DSH 290 Miss-mating of connectors

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DSH 290   Y( w- `8 E  |9 N9 I! x9 m6 ^& Y6 C

Miss-mating of connectors 8 ~+ N4 T* r5 {4 S

4.3.17 # b4 u, e- \9 |9 `* e

60950(ed.2)

Standard: IEC 60950 Ed. 2 Clause: 4.3.17 Sheet n. 290
Page 1(1)
Subject: Miss-mating of connectors Key words:
- Modular
0 b- R6 ?: P* G: A3 hconnector
- Miss-mating
Decision n. 23/36
taken at 36th
& I/ o% ~& P7 _meeting/1999
3 g3 C' V& r: e2 _7 Q5 fQuestion:
It is very common to use modular connectors (e.g. RJ-11, RJ-12, RJ-45), accessible to the
users, for a variety of transmission functions, both telecommunication and data.
Unfortunately, RJ-11 modular connectors easily mate with other configurations of modular
connectors: RJ-12, RJ-45. This sub-clause permits marking only for connectors accessible
1 I) G( f, u. _1 q1 U( _  ~7 |to Service Personnel and, on the other hand, relying on configuration as a means of
; y. M2 u0 U% z* n: e. {6 Gpreventing miss-mating is unrealistic.
How shall these connectors be tested?.
Decision:
If there is a possibility of miss-mating of modular connectors (e.g. RJ-11, RJ-12 etc.)
* L1 A: j" n, q) waccessible for the user, tests have to be made to verify that the SELV limits remain.
If the voltage of the TNV-circuit is known this value is used, otherwise the test generator of
6.2.1.3 (Figure 15A) is used for testing. (See also OSM-EE Decision 98/6)


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