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6 h K9 a* p& x% M5 J% m7 q0 h | Components/ e0 X) b; K7 X" [. }; ?
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* _; l* a$ @6 }3 z( V8 O7 `: T | 61010-1(ed.1);am1;am2
1 |) b n" h. ?$ @: Y: @ |
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Standard:
' U& `% O1 S/ B5 |3 K9 x5 bIEC 61010-* G. E7 u! M+ J! W% M
1:1990+A1:1992+A2:1995/ a1 J! D* k; E* O: {
Sub clause:: d0 R4 q" X& |9 R4 \: V9 g
14
7 s) d) s6 n. v$ [/ M+ V( ?+ JSheet n. 311
1 u9 U1 a8 j9 S- W/ h" m, Y. r, F) ePage 1(1)
0 \; W4 J3 D6 Q Z6 m/ g$ qSubject:
1 {- z d0 I. P# K( D: l3 l" QComponents
9 ]+ K7 d2 w6 j; lKey words:
1 i7 e: D: D; O) O2 }" f- Installation
7 {, [4 v. w2 ]- Category
% z6 m# Z! F V# A; dDecision taken by
, |* f' E% M1 u* ~, I8 i0 \ETF3 and confirmed
0 O6 ]: N Q! C; wby CTL at its 38th
2 l8 p+ S' N. a' \meeting, in Toronto
( n" q6 E3 |: D+ p* ZQuestion:
8 R a1 S" Q' v/ Y, ZWhere equipment is fitted with surge protection devices, is it acceptable for the circuits
4 o# x( Q+ V7 p" n5 Bfollowing the device to be a lower category than those preceding it?
9 E2 w4 k& e* P2 xDecision:
4 M4 y2 J4 m- W& k- mIt is acceptable, for example, for a Category III equipment to have circuits at Category II4 V) Q) D6 }5 a }% Y5 [
following such a device.
1 g" ?9 ~8 p/ f6 R; KExplanation:% _# ~8 I% q0 j4 @2 P# D
The action of these devices is to remove excessive voltage spikes from the circuit and, v& v5 V# ? [9 }( [
therefore, the Category of the circuit may be reduced accordingly. IEC 664 does have more
2 i; S) | j, G! m& { \4 o( c- Ttests to allow this. 5 sec. “spike” will destroy surge protection5 X; {! ]" n# y' }) {$ {$ u( F
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