DSH 446 Protection of users

小米

广东安规检测
有限公司提供：

小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 446 5 ]8 e3 ]+ w. i& N2 [' J/ w 6 j# y8 g6 x% }3 V* b

Protection of users

- ! T" x6 X8 B& y; F

60950(ed.3)

Standard:
2 O, N" j# y2 T8 \IEC 60950, 3rd ed.
Sub clause:
1 R7 Z3 O. Y0 u. ~! d, w7
Sheet No.
$ N- ^( o0 L" x6 s: b7 d446
Subject:
( ]# L7 v" ?3 [6 J% A9 \Protection of users
# i0 F8 P$ e8 C" g2 e. zKey words:
Antenna, voltage surge test
Decision taken at the
40th meeting 2003
$ Y& K$ a, N# {Question:
8 ^5 f4 l) J1 H; UFor protection of users and service persons from transients and voltage surges, what are the appropriate
requirements between the following points for ITE connected to an external antenna:
0 E2 I/ m+ V7 [3 w- X1 _, X" `: c3 i(a) antenna connection and Primary circuits?
(b) antenna connection and SELV circuits when the antenna cabling is coax?
(c) Antenna connection and SELV circuits when the antenna cabling is unshielded twisted pair
5 y+ m5 w: E8 |(UTP)?
, I& j, n% t# U% t' n9 m6 }See attached diagram.
8 {" [7 b1 |! JDecision:
Since Clause 7 is in IEC 60950-1, but is not in IEC 60950 3rd Ed, the requirements cannot be used for the 3rd
edition.
This decision applies to IEC 60950-1 3rd edition.
1 Q4 [$ ~7 J! F( h7 {In the case of IEC 60950 3rd edition sub clause 10.1 of IEC 60065 6th edition is to be applied, by referring to
3 c. n" J9 n# U/ e; P7 iIEC Guide 112 2nd edition "Guide on the safety of multimedia equipment".
Although, the test of 10.1 to IEC 60065 requires test between the terminal for the connection to antenna and
Mains supply Terminals, and not between the terminal for the connection to antenna and SELV.

0 @  n2 B: B+ G
1 Q; {/ _5 U  f+ d/ n: L0 D