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发表于 2009-9-15 21:53
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tianchi0305 ; v" O$ `6 W h0 z1 e* T# q
你好,5 A6 Y) x: f( Z# S
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),& i" o* c! l1 }9 n4 v* F' S& G
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.
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" X+ M w; [. ^5 k' N% f% g5.21 Grounding and bonding! J0 T k! c/ p7 r4 p1 x2 H: N
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5.21.1 Commercial equipment shall be grounded, except equipment that % Y5 u' f; x* C" {9 G
(a)does not have “exposed”* conductive parts that can become energized; and
+ x; `& x1 o/ v9 s2 V(b)complies with the requirements of Clause8.5.2 A0 \8 }/ L% S5 |% @
*”Exposed” is determined by the requirements of Clause5.3 |
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