|
|
, ~. f2 k1 Q# _( C' W7 C9 }
4 ?. @* N& _! s& Y( s
| Measuring Circuit Terminals (Amd 2), O3 F7 ~) @8 x. w# h) O. A; i
| 5.1.5; ]- N" K3 _0 `4 r, d) B8 X
| 61010-1(ed.1);am1;am2
+ C1 a- h+ Y0 E |
- I0 M- d! Z, S- j
6 Z6 V( f4 A' Q( b3 c* S1 Y3 _
Standard:
. O5 y1 b u& m; lIEC 61010-1:1990
+ |& q2 [, o4 i+A1:1992+A2:1995
, `" r' z" W& E9 ^1 {* N8 ^Sub clause:3 y1 ]4 T5 a5 P! f3 j
5.1.5
, t; ]1 ^) P3 TSheet n. 297! {& H$ C' G% b
Page 1(1)
, X; u9 \. \9 ~! ZSubject:
) }0 |, V( T+ o3 K9 e4 m; ], OMeasuring Circuit Terminals* F0 Z( G7 y. i
(Amd. 2)
4 K* {6 n! X; j fKey words:$ {& U. x7 X6 q# z3 e
Terminals
: i$ U4 ? _4 c( \8 F) {Marking, P5 Y3 n! i7 G! q2 Y+ C
Decision taken by ^* ?. @* w6 e- c8 b
ETF3 and confirmed
! z! I: [" g m) _$ Y. k2 F2 O8 _by CTL at its 38th
* W. P$ F' r$ C8 a" r Hmeeting, in Toronto; ~; Y0 ?, @, ~2 X& r
Question:. s0 M, T o5 `" t0 U7 S5 K1 w
Is it acceptable for a measuring equipment to have its sensing terminals marked:4 N" x. R7 c \4 ~' K5 ?$ z$ y2 F
“CAT II (600V); U3 g2 ~" J: D, z6 s5 T
CAT III (300V)”
5 j9 \1 Z9 a* `6 ]! H; D5 TDecision:) G1 f7 z, p# k* y- W
Marking with both categories with the relevant voltages as shown is acceptable.
0 A. T4 j' e$ W. [# G( MExplanation:
( H' ^0 z7 V$ S6 f4 ~) b' k/ MThe standard allows operation under different categories provided the isolation is suitable for
0 I2 w! C i+ r) m' p3 R2 kthe voltages concerned. In this case, it is possible to mark both categories since the
, w0 @* s- w l4 \requirements for Cat II at 600V are the same as those for Cat III at 300V.% i9 V+ ]6 ]' ?
6 n% ]4 m6 m' x) O' u
, O& T3 j& ~. c. ?* F$ I1 B* r4 @( h ^+ e1 N. S
|
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有帐号？注册安规
x
|
/2 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2012-9-19 15:11
收藏
分享
好帖
鸡蛋
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡