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安装使用漏电保护器是起重机电气安全防护的重要措施之一,对于防止人身直接触电效果十分明显,目前已得到广泛应用。因安装使用人员对漏电保护器的漏电保护原理缺乏了解,往往由于接线错误而导致漏电保护器不能正常工作,甚至因此完全失掉漏电保护功能。某建筑工地1台塔式起重机安装完毕试车时,起重机司机每次按下开车警铃按钮时,地面配电箱中起重机漏电保护器便立即跳闸,电气安装人员反复查找原因,始终未能查明问题所在。
Installation and use of leakage protector is one of the important measures of crane electrical safety protection, to prevent direct electric shock effect is very obvious, has been widely used. Due to the lack of understanding of the principle of leakage protection of the earth leakage protector by the installation user, the earth leakage protector may not work normally due to wrong wiring or even completely lose the earth leakage protection function. When a tower crane in a construction site is installed and commissioned, the crane driver presses the alarm bell button on the ground and the crane leakage protector immediately trims in the ground distribution box. The electrical installer repeatedly finds out the cause and fails to find out why problem lies in.