首页 > 供应商机 > 秦皇岛施耐德交流接触器 岳阳施耐德接触器厂家批发
秦皇岛施耐德交流接触器 岳阳施耐德接触器厂家批发
价格：88.00起
长沙汇业电气工程有限公司
联系人：龙顺
电话：15874013311
地址：芙蓉区远大一路253号818-820号
产品规格：
产品数量：
包装说明：
关 键 词：秦皇岛施耐德交流接触器
行 业：电气 低压电器 继电器
发布时间：2021-05-26
接触器
接触器分为交流接触器（电压AC）和直流接触器（电压DC），它应用于电力、配电与用电场合。接触器广义上指工业电中利用线圈流过电生磁场，使触头闭合，以达到控制负载的电器。作用：在电工学上，因为可快速切断交流与直流主回路和可频繁地接通与大电流控制（达800A）电路的装置，所以经常运用于电动机做为控制对象﹐也可用作控制工厂设备﹑电热器﹑工作母机和各样电力机组等电力负载，接触器不仅能接通和切断电路，而且还具有低电压释放保护作用。接触器控制容量大，适用于频繁操作和远距离控制,是自动控制系统中的重要元件之一。在工业电气中其用处相当广泛。
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（1）额定电流接触器触点在额定工作条件下的电流值。380V三相电动机控制电路中，额定工作电流可近似等于控制功率的两倍。常用额定电流等级为5A、10A、20A、40A、60A、100A、150A、250A、400A、600A。（3）通断能力可分为大接通电流和大分断电流。大接通电流是指触点闭合时不会造成触点熔焊时的大电流值；大分断电流是指触点断开时能可靠灭弧的大电流
应用范围1、工业，基础设施，建筑2、Tesys D接触器可以用于任何需要电动机起动器的场合周围空气温度为：-5℃～+40℃。内其平均值不**过+35℃；海拔高度：不**过2000m；大气条件：在+40℃时空气相对湿度不**过50%，在较低温度下可以有较高的相对湿度，湿月的月平均低温度不起过+25℃，该月的月平均大相对湿度不**过90%，并考虑因温度变化发生在产品上的凝露。安装类别：Ⅲ类；污染等级：3级；安装条件：安装面与垂直面倾斜度不大于±5°；
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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。
*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。
*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。
*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。
*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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断路器工作原理编辑
断路器一般由触头系统、灭弧系统、操作机构、脱扣器、外壳等构成。
当短路时，大电流（一般10至12倍）产生的磁场克服反力弹簧， 脱扣器拉动操作机构动作，开关瞬时跳闸。当过载时，电流变大，发热量加剧，双金属片变形到一定程度推动机构动作（电流越大，动作时间越短）。
现在有电子型的，使用互感器采集各相电流大小，与设定值比较，当电流异常时微处理器发出信号，使电子脱扣器带动操作机构动作。
断路器的作用是切断和接通负荷电路，以及切断故障电路，防止事故扩大，保证安全运行。而高压断路器要开断1500V，电流为1500-2000A的电弧，这些电弧可拉长至2m仍然继续燃烧不熄灭。故灭弧是高压断路器必须解决的问题。
吹弧熄弧的原理主要是冷却电弧减弱热游离，另一方面通过吹弧拉长电弧加强带电粒子的复合和扩散，同时把弧隙中的带电粒子吹散，迅速恢复介质的绝缘强度。
低压断路器也称为自动空气开关，可用来接通和分断负载电路，也可用来控制不频繁起动的电动机。它功能相当于闸刀开关、过电流继电器、失压继电器、热继电器及漏电保护器等电器部分或全部的功能总和，是低压配电网中一种重要的保护电器。
低压断路器具有多种保护功能（过载、短路、欠电压保护等）、动作值可调、 分断能力高、操作方便、安全等优点，所以目前被广泛应用。结构和工作原理低压断路器由操作机构、触点、保护装置（各种脱扣器）、灭弧系统等组成。
低压断路器的主触点是靠手动操作或电动合闸的。主触点闭合后，自由脱扣机构将主触点锁在合闸位置上。过电流脱扣器的线圈和热脱扣器的热元件与主电路串联，欠电压脱扣器的线圈和电源并联。当电路发生短路或严重过载时，过电流脱扣器的衔铁吸合，使自由脱扣机构动作，主触点断开主电路。当电路过载时，热脱扣器的热元件发热使双金属片上弯曲，推动自由脱扣机构动作。当电路欠电压时，欠电压脱扣器的衔铁释放。也使自由脱扣机构动作。分励脱扣器则作为远距离控制用，在正常工作时，其线圈是断电的，在需要距离控制时，按下起动按钮，使线圈通电，衔铁带动自由脱扣机构动作，使主触点断开
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