A new edition is being proposed for ac contactors with rated voltages of 1501 to 7200 V, and metal-enclosed contactor-based controllers, control centers, and other control assemblies and associated equipment with rated voltages of 751 to 7200 V, designed for operation at frequencies of 50 or 60 Hz on three-phase systems. The proposed standard covers equipment intended for use in ordinary (non-hazardous) locations and installed in accordance with the applicable local installation codes and standards.
ANSI/UL 347-2009由美国国家标准学会 US-ANSI 发布于 2009。
ANSI/UL 347-2009 在中国标准分类中归属于: K43 高压开关设备,在国际标准分类中归属于: 29.130.10 高压开关装置和控制器。
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