|
|
" d1 x+ z3 s5 @+ ~# w g! K
$ f" x) C1 K1 v& ^
| Components5 D0 N( ^7 t; A$ t
| 14* i I. X( C: b- ?' {7 r5 q% O3 T
| 61010-1(ed.1);am1;am2
& J) Z: U; Y8 c( O8 J |
2 q1 v2 \3 Q8 i. i' g r+ ?- v) [4 j1 M# ~2 ]
Standard:, M1 v; H9 F) t
IEC 61010-
( T, G8 @# Q; h Z( c Z9 C) u1:1990+A1:1992+A2:1995
/ p9 z0 u8 @9 K# g! e( N/ gSub clause:! Z) G* W* Q1 s& d% [0 o/ {3 v
14! g' d; O' Q- I# f' c0 I
Sheet n. 311
' r' Q5 ~, G% F1 o- x6 k) ]Page 1(1)
. r+ s/ _$ j9 \2 R+ rSubject:
$ b9 P3 ~, h6 K" S; z _3 {Components5 F( `# Q, E% f2 x* }; m
Key words:$ U! g0 {+ Q( `; L; V
- Installation
; Y! ^, M3 I( @6 @4 N. P6 B- Category( L {3 {; U! d
Decision taken by3 ^# z/ x1 f9 A3 N1 ?( Y
ETF3 and confirmed$ a7 E0 d! n: _! K$ z# d
by CTL at its 38th. h* U; t9 m: m& ~( S
meeting, in Toronto
1 C% v/ H0 T: O" A' QQuestion:
g- d- |/ q! h+ g1 u6 f yWhere equipment is fitted with surge protection devices, is it acceptable for the circuits
# M- |7 w' c0 w3 c# [% ffollowing the device to be a lower category than those preceding it?2 r6 y( L! D- k+ n
Decision:0 D x: _. p2 s3 a8 A
It is acceptable, for example, for a Category III equipment to have circuits at Category II
9 Y R/ v/ U! Y( }, v5 J- j6 g: ?following such a device.
( }7 K- Y$ g" f) s0 }Explanation:' ?/ ^$ X- X' e& [
The action of these devices is to remove excessive voltage spikes from the circuit and
8 E) g4 X+ R- ~1 ^! v! h$ M# Rtherefore, the Category of the circuit may be reduced accordingly. IEC 664 does have more }: U0 l/ q& i1 e/ @* h
tests to allow this. 5 sec. “spike” will destroy surge protection
' g, a6 ~! _: F) y2 k# C8 F# g- X1 x V" _# S: y
2 D) X8 @2 g0 w. q# w; x! n2 H/ b. j, t
|
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
|
/1 
|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
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡