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! P7 K" z* o; B7 o& ^ | Measuring Circuit Terminals (Amd 2) w9 r$ d. R0 p$ H2 i2 f" L/ S' k
| 5.1.5
, ?( _# g0 z9 X* @# E3 @ | 61010-1(ed.1);am1;am2
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# |8 m* g/ _) p" [Standard:6 y o' u3 M, q
IEC 61010-1:1990
+ @! W- e3 F9 g+ S+A1:1992+A2:1995' y; V3 ]2 I$ |( A9 S1 ~7 [
Sub clause:
% Z5 v; v, ?& x& b5.1.5" s; s ~+ l- k8 c3 O) i: `& q
Sheet n. 297( n+ a. L1 ~) {
Page 1(1)
4 r/ D# X# X; i( rSubject:
6 C! n# _; _0 a& L1 zMeasuring Circuit Terminals
) Y+ N9 P( {$ ~: Q8 K(Amd. 2) ^5 j2 d# K, U1 R
Key words:/ D" E4 e4 t! Y% i2 ^
Terminals
- U& k6 {( C0 u3 a5 ?3 O. {Marking
! s$ I8 K- V- Q3 NDecision taken by
7 n/ N/ T2 l1 c" O. N y- qETF3 and confirmed& R& e' p8 U) T l! |' A
by CTL at its 38th
0 X: L; ^! G' ?7 s: g# A; w, l( Kmeeting, in Toronto2 W* z: j* A: y
Question:
: C( i) X) A1 Q7 \Is it acceptable for a measuring equipment to have its sensing terminals marked:
8 E( i5 N- w) F, A7 h/ X4 m: s. m“CAT II (600V)0 c6 W5 Z4 L0 j) b6 b3 s- a
CAT III (300V)”
& @! I( x# r# x! J9 w- `6 rDecision:
" A9 |9 v% O. R& A b& E! Y) ZMarking with both categories with the relevant voltages as shown is acceptable.
8 A+ i& `- L& s* o6 bExplanation:
& A( ~# h) N! ^, I; I' P; |The standard allows operation under different categories provided the isolation is suitable for$ K8 d2 ~/ ?/ R) o e
the voltages concerned. In this case, it is possible to mark both categories since the+ q. c( q( [( w' @5 [% K
requirements for Cat II at 600V are the same as those for Cat III at 300V.# N1 M6 d: J& f9 {8 q7 T- {
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发表于 2012-9-19 15:11
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