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自动转换开关定义

2013/12/21 17:53:16      点击:
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自动转换开关电器,即ATSE(Automatic Transfer Switching Equipment)。主要适用于额定电压交流不超过1000V 或直流不超过1500V 的紧急供电系统,在转换电源期间中断向负载供电。
1.ATSE的定义
1.1 转换开关电器(转换开关)Transfer Switching Device (Transfer Switch)
将一个或几个负载电路从一个电源转换至另一个电源的电器。
1.2 自动转换开关电器(ATSE) Automatic Transfer Switching Equipment (ATSE)
由一个(或几个)转换开关电器和其它必需的电器组成,用于监测电源电路、并将一个或几个负载电路从一个电源自动转换至另一个电源的电器。电气行业中简称为“双电源自动转换开关”或“双电源开关”。
2.ATSE的分类
ATSE 可分为两个级别:PC 级和CB 级。
PC级ATSE :只完成双电源自动转换的功能,不具备短路电流分断(仅能接通、承载)的功能;
CB级ATSE :既完成双电源自动转换的功能,又具有短路电流保护(能接通并分断)的功能。
3.ATSE的使用类别
3.1 交流:
AC-31A/B 电阻负载;
AC-33A/B 电动机负载或含电动机、电阻负载和30%白炽灯负载的混合负载;
AC-35A/B 放电灯负载;
AC-36A/B 白炽灯负载。
3.2 直流:
DC-31A/B 电阻负载;
DC-33A/B 电动机负载或含电动机的混合负载;
DC-36A/B 白炽灯负载。
注:A为频繁操作,B为不频繁操作。