系统地分析了低压配电线路保护的要求和实施方法，叙述了熔断器和断路器的选型，及其参数的整定；

The paper analyse the requirements and implementation ways for protection of LV distribution line. Type selection and parameter setting of fuse and circuit-breaker are introduced.

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熔断器也可用在配电网的许多一次线路中，在少数情况下，也用于大功率容量的高压设备。

Fuse are also used in many applications on distribution primary circuits and to a limited extent on bulk power high-voltage equipment.

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