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发表于 2009-9-15 21:53
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tianchi0305
5 U: V( Y, l: P5 _) T; ]7 i% W0 a你好,
! L, s" ^# w8 r* T, G/ q+ x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),
4 _$ S/ j) z8 U! z1 w# 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. Z) E* U8 x# U- E# W: Y
3 s9 R7 v/ H+ A3 J5.21 Grounding and bonding% g3 Q) O/ M* O2 v
& j% K" x% l7 B5.21.1 Commercial equipment shall be grounded, except equipment that 4 Y8 C+ T7 f8 y) C. e
(a)does not have “exposed”* conductive parts that can become energized; and # ~% J8 r2 y8 X. ^; V' }
(b)complies with the requirements of Clause8.5.. w, x5 p1 N- y% v* x' ^1 c
*”Exposed” is determined by the requirements of Clause5.3 |
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