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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 1 F" P, |# a. N" J" L( C
losiondy 发表于 2014-4-3 17:53  ' }* Y$ T( `2 P: A8 l
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.
标准CSA C22.2 No 0.4中，
- d& c4 C$ F- H& a8 x4.1.2 Procedure
' p1 _/ _; L1 j0 l n3 ~4.1.2.1. O' a4 D8 f0 M5 H6 e3 G$ {. |
The impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the
# X4 D8 n: G3 T0 l6 k o9 _( }bonding terminal means and measuring the potential drop between them at the end of the period. The% u; {, q5 k* Y0 G' t/ n; ?
current shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.
) t6 y( h& q( ?2 I9 L1 @7 _& ]) ^Table 49 O- S# ]- j6 Q0 t' F, p
Duration of impedance test current! D# q. P+ b4 X0 \
(See Clause 4.1.2.1.)0 [) G$ d9 O# G, k& R6 e
Fusing of branch circuit required for equipment, A Time, min8 t9 ^) X, t; B
0-30 2
8 ?! h9 c, S' @5 B) f31-60 4
9 W' g! V) Y2 _9 {61-100 6; y V8 @1 G j- y& C$ {% n
101-200 83 T- [2 o9 R: l, D; l$ {
201 and over 10. T# y6 ^4 m4 u# v5 t# @- I, t
这里所提到的阻抗是指接地电阻么？ |
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