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|  DSH 445
+ l* t9 Y3 `6 Y; l T
( d& Z9 i& Z4 F | Protection of users9 q2 Q. b3 H' ~& Z; T3 ]
| 7
: L: B) f5 I9 _1 t5 s | 60950-1(ed.1)
1 g& n, a- `3 J; T/ Q |
1 Z9 B/ l2 m4 I; Y2 uStandard:
- W b$ x) n- e3 J! cIEC 60950-1:2000, 1st ed,
/ v2 i3 {. I& sSub clause:
~8 z/ O3 S) x$ `% S7
) y/ A& Q# G( \& \3 iSheet No.2 w, `' _' D' Z- |8 z
445
( q# d5 G) s2 T$ t' l$ s& P0 E7 i& eSubject:; `( ?% ^) {5 D
Protection of users
. U1 V d$ U1 U# |0 g1 oKey words:+ o) O. q2 S0 k4 W g
Antenna, voltage surge test
q" b6 s, i2 R& V, q& C: jDecision taken at the/ `8 O2 _2 p$ @, c8 A5 v
40th meeting 20039 K. z3 ?5 U" L1 G9 {/ v
Question:- ?! x$ i9 O" S! M+ Q% |& [$ \) I, o
For protection of users and service persons from transients and voltage surges, what are the appropriate
- f' t" F" H5 D9 U, g5 B) wrequirements between the following points for ITE connected to an external antenna:
8 G, x% a, ^* |' K8 p& g& J1 Y(a) antenna connection and Primary circuits?
. S$ x# K0 z& l(b) antenna connection and SELV circuits when the antenna cabling is coax?9 O& u/ v' r9 {" P+ |' w
(c) Antenna connection and SELV circuits when the antenna cabling is unshielded twisted pair
% {! A2 N7 j1 `' `6 X(UTP)?
1 m/ s8 w3 L, J4 C4 V# iSee attached diagram.
N& k l8 G7 R: j! s$ PDecision:
2 ^% u$ C5 Y( MSince Clause 7 is in IEC 60950-1, but is not in IEC 60950 3rd Ed, all references are to IEC 60950-10 S" \9 C) d. c4 e
The circuit connected to the antenna is classified in accordance with Sub-Clause 7.1 and subjected to the* S7 q4 i2 d b; W
appropriate requirements per 7.1. Additionally,& e0 X5 C% J0 k" c0 y# X6 E
(a) Sub-clause 7.3.1 is applied between the external antenna connection (terminal) and Primary7 z' |: A: A+ `7 h. n* r& o3 y
circuits.0 c1 A& {& \" w( q5 b* P
(b) Sub-clause 7.2 is applied between the external antenna connection (terminal) and the SELV" v" {# W0 j- F! r. n
connector (RJ -45) when the antenna cabling is coax., {" J( g& R0 P! l# K
(c) Sub-clause 7.2 is applied between the external antenna connection (terminal) and the SELV* S% a5 B# |7 ^7 U+ V: P P
connector (RJ -45) when the antenna cabling is UTP.' X) I' |% R( ]# \# ?6 z
0 `" l) S5 _9 ?3 Q2 x
7 L% U; B5 M6 p0 }: ~1 y |
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发表于 2012-11-6 16:57
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