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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 . {5 R( w& J, P; c
losiondy 发表于 2014-4-3 17:53  4 f) w- W: E) X I E: l, F0 @ t1 F+ ~
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，4 K0 F' W/ w/ b- V1 Z/ R5 }
4.1.2 Procedure i. a& c, Y% [3 y6 i0 `
4.1.2.1: @) m. V) q. T0 H0 g
The impedance test shall be conducted by passing a 60 Hz current from a part to be bonded to the
1 q1 D( O* L) Y4 m# {bonding terminal means and measuring the potential drop between them at the end of the period. The# K/ c: u( D/ @8 Z; Q
current shall be as specified in Clause 4.1.2.2 and of the applicable duration specified in Table 4.) I7 l. ^. J0 p m5 \$ W e3 h8 r
Table 4" F# w$ Q# ^5 K
Duration of impedance test current) v" U/ Q& f" b5 x! j
(See Clause 4.1.2.1.)
7 l: ?% O" ]6 S( {Fusing of branch circuit required for equipment, A Time, min
1 O; V" k: _* ~5 n( m- l/ v0 w0-30 2( I/ W1 u1 f, S. q M2 D+ a
31-60 4, D* K* W% G4 w$ O) c% ?- ]
61-100 64 `: M D4 K! a0 e* P2 p
101-200 89 k4 ]8 E p5 s# Q' i
201 and over 106 b9 Z' }$ {0 y4 q; H# V
这里所提到的阻抗是指接地电阻么？ |
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发表于 2014-4-3 11:19
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