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|  DSH 4465 S$ _5 r2 O+ [ U+ q
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| Protection of users% S: k% t0 v: h1 Z3 W
| -9 ~8 }/ w5 @$ G1 U
| 60950(ed.3)
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Standard:" {7 [2 K: L* Q( ^- M9 U
IEC 60950, 3rd ed., A3 d4 ]* U$ ?
Sub clause:) H; o5 E' @! _0 L8 }2 i6 o
76 G% ]! l' `1 O5 Z0 B
Sheet No.
4 Q$ u% {1 ^2 D' `& C( c$ \: i446- V3 _4 A2 t) F" L+ C" f/ |7 ]
Subject:% C# m/ R* B G8 j
Protection of users ^" f# n! V; g* y- w! C
Key words:$ @0 Q3 X) H ]- q
Antenna, voltage surge test0 B. Y; p0 ?6 D" h9 e
Decision taken at the3 w. ?/ t5 @; S" p
40th meeting 20033 w! |# w% t& p% b7 R( ~
Question:! W# ~2 W( v/ S) L: o
For protection of users and service persons from transients and voltage surges, what are the appropriate+ `" O# @2 T6 c$ V! k2 n: z6 w
requirements between the following points for ITE connected to an external antenna:
( B' x0 I$ `6 ^6 U3 e$ A(a) antenna connection and Primary circuits?
. [% v4 c5 d* l1 y9 G2 I7 S(b) antenna connection and SELV circuits when the antenna cabling is coax?( B! k) G3 k3 j( f9 `5 W
(c) Antenna connection and SELV circuits when the antenna cabling is unshielded twisted pair
3 y0 n( q% E% _(UTP)?
5 s. J" X9 v/ h% l) h; U* SSee attached diagram.
$ G5 d$ g8 A9 t( Y" t+ L2 yDecision:7 }# @5 {; B' b$ o0 j
Since Clause 7 is in IEC 60950-1, but is not in IEC 60950 3rd Ed, the requirements cannot be used for the 3rd4 E8 ^4 q7 _ y" o/ O5 w! t8 }
edition.9 [4 J% {% S3 t* g4 [
This decision applies to IEC 60950-1 3rd edition.2 N. `% O! Z9 n# h! M* {+ F
In the case of IEC 60950 3rd edition sub clause 10.1 of IEC 60065 6th edition is to be applied, by referring to
5 N3 A. f! V7 C) H2 V& B; i3 y3 cIEC Guide 112 2nd edition "Guide on the safety of multimedia equipment".5 M- }8 k# A/ Y5 o+ H
Although, the test of 10.1 to IEC 60065 requires test between the terminal for the connection to antenna and- N% @7 r1 \' O: d7 p, M
Mains supply Terminals, and not between the terminal for the connection to antenna and SELV.
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发表于 2012-11-6 16:55
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