熔断器属于配电电器，其用途是（）。 A．用于线路过负荷、短路

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问题单项选择题

熔断器属于配电电器，其用途是（）。

A．用于线路过负荷、短路或欠电压保护，也可用于不频繁接通和分断电路

B．主要用于电路隔离，开关能接通分断额定电流，组合电器具有短路和过负荷保护功能

C．电力系统中用于线路和设备的短路及过负荷保护

D．用于导线和家用电器过负荷或短路保护，漏电及人身触电保护

答案

参考答案：C

解析：

高压熔断器主要功能是对电路及其设备进行短路和过负荷保护。高压熔断器主要有户内交流高压限流熔断器(RN系列)、户外交流高压跌落式熔断器(RW系列)、并联电容器单台保护用高压熔断器(BRW型)三种类型。

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