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发表于 2009-9-15 21:53
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tianchi0305 b1 |" r+ A4 P9 B/ K
你好,
* T5 |. Z2 F6 p- H你的意思是到底需要接地还是不需要?...
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从标准CSA 36上看, 至少有两条路, 要么接地, 要么走下面的试验与结构判断那条路(可以不接地),, N! T7 g, Q% u" m* |9 D5 B
结构的判定重点集中在exposed的判定(依据5.3条款), 而试验则需要在集中在泄漏测量与非正常试验.8 @# d1 O4 N8 }" l
+ ~% z. ~$ Q& i+ y' c4 m P5.21 Grounding and bonding% d1 T8 I/ O% g/ J p6 T5 B
( b9 U( |9 n5 v+ b5.21.1 Commercial equipment shall be grounded, except equipment that 3 Q7 o$ [1 Y0 b' Q% q6 \5 F% z
(a)does not have “exposed”* conductive parts that can become energized; and 7 A7 j6 E; W" c+ B5 D
(b)complies with the requirements of Clause8.5.
% G, ^& f: a+ O; ~*”Exposed” is determined by the requirements of Clause5.3 |
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