitute a SAFETY HAZARD protective means shall be provided.
Compliance is checked by inspection for the presence of protective means.
25.2 A graphical display vacuum tube whose maximum face dimension exceeds 16 cm shall either be intrinsically safe with respect to effects of implosion and to mechanical impact, or the ENCLOSURE of the
.......
此點應該只是intrinsically safe本質安全方面其中之一的一種表現,而不是標準定義或標準的驗證方法吧. 要求自身具体能力保证安全,不过这些安全也是后面测试验证的.不用过于强调某个词 intrinsically safe只是一種特定狀態，並沒有標准定義或解釋。
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