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|  DSH 445! q5 o1 q$ g2 u" |9 a8 y
: t8 @% M6 v9 o/ P4 Y: Z. B1 y
| Protection of users- v/ _. J6 M; y# b9 ^8 H
| 76 r# K. V' b2 J! E; n5 [: {
| 60950-1(ed.1)
/ F5 N: P% G6 R |
; C& Y7 v. a( N+ I5 C0 Q+ G# G7 v, h
Standard:2 R) ]- L# T! L5 [" g
IEC 60950-1:2000, 1st ed,
' D& x1 q$ @! h- ]5 b7 OSub clause:! @6 H% D( i7 ` H, x7 J$ t2 n
7* I1 R# T4 U, T I
Sheet No.$ O5 z, h9 N* O" p
445. v4 w" c# f) Z: k/ w' d# S
Subject:
3 w* H3 B8 b' w( FProtection of users
& p3 q! m0 _% y' f. S% c) LKey words:
# V% [$ h% U/ i1 Q" a% CAntenna, voltage surge test
/ f" |* ?, u( _- E. DDecision taken at the
' F. z+ A- o& j40th meeting 2003
# p/ ^; b2 k" g* t/ A, h2 e' P: wQuestion:1 v/ U! F4 z, o: g1 t/ ?! O
For protection of users and service persons from transients and voltage surges, what are the appropriate( x, |/ E5 l; T7 }$ x
requirements between the following points for ITE connected to an external antenna:
& c b; s$ ^* M1 R6 |$ V(a) antenna connection and Primary circuits?
- w( a) t4 M7 q9 d" U1 C+ s$ T1 Q(b) antenna connection and SELV circuits when the antenna cabling is coax?
7 ^; F( ~' @2 K" _8 e(c) Antenna connection and SELV circuits when the antenna cabling is unshielded twisted pair
6 }: c* A5 }: e b5 q- e3 Q(UTP)?& y i. u, y5 N/ E8 @
See attached diagram.: o* Z' b0 U# s2 p2 Y/ I
Decision:
8 w, t3 z9 A3 N2 `+ U8 LSince Clause 7 is in IEC 60950-1, but is not in IEC 60950 3rd Ed, all references are to IEC 60950-1
( j' Q1 S0 z! MThe circuit connected to the antenna is classified in accordance with Sub-Clause 7.1 and subjected to the" w8 X1 k7 n3 V. w6 |' ~
appropriate requirements per 7.1. Additionally,
* V" Q3 o1 w% Z; U+ x, k(a) Sub-clause 7.3.1 is applied between the external antenna connection (terminal) and Primary+ e% ^1 D( I2 ~" C" b! C& P
circuits.
5 f3 d( a# C6 q0 q(b) Sub-clause 7.2 is applied between the external antenna connection (terminal) and the SELV
% C# s& U9 l' G0 n4 k7 Cconnector (RJ -45) when the antenna cabling is coax.
' x& g# f# x, w( I, N(c) Sub-clause 7.2 is applied between the external antenna connection (terminal) and the SELV9 o8 O: y, _' \3 ?. r8 V7 a
connector (RJ -45) when the antenna cabling is UTP.( t0 [ B- e1 P6 p
+ E5 o4 Q3 F# W+ m, B
4 k0 y( t4 W$ Q4 P$ `8 q* M |
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发表于 2012-11-6 16:57
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