Analysis on Causes of Electrical Shock Accident of Fountain

WANG Houyu（China Aviation Planning and Construction Development Co.，Ltd.， Beijing 100120，China）

 

 

    Abstract Electrical shock accident of fountain occurs frequently in China. Electrical equipments with a voltage of 220 V and above should be used for fountain and over—high voltage will result in electrical shock accident underwater. The author believes that different from that above ground，the electrical shock accident of fountain is mainly caused by underground voltage gradient or electric field. Therefore，relevant analysis is conducted and key points to prevent electrical shock accident during electrical design under the current conditions in China are presented.

    Key words　Electrical safety of fountain Voltage gradient Protective separation Power supply of isolating transformer Underwater IP protection level

 

    摘 要 我国喷水池电击事故屡有发生。喷水池内电气设备需采用220 V及以上电压，过高电压在水下很易引发电击事故。作者认为喷水池内电击事故的发生与地面上不同，它主要由水下电压梯度或电场引起。故对此进行分析，并提出在我国现时条件下喷水池电气设计中防电击的要点。

    关键词 喷水池电气安全 电压梯度 保护分隔 隔离变压器供电 水下IP防护等级