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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 9 P% O# U! b( }/ C
losiondy 发表于 2014-4-3 17:53 
( F4 Z4 j& y% _; e7 l4 ~3 u# X) p( u H40A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，
" {# C" b* N4 z3 \9 Y8 _! [4.1.2 Procedure
$ D4 Q9 ]' g' K+ }4.1.2.1: m0 D& l- F d: E. f
The impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the/ p7 `1 n4 t8 D4 U2 A* B
bonding terminal means and measuring the potential drop between them at the end of the period. The' ]" e* c5 i+ c' D& m
current shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.
7 P" Y, j$ x' B/ G$ X( k4 h& P, KTable 4# q3 z5 b8 ]" A) a
Duration of impedance test current, d. v6 q7 d- @* l
(See Clause 4.1.2.1.)
8 ]; w& v# T& ?- P: zFusing of branch circuit required for equipment, A Time, min
3 j) u4 w" l, v0 u0-30 20 v; G9 }( c& z) P3 P
31-60 4$ l1 f1 J. h; s
61-100 6
. x* t2 Y+ U4 t/ q& D101-200 8 l8 p( j) J$ g% ]
201 and over 10+ c5 T8 s# Q1 C: V/ J
这里所提到的阻抗是指接地电阻么？ |
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