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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 [+ |6 @2 Q# N5 \$ \6 O& y/ J" [5 b
losiondy 发表于 2014-4-3 17:53 
+ g; H: m) U4 \7 A5 {3 h40A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. ! T! P" r' v# ~. T% ]* w
标准CSA C22.2 No 0.4中,( d5 k- [+ U! J# `" X, o
4.1.2 Procedure0 \' J3 S# }: `4 O, ~" `: P
4.1.2.1% p" J/ T0 @* h# B
The impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the: X# @1 l* _# l7 s0 B8 \1 N8 A8 W1 Q
bonding terminal means and measuring the potential drop between them at the end of the period. The
' [, e1 t2 g& f% U7 Z& b" Ucurrent shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.- q" l& o& h1 {$ s* R4 a( o
Table 4& W( Y( I w$ }/ J+ b3 S' I
Duration of impedance test current" P# P- P* c$ T9 P) e$ w& D
(See Clause 4.1.2.1.)
0 L! ]) R" R1 IFusing of branch circuit required for equipment, A Time, min
/ o/ [+ h# Y/ k/ F; D0-30 22 F! t% n( a+ s, W1 P& q* ~
31-60 4
6 u/ @- j9 ~/ Z! }" W2 i \61-100 6
! z" K* e- |# ]! Q* U( W' D101-200 88 o) v' O1 g' B8 u" P0 t O
201 and over 107 z3 z! F' d; d- Q
这里所提到的阻抗是指接地电阻么? |
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