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|  DSH 445
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| Protection of users
5 F" J$ u; A. h' C0 J | 7) N. P4 `4 `1 z7 i. d
| 60950-1(ed.1)- l9 @/ k) v2 O% k; k, C3 V
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% Y! p* \( N% C0 f" S5 KStandard:& W1 b- f. F% x1 S/ L
IEC 60950-1:2000, 1st ed,+ u% p, Y* K- s& e" {
Sub clause:* i! L/ N Z1 g! `9 n6 w
7
/ Q p6 @* V& Q* PSheet No.$ P6 V! h4 c! W8 {2 X9 a
445: D/ M0 H- Q C, q G' a1 z- g; ?
Subject:
0 m9 ~% @) N1 L) JProtection of users0 N9 n( F g0 b6 p0 S: H/ W
Key words:
6 M$ H8 b$ L" F+ i" P% gAntenna, voltage surge test. b; v( z T6 c& n4 h$ ~
Decision taken at the+ \! G9 B( a/ {1 k4 o( I5 C2 H/ O
40th meeting 2003
+ A0 K4 f& F/ A2 z5 c8 tQuestion:
7 K& k/ l5 l4 s7 UFor protection of users and service persons from transients and voltage surges, what are the appropriate
D/ D/ P' `2 c# Srequirements between the following points for ITE connected to an external antenna:
" T* O# _: p" m0 C1 C. i9 A(a) antenna connection and Primary circuits?
2 o# Z7 g( N* X- T5 ^(b) antenna connection and SELV circuits when the antenna cabling is coax?( F2 _; R0 G4 z! L4 \: {
(c) Antenna connection and SELV circuits when the antenna cabling is unshielded twisted pair
; u" @4 x9 f% z+ |) v0 d' {- Q(UTP)?3 i& d, A) F( r! m& a }! _
See attached diagram.* P& U) L3 X# v
Decision:7 v4 q- u1 `* u1 ~, n
Since Clause 7 is in IEC 60950-1, but is not in IEC 60950 3rd Ed, all references are to IEC 60950-1
* V1 b8 K( }% h. z& K$ ?The circuit connected to the antenna is classified in accordance with Sub-Clause 7.1 and subjected to the9 ?* |2 U- J/ d6 B
appropriate requirements per 7.1. Additionally,! i" x2 q( Z$ ~/ B! o) W
(a) Sub-clause 7.3.1 is applied between the external antenna connection (terminal) and Primary/ a6 C- u4 e* c7 ]" g
circuits.
: L1 H4 }- c! C! C- w/ `) Y(b) Sub-clause 7.2 is applied between the external antenna connection (terminal) and the SELV
5 V( p7 e7 E5 l8 i0 b" |" Gconnector (RJ -45) when the antenna cabling is coax./ P* X6 {7 M) r2 `. M7 l6 e
(c) Sub-clause 7.2 is applied between the external antenna connection (terminal) and the SELV
/ Q2 M) f7 Y/ V; K9 W+ b5 z1 `7 zconnector (RJ -45) when the antenna cabling is UTP.
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