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发表于 2013-8-6 19:45
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来自: 中国湖北武汉
NTER 发表于 2013-8-5 16:48
个人不太认同,推进系统属于重要系统了,如果因为设置常闭,在使用过程中出现断线,而使推进系统shutdown ...
我之前写反了。在DNV规范pt.4ch.8sec.2中:"Emergency stop systems may be based on both normally open(NO) and normally closed(NC) circuits, depending on the arrangement and the function of the system to be stopped. Syetems, which can be stopped without any hazard should be based on NC circuits, emergency stop of systems having effect on propulsion motors and thruster should be based on NO circuits."
即,"应急停止系统可以为常开或常闭回路 ,取决于需要停止系统的布置和功能。停止时没有任何危险的系统应采用常闭回路 ,对推进电机和推进器有影响的应急停止系统采用常开回路。" |
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