
Transfer Switch Equipment
出版:Underwriters Laboratories

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基本信息
标准编号: UL 1008 Ed. 5 (1996)
标准类别:Standard
出版单位:Underwriters Laboratories
标准页数:0
标准简介
Outlines automatic transfer switches for use in ordinary places to provide for lighting and power in emergency systems in optional stand-by systems in legally required stand-by systems. Describes transfer switches associated control devices including voltage sensing relays, frequency sensing relays, time delay relays. Describes enclosed, open and cover by pass/isolation switches.
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