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$ H2 H6 J' N* t4 c/ \6 U' d8 \: M0 C# M
| Components& O1 B9 C7 h5 X; H
| 14
: b( {! U' U K) a x% R p | 61010-1(ed.1);am1;am20 G; R( H4 c+ s5 o5 T/ t' p
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9 ?" I1 `# g2 }. {" I) P
; |% O3 S& t/ J& A% |% Z' e- O, uStandard:0 ~3 q' V/ ~+ `5 C3 p
IEC 61010-. e2 n& e+ h+ t) A4 M- M& [( V
1:1990+A1:1992+A2:1995 C Y ?; t# {
Sub clause:
2 `# `) T7 J" {7 x7 U+ {! n14
, u- ^2 e) M& K8 j% ~' f2 j. F, |0 ?Sheet n. 3116 U. i0 c2 a# k+ f$ x* u# Q4 J
Page 1(1)* M' Q8 t3 p% L; f8 u1 ?
Subject:/ R0 f7 x* `0 G. ~0 H! Y
Components) {5 W$ m8 _! w& r' s
Key words:8 W2 w* P/ }' a
- Installation- \, q( o) B6 V/ J" Q
- Category! g' a7 v+ s' s
Decision taken by
6 B% U% q, l* a7 G+ A. @. z4 GETF3 and confirmed O1 ?/ R, t; y& I/ i$ L8 W6 P- [
by CTL at its 38th
1 d/ \( i2 D: R# r8 E% Hmeeting, in Toronto2 B' r% u* x+ g6 d
Question:0 p8 P# v4 r. s
Where equipment is fitted with surge protection devices, is it acceptable for the circuits
1 E8 y+ M# P5 d [2 P) E' P" Bfollowing the device to be a lower category than those preceding it?2 y; ^0 q! {% ]7 @! V/ w2 O
Decision:
& O, N' [ P3 ?# q* oIt is acceptable, for example, for a Category III equipment to have circuits at Category II+ [: h0 H+ U, x5 l. Q
following such a device.' r* R; G( b3 I, q/ h6 [$ I, V0 G
Explanation:
2 P' K, Q# M! ]5 ~The action of these devices is to remove excessive voltage spikes from the circuit and
. ~; ~' q8 b* ^" o* a/ {) R0 t& Ztherefore, the Category of the circuit may be reduced accordingly. IEC 664 does have more# z: a' j) {. w: ^4 q
tests to allow this. 5 sec. “spike” will destroy surge protection/ t) k% g D9 B T% S6 e
$ H# H+ S L! g5 u# C5 j9 H2 O
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发表于 2012-9-19 14:45
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