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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 3 ]# C5 g# T/ X+ m% l2 `* X
losiondy 发表于 2014-4-3 17:53 ; l2 I+ L1 j2 Q) A
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. & \ }5 H; F7 Z. C# o% J1 z
标准CSA C22.2 No 0.4中,
/ h! t1 x# a! u/ ~5 w- J4.1.2 Procedure/ e: ]3 k1 {% q5 K( Y P: @ \
4.1.2.1
' R+ s) @9 b' s# _! gThe impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the
+ `0 U! O( \) y8 @bonding terminal means and measuring the potential drop between them at the end of the period. The+ B& p" B! M% L. t
current shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.: M2 p0 p9 Y% j. P
Table 47 n+ A$ k9 b( r0 a8 b
Duration of impedance test current" u1 [5 y' ~5 c+ P
(See Clause 4.1.2.1.)
. i" r* c( W2 H/ ~! QFusing of branch circuit required for equipment, A Time, min. ?) b0 ] F% {5 Z# N d( t
0-30 2$ X# h) `* Z+ v. T& _. o
31-60 4
0 j9 Q1 a; P$ R) F q) T61-100 6
" T! d/ V8 e4 z( w/ I1 Z101-200 8
[! c/ a/ f: J0 l- X4 S! m201 and over 10
" M4 y# r; b. `这里所提到的阻抗是指接地电阻么? |
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