|
|
|  DSH 445
( w+ }( s8 a& ]# I3 R$ ~7 F& B, V7 I; q0 D
| Protection of users
6 v" }* N9 B [2 Z1 U( P8 F | 7
' Q5 j8 N, z! U8 k; r | 60950-1(ed.1)
( B2 p; U- a- l: g) I$ ~- B' I |
0 W* _8 c; s: X# Y* m* cStandard:
: i( O7 F! g8 l8 p% X7 o4 QIEC 60950-1:2000, 1st ed,: I; R# N9 ^$ Q- c6 O4 G; V! b
Sub clause: @/ W8 `; F0 \- O2 l8 s
7
7 Y3 l$ W9 j1 r4 B! M& SSheet No.+ q. {9 Y3 g5 a# ?6 C6 }
445
: _3 T3 J9 B* ]0 \Subject:, C+ _' I+ W6 W V3 C& M
Protection of users% ?/ t$ j+ C% S% Z, E0 B. _
Key words:
* j4 t, h/ H9 s, C+ e& B6 {Antenna, voltage surge test6 J2 R( j/ k0 W& R
Decision taken at the
& S4 p* J7 _7 V' J40th meeting 2003
6 n; [# V8 H# y& m( }$ k. v% f# ?Question:
$ W0 j8 ?. x$ W& XFor protection of users and service persons from transients and voltage surges, what are the appropriate
- j$ g! L! \& H v' yrequirements between the following points for ITE connected to an external antenna:
, v1 I+ G8 Z+ T(a) antenna connection and Primary circuits?5 S3 ]3 o& Z: @9 |' ?
(b) antenna connection and SELV circuits when the antenna cabling is coax?9 c( `; N9 H2 u+ q. Y
(c) Antenna connection and SELV circuits when the antenna cabling is unshielded twisted pair) t- M k4 A8 W G- o) A" w8 g! q, q" V6 ^3 l
(UTP)?! e Q) ^! N( F9 E" K3 L" Z E
See attached diagram.
' l# k" t% o \( NDecision:
9 H: b( Q$ t( m: b8 A: {Since Clause 7 is in IEC 60950-1, but is not in IEC 60950 3rd Ed, all references are to IEC 60950-1
- l) q( j" E; n% D! w: w) `The circuit connected to the antenna is classified in accordance with Sub-Clause 7.1 and subjected to the
# k$ M$ E$ s7 u0 c& Vappropriate requirements per 7.1. Additionally,8 {$ O+ j" @6 c/ g# `. X: j( x5 y
(a) Sub-clause 7.3.1 is applied between the external antenna connection (terminal) and Primary
4 X$ g$ F2 D1 O( [# lcircuits.3 R) R7 D8 l! \
(b) Sub-clause 7.2 is applied between the external antenna connection (terminal) and the SELV# y' s$ ^; h9 C0 d& l, }
connector (RJ -45) when the antenna cabling is coax.
/ c- l; c9 e1 I5 @ }(c) Sub-clause 7.2 is applied between the external antenna connection (terminal) and the SELV$ l( m+ Y& j$ |4 c! c e
connector (RJ -45) when the antenna cabling is UTP.. H: L- a a% V! K
+ Y- A; Y1 c0 V8 u
) h' I y/ H! _4 M9 { |
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 2012-11-6 16:57
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡