|
楼主 |
发表于 2014-4-24 10:25
|
显示全部楼层
本帖最后由 hgf397556998 于 2014-4-24 10:49 编辑
2 U; X7 e8 k9 f( F# W6 jlosiondy 发表于 2014-4-3 17:53
- \# e; _! Z" ^) b) ]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.
+ M" ]9 i% H3 W4 B标准CSA C22.2 No 0.4中,
: g# k. O3 T% C, T ^' Y4.1.2 Procedure
# T o* m" G: w4 `# ?4.1.2.1! b9 d3 Q A8 b' V% p U/ I, j
The impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the, d. A' I" E+ O0 Y
bonding terminal means and measuring the potential drop between them at the end of the period. The
+ Z4 e+ F3 c+ r" l. O( Bcurrent shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.9 z% c3 `+ v; _5 L
Table 47 b$ i! \) c" a0 V" g8 B4 W1 Q
Duration of impedance test current0 W0 U- V, U1 V
(See Clause 4.1.2.1.)
0 `% N: K6 n& J+ D. n% UFusing of branch circuit required for equipment, A Time, min% i* F# E; D. t- ?
0-30 2
! x0 V/ L4 a% Y# C1 H% T31-60 4) N2 n! G o1 \9 U
61-100 6% O( u$ V+ \) N
101-200 84 s6 S { |+ G
201 and over 10& p8 A6 d3 m$ @4 I5 G
这里所提到的阻抗是指接地电阻么? |
|