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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
, y2 `3 w# H* G2 B/ Wlosiondy 发表于 2014-4-3 17:53 
$ j$ `8 @6 M3 I40A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. 4 ~" p! f- E! I; l) p; D/ V. ]
标准CSA C22.2 No 0.4中,
9 g: \) d# x! c9 V7 d9 D* g% B4.1.2 Procedure- s; J& K# E3 @' ~' j' Z6 o
4.1.2.1 i) z1 i& P I
The impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the |" z& G1 Z$ O& Z2 N. @7 `
bonding terminal means and measuring the potential drop between them at the end of the period. The
* X4 h+ p* I5 I. Ycurrent shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.
/ h0 t" j+ `: e0 A }3 NTable 4 Q# r1 l) r; A% c
Duration of impedance test current
+ ~/ d& I( N! t% c(See Clause 4.1.2.1.)* F4 o, N( n" h7 F. z
Fusing of branch circuit required for equipment, A Time, min
" r3 @2 I$ s7 E# a" _; [0-30 2
! G( x" N" c" t% U$ W3 h9 v31-60 4
. S8 v7 j) J2 q4 d* Q0 G61-100 60 b P1 e5 m4 U1 _% n4 A
101-200 8+ i3 f; k& g! o7 x2 N
201 and over 10
8 X6 |& v3 G3 I2 }7 ~0 e2 h这里所提到的阻抗是指接地电阻么? |
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