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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 4 ?; u% \$ V. B) r& C1 ]
losiondy 发表于 2014-4-3 17:53 
' G1 M+ q& k$ F! n6 {0 U40A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 Z# B标准CSA C22.2 No 0.4中,6 j2 [, K# s, q' D* X9 ]/ e0 e
4.1.2 Procedure
' T& m4 p ?0 M' L! U; W2 n4.1.2.1
: \! r7 L2 B! X I2 y5 _( V# v# zThe impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the, Y4 J- X' Q9 x3 A" k
bonding terminal means and measuring the potential drop between them at the end of the period. The; Y" z6 l8 v) v- \. i3 n C
current shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.
3 @9 N6 R, g( k8 UTable 4
T/ U7 Q1 S4 n" ~5 J9 CDuration of impedance test current5 j: P* P& H( q3 q
(See Clause 4.1.2.1.)
2 l3 ?& R# P B6 |2 B' R2 C# I ~Fusing of branch circuit required for equipment, A Time, min
- G! r4 T: L) R* b' c! n0-30 2
7 T4 A9 [9 @) S1 f31-60 4
4 p* u. b5 `; g1 F61-100 6* j5 c/ S3 r3 S5 C+ ]
101-200 81 \! N$ j6 v& _4 i& I
201 and over 107 n$ f. j! ~' L% u" o; K
这里所提到的阻抗是指接地电阻么? |
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