DSH 290 Miss-mating of connectors
http://decisions.iecee.org/icons/ecblank.gif DSH 290
Miss-mating of connectors
4.3.17
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
connector
- 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
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
to Service Personnel and, on the other hand, relying on configuration as a means of
preventing 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.)
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)
页:
[1]
