漏电断路器跳闸的几种常见原因及解决
漏电断路器的工作原理是:
正常工作时电路中除了工作电流外没有漏电流通过漏电保护器,此时流过零序互感器(检测互感器)的电流大小相等,方向相反,总和为零,互感器铁芯中感应磁通也等于零,二次绕组无输出,自动开关保持在接通状态,漏电保护器处于正常运行。当被保护电器与线路发生漏电或有人触电时,就有一个接地故障电流,使流过检测互感器内电流矢量和不为零,互感器铁芯中感应出现磁通,其二次绕组有感应电生,经放大后输出,使漏电脱扣器推动自动开关跳闸达到漏电保护的目的。
漏电断路器跳闸故障现象的几种常见原因及解决:
第1种:漏电断路器的额定电流小于线路实际工作电流,发生过载保护跳闸。
故障现象:用电负荷较大时,漏电开关跳闸。
故障原因:经分析线路接线正确无误,1、负荷计算错误漏电开关选错,开关的额定电流小于线路实际工作电流,漏电开关过载故障跳闸;2、负荷计算正确,漏电开关使用正确,人为使用大功率电器设备,漏电开关过载保护跳闸。
Reference
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解决:1、烘干线路,绝缘强度。2、检查线路若是短路所致,排除短路故障。
第4种:有人触电,插座回路漏电断路器跳闸。
故障现象:插座回路漏电开关突然跳闸。
故障原因:有人触电。
解决:宣传教育用户用电,避免触电事故发生,若发现有人触电,应及时抢救伤者。
第5种:员工接线不正确,照明回路中将N线接到PE线上了
故障现象:插座回路能正常用电,照明回路用电时,中的总漏电开关跳闸。
故障原因:经分析,线路接线不正确,将照明回路中的N线误接到PE线上了。
解决:进行改线,将照明回路中的PE线改接到N线上。
第6种:员工接线不正确,插座盒中的N线与PE线接错了
故障现象:照明回路能正常用电,插座回路用电时,ALY中的插座漏电开关跳闸,有时AL1中的总漏电开关也跳闸。
故障原因:经分析,线路接线不正确,将插座盒中的N线与PE线接错了。
解决:进行改线,将插座盒中的N线与PE线对调。
第7种:员工接线不正确,在AL1箱中N线与PE线用混了
故障现象:插座回路或照明回路用电时,AL1中的总漏电开关都跳闸。
故障原因:经分析,线路接线不正确,将AL1箱中N线与PE线用混了。
解决:在AL1箱的总漏电开关负荷端,将N线与PE线对调
Reference
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特点
??永磁交流器的革新技术特点是用永磁式驱动机构取代了的电磁铁驱动机构,即利用磁铁与微电子模块组成的控制装置,置换了产品中的电磁装置,运行中无工作电流,仅由微弱电流(0.8-1.5mA)。微电子模块中包含六个基本的部分:1.电源整流; 2.控制电源电压实时检测; 3.释放储能(有的也有吸合储能,但不是必须有); 4.储能电容电压检测; 5.抗门槛电压检测;6.释放逻辑电路。这6部分是永磁操作机构电子控制部分的必要组成,如果缺少任何一个部分,操作机构在特定的情况下就没常工作。这6个部分,也就决定了操作机构可以具备抗晃电功能。
??①.节能:
??器的合闸保持是靠合闸线圈通电产生电磁力来克服分闸弹簧来实现的,一旦电流变小使产生的电磁力不足以克服弹簧的反作,器就不能保持合闸状态,所以,交流器的合闸保持是必须靠线圈不断的通电来维持的,这个电流从数十到数千毫安。而永磁交流器合闸保持依靠的是永磁力,而不需要线圈通过电生电磁力来进行合闸保持,只有电子模块的0.8mA—1.5mA的工作电流,因而,能大限度地节约电能,节电率高达99.8%以上。
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技术参数
ePT 主要特性
符合标准:YD/T 1235.1-2002
工业和信息化部(MIIT) 通信防雷产品标准
符合性认定
试验类别:II / T2
工作频率:50/60 Hz
额定工作电压Uo:230 V AC
大持续工作电压Uc:385 V
大放电电流Imax:160/120/100/80/60/40/20/10 kA
标称放电电流In:80/60/50/40/30/20/10/5 kA
电压保护水平Up:2.1/2.0/1.9/1.8/1.7/1.6/1.3/1.1 kV
极数:2P/1P+N/3P+N
接地系统:TT 和TN
ePT DC 主要特性
符合标准:YD/T 1235.1-2002
工业和信息化部(MIIT) 通信防雷产品标准
符合性认定
试验类别:II / T2
额定工作电压Un:240/48 V
大持续工作电压Uc:350/75 V
大放电电流Imax:40 kA
标称放电电流In:20 kA
电压保护水平Up:1.2/0.5 kV
极数:2P
其他参数
本地指示功能:通过机械指示
窗口显示工作状态
绿色:正常工作状态
红色:内部已损坏,需要更换
远程指示功能:通过遥信触点
远程指示工作状态
IP 防护等级:IP20
响应时间:25 ns
储存温度:-40℃ ~+70℃
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