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8 i* N! ?0 T$ ~, }% i
& k" ~* u- u' I* q2 z i ~ | Measuring Circuit Terminals (Amd 2)
* A% }( m, b: P5 ^% ] | 5.1.5* N8 {- W2 F' F% l2 K" A
| 61010-1(ed.1);am1;am2, C# g5 V0 K9 k6 E: {/ U
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Standard:4 P1 {2 P3 c: |8 J
IEC 61010-1:19902 o# h* l) N3 w6 E. H, d. G
+A1:1992+A2:19959 J3 g+ H6 q& y- C4 @. C; [
Sub clause:. q) v4 Z2 _" \! }2 w+ B2 {3 A
5.1.5) ?* N- X9 K) E& d7 j$ `" e+ y
Sheet n. 297+ S$ ]# h0 W2 g7 g: D* E3 s
Page 1(1)# p3 I) I; d: ]! |! w6 }
Subject:( L' l8 j( M$ n
Measuring Circuit Terminals
1 T5 E" Q6 F/ C, R2 T(Amd. 2)
3 c. H/ \" D3 g' z, K6 ^Key words:
3 J" o) Y$ l4 v! ]: ~Terminals
6 I+ f% `3 W, ^! D: O' x- d. PMarking0 [3 U" Q$ l3 A" f$ u
Decision taken by1 n1 j7 d( m5 q2 y/ b
ETF3 and confirmed
: \& O9 U( [7 e! n6 i4 d8 R, `by CTL at its 38th
' Y/ L( A- r+ g' M% T- vmeeting, in Toronto
7 F G/ d) a* \. C( p" q) CQuestion:" W! r* q2 W# @* i& m7 w
Is it acceptable for a measuring equipment to have its sensing terminals marked:
2 {5 u3 g- |; M# ?3 J6 l& Y“CAT II (600V)
7 a1 ]" m; i S! R& R0 LCAT III (300V)”. ], G4 H8 C$ z# { _' k
Decision:
6 G m& a: V6 a A6 k7 T9 tMarking with both categories with the relevant voltages as shown is acceptable.# l( v" n7 }, T( u; C: }# B
Explanation:
1 m `# A7 `+ S& a n7 V, ~The standard allows operation under different categories provided the isolation is suitable for6 p+ [+ [/ s7 d0 Z9 ?9 M
the voltages concerned. In this case, it is possible to mark both categories since the
' z0 ^0 @( s h" [; M2 {& mrequirements for Cat II at 600V are the same as those for Cat III at 300V.- _' m' `+ U8 W2 |0 t
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发表于 2012-9-19 15:11
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