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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
+ ?( K. Y0 f0 s# rlosiondy 发表于 2014-4-3 17:53
# A; N Y+ Y b0 ?; \& \% Q" Q) b40A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. + |# j: |8 J- K5 ^0 ?
标准CSA C22.2 No 0.4中,% t! w& j# l7 }6 e$ c/ i6 o
4.1.2 Procedure
5 h: L3 Q, q3 g5 N- z4.1.2.18 x6 n( A2 e* L& Y
The impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the/ ?8 x/ {$ a. y' e. Y, S- f
bonding terminal means and measuring the potential drop between them at the end of the period. The
0 h: }! f5 [1 [# o" C h3 X6 zcurrent shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.4 [* p! F9 c; N
Table 43 Y) [* Z' }* n4 J
Duration of impedance test current$ G4 c3 g8 H. n4 ~
(See Clause 4.1.2.1.)+ U# r4 T. G1 H d) k
Fusing of branch circuit required for equipment, A Time, min
. `/ ~3 ]7 V7 }9 A Y& ~0-30 2
# `1 F, |7 \1 I" \ Z31-60 4
/ J- a: y9 w k& Y) C61-100 6* J$ L, B, g! l5 v7 |2 Y8 |6 O$ Q
101-200 86 D0 U `3 H" R' J k, r' k
201 and over 10; |* M' L; f0 n* P2 D
这里所提到的阻抗是指接地电阻么? |
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