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|  DSH 446& S2 ~2 G6 a- t2 \. A/ X
9 R$ P% D5 A* b% |4 | | Protection of users8 H; O, O! y) g% C) q/ V8 g
| -$ n8 r( V# ^; ?4 y- ^; q
| 60950(ed.3)
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Standard:
" ?- H* i5 n( l9 Q4 bIEC 60950, 3rd ed.
+ ^6 x& ~* v5 h. p" S6 wSub clause:
7 s& N1 [# ]/ A! M4 ~7
M4 I Y: k2 H' B/ s& V7 D1 NSheet No., A6 V8 g; Y" ?! l2 V% N
446! U& g/ P2 D4 Q. G5 R. a* g3 C6 J
Subject:4 |' G5 ]8 F9 t6 d( S5 \( Y# d
Protection of users
$ e0 {9 w& B( Y- {. TKey words:
. K& P0 c4 p6 K! ?# dAntenna, voltage surge test
( u/ z6 G: O8 Z: s; b( C3 n: k) z& gDecision taken at the
0 J& Z% e) v/ p40th meeting 2003
% w+ z$ {# {& aQuestion:
: \, X& C" B% h% O/ Y ]! }- EFor protection of users and service persons from transients and voltage surges, what are the appropriate0 b" n/ H. Z r1 \( Q* Y
requirements between the following points for ITE connected to an external antenna:& E, ?. Q8 s2 m/ p& a
(a) antenna connection and Primary circuits?
, ]* e Z9 w9 d# t& J" G(b) antenna connection and SELV circuits when the antenna cabling is coax?
4 P# @2 g0 [4 _, v5 b- @(c) Antenna connection and SELV circuits when the antenna cabling is unshielded twisted pair
# f/ A9 p# {: C1 {; W% S( k3 \(UTP)?
, `* B! H; o tSee attached diagram. a4 V A k7 C9 r @ A- h
Decision:
1 [% [/ q) M ^$ a4 N: D1 v/ R* LSince Clause 7 is in IEC 60950-1, but is not in IEC 60950 3rd Ed, the requirements cannot be used for the 3rd4 {8 B: R9 Y2 S) ^+ n
edition.
, Q4 B& G; V& Y& Q/ q, x; r j, ZThis decision applies to IEC 60950-1 3rd edition.
- O2 V6 ]" ]7 e2 g( @In the case of IEC 60950 3rd edition sub clause 10.1 of IEC 60065 6th edition is to be applied, by referring to
6 ~, F1 ^/ D% j! LIEC Guide 112 2nd edition "Guide on the safety of multimedia equipment".& a" v, N! V0 r5 Z% _
Although, the test of 10.1 to IEC 60065 requires test between the terminal for the connection to antenna and
0 v3 _5 {+ u, W7 uMains supply Terminals, and not between the terminal for the connection to antenna and SELV.3 E# U9 F* i( r- X, u- O3 a
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发表于 2012-11-6 16:55
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