This paper explains the importance of installing current leakage fire alarm system in the protection of electricity fire disaster through analysis of the developing mechanism of electricity fire.

通过对电气火灾产生的机理，说明设置漏电火灾报警系统在预防电气火灾的重要性。

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It can detect the leakage current and determine the failures, when identifying the fault status, it can send out alarm signals in time.

它能在检测到漏电流后，进行故障判断，当确定为故障状态时能及时发出报警信号。

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