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Standard: IEC 60950 Ed. 2 Clause: 4.3.17 Sheet n. 2901 |. j( n' K, c$ {
Page 1(1)
+ S |" i8 W! W4 o; SSubject: Miss-mating of connectors Key words:
# e- M! X9 U7 ?0 n- Modular
! f& S# y4 D+ i. n4 M& nconnector2 i' S7 z) m( ?0 u- V# t' T, l
- Miss-mating/ B$ w6 p, Z) Y Q) v% ~! w
Decision n. 23/362 q, U( y$ W7 x
taken at 36th
, U2 O) y' H" Z8 R. [! S/ omeeting/1999 q2 \" @3 x) h3 N- ~% w; j
Question:! w \3 L3 P- ~$ P7 y* C* C1 l& Y
It is very common to use modular connectors (e.g. RJ-11, RJ-12, RJ-45), accessible to the5 U K% C/ L" E9 k0 c0 P& v
users, for a variety of transmission functions, both telecommunication and data.+ u5 v+ @; w& G/ e
Unfortunately, RJ-11 modular connectors easily mate with other configurations of modular7 ~( X3 J6 @% W( x8 O- M3 a# N) X
connectors: RJ-12, RJ-45. This sub-clause permits marking only for connectors accessible
% ^& F8 i* ?* `; w \to Service Personnel and, on the other hand, relying on configuration as a means of
+ p2 u2 ~% H4 j1 X+ G% [- Kpreventing miss-mating is unrealistic.) `# S) z5 S( p& }; ]3 A
How shall these connectors be tested?.
+ i* E6 a5 m a7 h; `6 TDecision:
' |4 o* n! G1 O( bIf there is a possibility of miss-mating of modular connectors (e.g. RJ-11, RJ-12 etc.) r% K5 A* m5 K# S- Q4 w
accessible for the user, tests have to be made to verify that the SELV limits remain.
7 B/ a }- R; ?/ [ ~1 ?' b: @( k/ bIf the voltage of the TNV-circuit is known this value is used, otherwise the test generator of( H2 j7 v" C; L$ n/ ?6 H1 j
6.2.1.3 (Figure 15A) is used for testing. (See also OSM-EE Decision 98/6)" }6 |. X" m, ]5 q+ I9 b# x
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发表于 2012-11-6 17:54
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