|
|
0 ^% B/ Z- D5 j6 n% x
" ^- D: h& k2 n DSH 2978 X& _1 t5 F, {9 ^, x% m) v0 r& \
| Measuring Circuit Terminals (Amd 2)
" W1 w) t9 `: p* l: V" k3 B | 5.1.5+ J5 F; e0 T4 a" T1 h* [
| 61010-1(ed.1);am1;am2
& v8 m. x: _, f7 U) S: y) B# Z4 Y) a |
% m* Z$ n# w7 n7 D6 T
0 y/ V9 j C G9 l; ^& W$ C
Standard:
( h6 h& A, Y- F* ?6 @; XIEC 61010-1:1990
9 e% K+ A" n5 }; p* s+A1:1992+A2:1995
2 D6 N( P( f' c/ r8 O. iSub clause:
, B0 x7 s/ `, r5.1.5
$ T5 [6 x1 }5 [( g0 bSheet n. 297
% `2 d1 z- G/ o1 dPage 1(1)
! ]( N% C! ?0 S5 V. Y+ j" fSubject:
9 o% Q' S2 b+ i2 w+ z9 UMeasuring Circuit Terminals
. @- a/ Z' T/ ], e0 t8 [# C(Amd. 2)( p, t6 A6 g0 @2 N( W
Key words:" s2 X. ]! e* _9 X, {4 {2 F
Terminals* W6 Z8 z+ o, J. I
Marking( D1 R8 O. `# J5 ?4 u8 L3 r) N2 @
Decision taken by! s* y3 O7 _* W, U/ V
ETF3 and confirmed
1 ?; t) |3 `8 y' E0 N; }by CTL at its 38th5 h0 B* m/ B* [% a2 ?
meeting, in Toronto# h; D, W# M$ }7 \9 s$ B
Question:. p1 ?+ y& f0 N7 ^; r
Is it acceptable for a measuring equipment to have its sensing terminals marked:: `& }" t$ o- x8 Z' M5 c
“CAT II (600V)
6 K" y+ U: a- ]. a9 |! ^) zCAT III (300V)” E; S6 D# v! ~4 e$ P( t
Decision:; ^9 W' @! d, h& @! [5 Y
Marking with both categories with the relevant voltages as shown is acceptable.# M& e) K/ G1 _4 z; Q2 l8 J) ^5 X+ o
Explanation:/ l% n$ V- B0 t8 ^3 N6 ^
The standard allows operation under different categories provided the isolation is suitable for
5 K( P0 x2 p4 Dthe voltages concerned. In this case, it is possible to mark both categories since the
! S5 n; U0 j# }* j* @9 _requirements for Cat II at 600V are the same as those for Cat III at 300V.
9 K6 q" {) t6 r! I3 |# G) K6 H9 ]7 v$ f8 n2 s3 K
0 {- |) N& s( g3 |6 ^" E. A7 X
D+ q6 ~& Y6 H |
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有账号？注册安规
x
|
|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
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡
