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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 R' M3 t( {8 v, y& y- q2 R' ?4 a
losiondy 发表于 2014-4-3 17:53 
: r0 \9 I! E/ B5 O, |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.
+ Q9 c w. Q$ O8 F标准CSA C22.2 No 0.4中,
" w# a C& m: B) O4.1.2 Procedure
) v3 |* x# T, r% {4.1.2.1
5 l* {; h! \6 d. m @4 rThe impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the
/ A7 G5 a+ j; i! L1 b' vbonding terminal means and measuring the potential drop between them at the end of the period. The
9 E% f. O- I/ o" q" n& A. X) J2 U) f* acurrent shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.
( ~# @3 z% i$ `( e- G6 DTable 4. z: @; {0 N. Y5 ]3 B+ C
Duration of impedance test current# z) S/ _( U* i' p
(See Clause 4.1.2.1.). [2 Z# K, _- k( `. q4 g5 _, @, f
Fusing of branch circuit required for equipment, A Time, min' B; ^# l0 n* _/ y
0-30 2
i& n, h0 ?/ K7 {7 V31-60 4
4 S3 D1 m8 X& b4 U4 I7 I4 M61-100 6
( |( b+ } Q- h, z" V! S101-200 8
0 L2 g' C! e! c. y! D6 p! b201 and over 10
/ ]$ f, M0 m0 {$ `0 F, c, T1 ~这里所提到的阻抗是指接地电阻么? |
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