过电流
过电流(overcurrent,excess current)又称超电流,简称过流,是指电气设备上流过过大电流的情形。过电流会使设备发热,甚至有着火或是损害零件或设备的情形。常见的过电流原因包括短路、负载过大、设计错误、或是接地故障。为了避免过电流的,一般会加装保险丝、断路器、温度传感器或是限流设备等设备。
相关标准
- IEC 60364-4-43: Electrical installations of buildings – Part 4-43: Protection for safety – Protection against overcurrent
相关条目
- 过电压
- 限流设备
- 电气安全
- 电力系统故障
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