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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 5 o, U( q' ^6 Y# y8 N8 s" q$ |5 y5 q
losiondy 发表于 2014-4-3 17:53 
+ u2 }8 u8 Z' N; \6 P: ? x V40A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.
8 t4 F5 L' ?6 E' z, i4 Z标准CSA C22.2 No 0.4中，
$ h6 `- e1 b. b7 n$ m4.1.2 Procedure
% l9 o! Q' _' M# u" h4.1.2.1
, y* l+ e; `1 U/ d, e! bThe impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the
. d- f6 y9 s d \- W4 d1 E7 Lbonding terminal means and measuring the potential drop between them at the end of the period. The$ I* `# e u; ^8 l
current shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.
' o6 n) B, J/ G* w$ U- L4 }Table 4
9 _4 Q8 y u, c, l6 N( gDuration of impedance test current$ ]* M: K; V. |' p+ e
(See Clause 4.1.2.1.)
4 k6 J# O% x, O! S- a- t" }Fusing of branch circuit required for equipment, A Time, min
, R* G5 ]* F9 h# _5 |0-30 2 Z( h% ^' o+ o
31-60 4
+ q) W+ X2 P# e4 J/ g61-100 6' W4 r5 k. {: J
101-200 8
, } K |5 Z& r* o201 and over 10* p; j: \6 p( W/ o$ Q& K ]
这里所提到的阻抗是指接地电阻么？ |
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