Reduction of Pollution Degree 3 to Pollution Degree 2
Control of the Pollution Degree 3 environment to Pollution Degree 2 can be
accomplished by either:
– providing continuous energization of the enclosed equipment; or
– providing separate climate conditioning which prevents condensation
within the OUTDOOR EQUIPMENT or OUTDOOR ENCLOSURE; or
– the use of an ENCLOSURE meeting IP54. hdf590 发表于 2011-3-19 21:48 static/image/common/back.gif
Table 2 – Examples of the provision of pollution degree environments
Reduction of Pollution Degree ...
请问这个信息出自于哪份标准?谢谢! lele11 发表于 2017-5-22 10:17 static/image/common/back.gif
请问这个信息出自于哪份标准?谢谢!
UL60950 污染等级和IP等级没有必然关系。请查看60950-1中污染等级定义,2.10.10, 2.10.12章节。污染等级1通常是指封装元件。 ok_hmh 发表于 2011-2-16 17:57
附加防护 从外部环境污染等级2到: 从外部环境污染等级3到: 降低污染等级的 ...
你这个内容是什么标准里看到的,盼复!
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