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+ {# `+ {, d# \. f6 w' W8 B$ ]6 R7 R& J
| Measuring Circuit Terminals (Amd 2)
% Q/ `5 x5 y) j9 W, D) ? | 5.1.5
7 x5 I! z; u1 i8 X* @/ f* T | 61010-1(ed.1);am1;am2, W; |% f! \# l
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1 S7 n5 F0 E+ `
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Standard:
; q! u+ H$ c2 k0 c) q+ xIEC 61010-1:1990
: g! J% p7 ~$ ~1 a+A1:1992+A2:1995& I2 ?1 s _; a8 D1 W) F* O
Sub clause:: n k9 ]/ ]5 U$ y0 F$ y0 U
5.1.5
" Y5 W" h" ~; ?! W5 t4 q& p3 RSheet n. 297+ d$ F, Z* k' K+ ?7 R0 a
Page 1(1)
& D& r2 i2 }- USubject:0 s9 h$ E1 d4 W! Y8 Q* |
Measuring Circuit Terminals l0 a0 m/ y7 F) c) o) h# i0 `
(Amd. 2); ?! Z7 C, d) x+ B) q
Key words:3 F( z$ R, |; V! }# j, _* _; M6 }
Terminals7 H4 l+ K2 s( q2 x8 s
Marking
" N V# W( X" V+ ^) zDecision taken by: K4 W. ^* l6 J( M/ `) T
ETF3 and confirmed
, R! |5 P/ j- x) Vby CTL at its 38th
3 c- \; h5 R) o( B1 f% \: ?meeting, in Toronto" L3 I, U6 V3 f5 d4 M
Question:
. E' p9 a1 c2 V5 V8 aIs it acceptable for a measuring equipment to have its sensing terminals marked:
8 D3 s% B% B6 b$ j% Q4 U“CAT II (600V)
& s8 n7 h0 F/ l# ^: x. GCAT III (300V)”
2 I G" j2 `- A/ m8 ADecision:
. \" ]1 O# c" x h- X8 @' E6 jMarking with both categories with the relevant voltages as shown is acceptable.
0 H0 J3 a! r/ A% \3 g% v# S0 z" TExplanation:
' i) l# l8 h' M/ F% e9 p' M4 q% VThe standard allows operation under different categories provided the isolation is suitable for- L. Q) A! m+ G& S) J1 U
the voltages concerned. In this case, it is possible to mark both categories since the; Z/ M3 a V& h3 \8 r1 `
requirements for Cat II at 600V are the same as those for Cat III at 300V.
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x- t, u+ t% Y- w) ^, E2 e
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发表于 2012-9-19 15:11
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