6.2.3 A wire is considered to be mechanically secure when one or more of the following is provided:
a) At least one full wrap around a terminal,
b) At least one right angle bend when passed through an eyelet or opening, except on printedwiring
boards where components are properly inserted and soldered or mechanically secured
by design, or
c) It is twisted with other conductors.所以我要确定是不是机械固定必须按照6.2.3的a,b,c, or in a circuit containing solid-state devices
是什么情况 :D24AWG可以了。 本帖最后由 ann-fox83 于 2014-4-10 22:38 编辑
jsspace 发表于 2014-4-4 11:37 static/image/common/back.gif
请注意,非隔离的情况下,也有可能是次级线路
我做过几个这样的案子,次级的话可以减少到24AWG
非隔离也有次级线路,是什么意思?
我理解的次级要么是CLASS 2或LVLE(UL1310,UL8750)的低压部分,要么是隔离的非CLASS 2(UL1012)的低压部分。
请举个例子?
ann-fox83 发表于 2014-4-10 22:37 static/image/common/back.gif
非隔离也有次级线路,是什么意思?
我理解的次级要么是CLASS 2或LVLE(UL1310,UL8750)的低压部分,要么 ...
请参考浪子哥的点评
页:
1
[2]