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Transfer switching equipment Distribution electrical appliances Control and protection electrical appliances and terminal electrical appliances Intelligent Management System
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韩光电器是国内ATS中高端产品品牌领导者
双电源转换开关PC级与CB级的区别介绍
NEWS Time: 2022-06-14 Publisher: Hits: 16
1、PC级：无短路维护功用，短路时仍转换。能够接通和承载但不用于分断路路电流，宜用于放射式线路配电的重要负荷，当由树干式线路配电时需要加装过电流维护脱扣器。额外短时耐受电流应满意条件It2≥Qt,额外约束短路电流不应小于装置地址的较大三相对称短路电流有效值，转换时间一般为100mS。

2、CB级：主回路开关带有短路过载维护功用。配备有过电流脱扣器，能够接通并用于分断短路电流，应用时需一起满意配电体系对过电流维护器的特性要求；额外短路分断能力不应小于装置地址的较大三相对称短路电流初始值。CB级一般为1～3S.

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