UL 347 Ed. 5 标准详情
- 标准号:UL 347 Ed. 5
- 中文标题:中压交流接触器,控制器和控制中心
- 英文标题:Medium-voltage Ac Contactors, Controllers, And Control Centres
- 标准类别:美国保险商实验室UL
- 发布日期:
Applies to ac contactors with rated voltages of 1501 to 7200 V, and metal-enclosed contactor-based controllers, control centres, and other control assemblies and associated equipment with rated voltages of 751 to 7200 V, designed for operation at fre
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