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发表于 2014-4-24 10:25
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本帖最后由 hgf397556998 于 2014-4-24 10:49 编辑 0 x- ^' x- E3 h) i- ^
losiondy 发表于 2014-4-3 17:53  4 g7 n. _1 j S, ?# J0 T# y3 }
40A是加拿大标准提到的：该章测试需要参考另外一个标准CSA C22.2 No 0.4.
标准CSA C22.2 No 0.4中，1 }1 |( u0 J, ]: v
4.1.2 Procedure
; g, V+ M6 \, l3 p4 }4.1.2.1
) A7 }1 b, h/ T) cThe impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the
6 V8 B9 h6 c1 y2 l1 r Ybonding terminal means and measuring the potential drop between them at the end of the period. The
# v2 @/ X" N9 R! y7 V; ^current shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.% U. X' U& R% h+ ]$ R# k: J" t% ^
Table 4/ [9 D3 s. {9 J5 Z. ~+ ]
Duration of impedance test current+ t! Q$ ]) R5 j z6 S( Z
(See Clause 4.1.2.1.)
; v- @3 T: D# C3 U! G7 K" UFusing of branch circuit required for equipment, A Time, min+ B( K: B6 N4 ^8 [' r0 s) K1 C
0-30 2/ R/ D1 g% f o. F+ J2 @ @
31-60 4
/ w& d1 @# p s6 D) q9 L0 D61-100 65 n V( M8 R* M; A' C
101-200 8
5 t6 |# W5 G# Y& H/ \# R- n7 q201 and over 10
/ @/ G8 d: \6 q% E3 Z2 x4 r( \' ~5 s这里所提到的阻抗是指接地电阻么？ |
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发表于 2014-4-3 11:19
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