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| DSH 446! Y" {" P" k; }" M! I
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| Protection of users
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| 60950(ed.3)' ]. i* h3 S" Q: n( W
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Standard:
$ G# `, h; B; d9 t' ^& aIEC 60950, 3rd ed.8 H2 F: E- j7 c6 o4 n5 z
Sub clause: Q" b; e. o9 i9 k1 b8 ]! F3 D
7
5 _; ] U. G/ g# ]" uSheet No.2 ]0 h2 ^4 G9 L+ t9 x2 J& T5 ?
446
, g6 s7 g! f1 f& r. QSubject:% o2 O1 @. O7 P* ?1 P- T( q& Y" j: m
Protection of users4 A, T- _1 T ^$ `. L- \
Key words:% o A' `1 C. n5 C
Antenna, voltage surge test
0 ^0 i) V5 s0 \Decision taken at the( X6 k( [6 \) B' R6 n+ ^
40th meeting 2003
8 {6 o/ Z1 \* |6 U) o0 p! wQuestion:" R, Y z) P. N J9 i- J3 T
For protection of users and service persons from transients and voltage surges, what are the appropriate. @1 y& m6 W+ d) |7 b, ~
requirements between the following points for ITE connected to an external antenna:
- N0 j0 l5 f5 M6 e(a) antenna connection and Primary circuits?- t' u4 [) h" O$ }8 V! s$ \
(b) antenna connection and SELV circuits when the antenna cabling is coax?5 ^- |0 W" b3 n' a' ?
(c) Antenna connection and SELV circuits when the antenna cabling is unshielded twisted pair
) Q4 W, |$ y, b8 G& }(UTP)?8 E* m: D" U) v5 A8 K( ?
See attached diagram.
, R6 `$ N- |8 r5 ~. gDecision:
5 X4 Z1 w0 K- x0 K# v7 PSince Clause 7 is in IEC 60950-1, but is not in IEC 60950 3rd Ed, the requirements cannot be used for the 3rd
! V* W4 O& h" j+ P) k& e/ Hedition./ Q1 x' k$ `& B4 s1 o# ^
This decision applies to IEC 60950-1 3rd edition.5 W* K6 p5 z: {+ ~, P1 Q8 ~: [5 r
In the case of IEC 60950 3rd edition sub clause 10.1 of IEC 60065 6th edition is to be applied, by referring to- T6 L+ Z6 X* Z% O6 T7 [; S- }
IEC Guide 112 2nd edition "Guide on the safety of multimedia equipment"./ @# @- f3 y$ e4 X0 z& o$ i% i6 g
Although, the test of 10.1 to IEC 60065 requires test between the terminal for the connection to antenna and2 e: h5 m r j' U4 x6 o4 g! U4 H
Mains supply Terminals, and not between the terminal for the connection to antenna and SELV.
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