DSH 290（IEC 60950-1）RJ模塊化連接器的混用

Subject: Miss-mating of connectors

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.

問題：

不管是遠(yuǎn)程通信還是數(shù)據(jù)傳輸，一些具備傳輸功能的模塊化連接器是很常見的，如RJ-11、RJ-12、RJ-45等用戶可觸及的連接器。

然而，RJ-11連接器很容易與其他連接器（如RJ-12、RJ-45等）混用。標(biāo)準(zhǔn)條款中只考慮了維護(hù)人員可觸及的提示標(biāo)記，另外依靠配置來保證不混用是不現(xiàn)實(shí)的。

該怎么測試這些連接器呢？

決定：

如果用戶可觸及的連接器存在混用可能，必須進(jìn)行測試以保證具備SELV限制。如果TNV電路電壓是已知的，則使用該電壓。否則按6.2.1.3條（圖15A）進(jìn)行測試。

提示：決議中6.2.1.3（圖15A）見最新標(biāo)準(zhǔn)2.3.5條

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