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| DSH 445* h& f# M) A5 k' A
* P4 q8 ?- b X | Protection of users
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5 i: I; k8 l! k2 g1 r$ Y; \9 { | 60950-1(ed.1)
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Standard:
# a9 c; L) {! UIEC 60950-1:2000, 1st ed,
& t3 c- |; B. f" A. F0 _' I7 BSub clause:. G" f2 b1 w# b" s) E: {
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Sheet No.& P0 j8 n& B3 C e0 V- q7 a
445# o$ s5 U1 h3 b" r
Subject:! m5 W( s4 v: `0 z
Protection of users5 L4 u, P. ]3 B
Key words:2 H$ r+ G4 v4 @; J u
Antenna, voltage surge test. C2 j& f4 S$ j/ I
Decision taken at the
) y7 W5 M0 D) I/ Z3 D, a1 N% b40th meeting 2003
H3 G8 `4 z( l$ g$ p SQuestion:& E! H$ s/ g$ e% H" y
For protection of users and service persons from transients and voltage surges, what are the appropriate; \" ?2 _' L" p n6 y& N
requirements between the following points for ITE connected to an external antenna:
# J0 z& v' |: _/ k+ \, p$ \! X(a) antenna connection and Primary circuits?% q! t3 p, n( ^; m" X! F
(b) antenna connection and SELV circuits when the antenna cabling is coax?& m7 N6 @4 y" t
(c) Antenna connection and SELV circuits when the antenna cabling is unshielded twisted pair
. |( C$ D5 f6 x% ]8 ?& W(UTP)?
. k' j; d$ u+ Y5 u: eSee attached diagram.6 {* A: C7 E3 |( f* y* E
Decision:# |1 v: H7 F- r4 s- ]% S% O
Since Clause 7 is in IEC 60950-1, but is not in IEC 60950 3rd Ed, all references are to IEC 60950-1
( \1 a5 r8 o* ]' D8 }+ L/ Z6 _& hThe circuit connected to the antenna is classified in accordance with Sub-Clause 7.1 and subjected to the
# O. v3 o$ x5 R0 O, p' x8 rappropriate requirements per 7.1. Additionally,
" q4 T' N. C$ i(a) Sub-clause 7.3.1 is applied between the external antenna connection (terminal) and Primary9 K- F( H" n( X3 h1 ~" Y' M8 k3 E
circuits.
3 m; E, T& B# u8 c$ `8 h" Q(b) Sub-clause 7.2 is applied between the external antenna connection (terminal) and the SELV
3 t* y1 X. {" e. nconnector (RJ -45) when the antenna cabling is coax./ {2 \. D% d6 \/ G8 l0 m# R
(c) Sub-clause 7.2 is applied between the external antenna connection (terminal) and the SELV0 z+ t& e8 f6 _
connector (RJ -45) when the antenna cabling is UTP.
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