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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 $ Z2 P+ l( U9 G% g' y J' p, i
losiondy 发表于 2014-4-3 17:53 
7 B9 S/ ?0 _- F$ @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. 9 y) Z- c8 L0 p. j. @
标准CSA C22.2 No 0.4中,
. H* ^& u* |. V Y% h4.1.2 Procedure3 b( J4 k- [( b+ F1 [+ A4 M
4.1.2.1
: ]' V' ~1 J% P2 U, [The impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the5 c( z6 v8 v3 W1 ~2 m
bonding terminal means and measuring the potential drop between them at the end of the period. The; u0 J; m4 z: ]1 K2 t& |( D, P
current shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.
1 j1 \, v& D1 N# S' x5 i5 @Table 4- Z/ I7 Y7 R5 ]7 ~
Duration of impedance test current
- y7 ]& @* d9 ?( a/ b(See Clause 4.1.2.1.)
9 E4 a5 L6 z" S5 y# ^3 l8 P/ |; X+ aFusing of branch circuit required for equipment, A Time, min
$ ~ `' l% G( l0 J$ V0-30 2
: L/ z, W9 H7 S3 f# v31-60 4
2 \, g- ~" J/ R7 R6 Y3 q61-100 64 |0 |* @2 n1 M& I: Z0 k: b
101-200 81 v J* K/ ~/ M- q' T- C }: g" T$ s" f
201 and over 10
/ P4 R8 `4 k) ~! X9 U3 ~' Y5 L$ q这里所提到的阻抗是指接地电阻么? |
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