raymod 发表于 2008-12-2 16:50

應該是要接地,參考UL1778標準敘述:

18.17 If two or more units are interconnected electrically and one of them is grounded, they shall be bonded together, such as by means of a conductor included in an interconnecting cable or by a conductive mechanical means, including the use of starwashers or the equivalent (see 19.7 – 19.11).

如果你的兩個以上的unit 是連接在一起使用的,而一個unit視有接地,那其他unit也需要接地,並且,是與提供PE的那個unit bonding在一起.
页: 1 [2]
查看完整版本: 请问UPS的电池箱需要接地吗?如何接地.