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- k6 [5 W! }# H' M) M* o | | Overcurrent Protection, Note
* [9 O; j: b( R+ Y6 L | 9.6
* A' b% Q% v- [, H: V; | | 61010-1(ed.1);am1;am2
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Standard:( ~, G. ^8 \6 v, Q2 g. J# n
IEC 61010
9 ~$ o9 c. \+ i; L1 ESub clause:" A3 K0 v2 p* j5 |9 l
9.6
$ ~( [3 I* m& U' ]Sheet n. 309, H4 [ D8 I% r( u
Page 1(1)
3 F/ ^; w; B3 m6 K0 K% m/ u, KSubject:
+ ]7 A s. C) p/ G8 W9 J. D: iOvercurrent Protection, Note$ u. X z/ E! L; f5 c
Key words:; v2 C2 u V o3 {7 Q$ H
- Mains
, S% p; H; `! j- Fuse
0 j" E1 `. P- J2 U& Y. cProvisional decision taken by ETF3 and confirmed by CTL at its 38th meeting, in Toronto3 y9 e: t* I& v
Question:
, {" l8 `. F+ n6 a- R7 AThe note recommends that both supply conductors are fused. How is this recommendation applied?3 y& q3 M8 U; W0 n1 d: x
Decision:
: Z! y# n& ]9 ?0 lThe standard allows the use of a single fuse and therefore, under CB rules this is accepted.
1 _$ g9 U7 _' i$ ]* I- q7 Z' FExplanation:/ u- v, n' r0 c ^- A
Where a supply is not polarised then equipment employing earthing for protection should be provided with a fuse in both mains conductors.
: P2 l( X/ G2 {* wEvaluators are requested to draw the attention of submittors to this situation and make an informative note in the report as appropriate.' |. S/ V4 L8 O9 _' ^! I
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发表于 2012-9-19 14:49
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