DSH 290 Miss-mating of connectors

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DSH 290 / B* Z0 T; Z$ \- p# s' W

Miss-mating of connectors

4.3.17

60950(ed.2)   d, T- r1 N! ?7 `; N4 t

' \/ z3 F5 h5 [2 J! e1 \, Y/ i9 IStandard: IEC 60950 Ed. 2 Clause: 4.3.17 Sheet n. 290
Page 1(1)
Subject: Miss-mating of connectors Key words:
1 t2 V& o, J( m8 O% d$ j5 x' E9 F6 }5 W- Modular
' k' X; l6 z+ _, kconnector
- Miss-mating
Decision n. 23/36
taken at 36th
meeting/1999
Question:
It is very common to use modular connectors (e.g. RJ-11, RJ-12, RJ-45), accessible to the
8 _0 J6 m4 h3 ?4 J5 busers, 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 w( m+ i) X3 l* x  Rto Service Personnel and, on the other hand, relying on configuration as a means of
- a  m( m* a; o1 n  i( V, Bpreventing miss-mating is unrealistic.
6 \% ]! Q: c( Y9 o- C! \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.)
accessible 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)
1 l4 c# F' ~9 u$ ?8 ^: R) v. z, Z: W! a, K
0 A* S" R' X+ ~  T$ B
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