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tianchi0305 & k; h: \* @2 ?* K, w* ^
你好,
& ~ }8 H1 x" l' H. k你的意思是到底需要接地还是不需要?...
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: C% z3 q' n2 I$ [8 Y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),
' E( ? h- G, a6 V+ K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.1 a% o3 s& `3 x
- A# I0 b3 D. s, ]# h5.21 Grounding and bonding
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5.21.1 Commercial equipment shall be grounded, except equipment that
8 g6 z; O3 W+ k) N# G5 m(a)does not have “exposed”* conductive parts that can become energized; and ) E" \6 E1 r# P
(b)complies with the requirements of Clause8.5.5 v: B6 a/ I' f! L; R5 P
*”Exposed” is determined by the requirements of Clause5.3 |
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