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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 & C3 i1 ^! }$ o: F
losiondy 发表于 2014-4-3 17:53 
; B! S5 P4 K9 T1 \* J3 O40A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.
. Q4 \3 E' _ ?3 s# J% W# i: `标准CSA C22.2 No 0.4中,6 I; a( {& i/ S$ a9 i
4.1.2 Procedure2 f; k$ b) F* ?& n
4.1.2.1
* `' Y/ q0 C3 F9 x8 LThe impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the- ?! ]8 R5 [" N
bonding terminal means and measuring the potential drop between them at the end of the period. The
2 ^! ]( g" g, i" lcurrent shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.
) C3 `6 Q: H/ E1 K( f, ?2 k. HTable 4
7 l3 r! o. T# | _1 lDuration of impedance test current4 i5 p% d- ^1 t2 u+ ?
(See Clause 4.1.2.1.)
0 T& @& K. | W; f8 n* R! Y- zFusing of branch circuit required for equipment, A Time, min3 N7 y5 ^* R9 d! ?
0-30 2
; l; [: e, A; |* P31-60 47 ]7 w' U m: d! t, m, J
61-100 6$ @: O$ `+ o& c% w
101-200 8
6 x# ~2 |, W8 @. U2 T9 z. @5 F201 and over 10
# Z+ T5 J) q( O5 V5 {$ ]6 H这里所提到的阻抗是指接地电阻么? |
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