|
|
# m' v+ ^ `1 i
- T3 T3 Q7 I$ }6 \$ b7 `
| Components2 [5 O4 n Z& Q- z, o7 C5 }1 |
| 14
4 R4 J( W: f- d | 61010-1(ed.1);am1;am2
+ ]6 N+ N: C- l6 H |
+ G5 b; a+ a* F$ q3 @" M0 s
6 @7 S& s, W( j2 O' g4 L" w0 @
Standard:4 e" M& ], A; W. R8 o( g( l: J
IEC 61010-
5 ^# N+ O: E/ W0 q; v$ P1:1990+A1:1992+A2:1995! Y) c* B; ^* _* r
Sub clause:0 [ B! J3 l+ ~" V; S
14
- b+ g/ j5 g( J" [7 T8 LSheet n. 311
3 G" h, p& L" A/ T( p- \Page 1(1)
$ R( l: ^5 y' o% h7 a6 N3 i% aSubject:
+ E) c5 `. x% h9 Q9 `Components* h9 i: Q9 x3 d7 O3 [
Key words:3 u+ P( L6 w! @9 f/ k3 c
- Installation
( n# ]! x8 l* T5 I- Category
: o. V8 q: y% ODecision taken by8 H# U6 T' N- |, n: @* \1 _
ETF3 and confirmed, r, m( e1 b- r) B9 Q8 ]- p2 d! d
by CTL at its 38th& ]) L, H! w6 [, B2 o, P
meeting, in Toronto3 J2 X! ?0 \( Q1 U& ?; I. Q8 _
Question:( T$ ^; s/ \- i5 Y
Where equipment is fitted with surge protection devices, is it acceptable for the circuits9 V! a+ A8 O3 I, _0 z7 k% Z
following the device to be a lower category than those preceding it?
4 u. ]2 r8 u" }Decision:# r8 H: @- R/ L" Q
It is acceptable, for example, for a Category III equipment to have circuits at Category II
! |0 J$ ?9 r1 q9 hfollowing such a device.
# V0 c3 ~$ K W% gExplanation:; [1 C% `" c5 @
The action of these devices is to remove excessive voltage spikes from the circuit and
0 J U! i1 B) U' h# Q' Jtherefore, the Category of the circuit may be reduced accordingly. IEC 664 does have more0 E! v+ P" w( x
tests to allow this. 5 sec. “spike” will destroy surge protection+ w2 G' V7 M+ Z, q$ q( w
( v$ v: O: p2 b* u
6 R! g' q( O! G; _" B
) p" W% ?7 u& ]$ g |
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 14:45
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