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时间继电器安装演示

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浏览：40次 | 提问时间： 08-04 11:08

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6个答案

桑榆未晚 08-04 11:09

提到的这个卡装在接触器（也包括接触式继电器）上的东西正式名称叫空气延时头。LA2属于通电延时，因为它没有*的电磁机构，延时范围有3种规格。其延时时间靠圆形钮头旋转改变里面的粉末冶金薄片的进气量来调节，必须“依附”在别的接触器或继电器上，空气延时头的机构也被带动、LA3是断电延时。当接触器吸合动作时。这种空气延时头两侧各有一个延时触头（1常开1常闭），它不能称为时间继电器

丢弃过去 08-04 11:17

如果装在摩托车上。考虑到电流较大，对电瓶不利的。装继电器的目的是为了减小喇叭按钮的触电通过电流，电流真的很大的，只跟电瓶容量和摩托由此产生的压降有关，且发电机的发电功率也大，尽量不较长时间地按，明显比没有装蜗牛喇叭的时候换得勤快。我自己的摩托是豪爵的，加载在喇叭上的电压不足。因为电流比较大蜗牛喇叭声音宏亮，对摩托来说用电负荷太重了，发声时候电流大；*电瓶容量大，知道电流大，所以一般只适合装在*上，保护喇叭按钮，摩托电瓶的容量一般都比较小，原先的盆形喇叭声音太低。压降大了以后，一只高音，才几个安时而已），我就自己换了个*蜗牛喇叭，尽管如此，压降也大，尤其是一对高低音喇叭，喇叭就不响了，一只低音）。我自己因为是驾驶员，我过一段时间就要换喇叭按钮，所以我一般按喇叭的时候时间一般都比较短。装不装继电器跟喇叭会不会响无关，装了继电器照样不响，为了保护按钮和电瓶（长时间按喇叭耗电。如果电瓶容量不足，我只装了一只高音的（蜗牛喇叭一般一对，所以*上一般也是装继电器的，但是蜗牛喇叭声音宏亮的原因是本身功率大

疑心病 08-04 11:26

你需要实现什么功能？这决定电路的设计。一般来说温控室风机在启动后立即运行，停止后延迟一断时间停止

原谅我有煞气 08-04 11:34

你家装的不是继电器，使空气开关；不用跳闸原因有二：1.开关失灵2.家里线路短路

羞哒哒滴逗比萌哒哒滴开 08-04 11:42

因为制动时电流比较大，所以需要加继电器控制直流电通断。再用时间继电器控制加直流电的时间，这样就不用时间控制，可以用电容来充电，停机是电容给电机放电制动，制动的话，需要直流电。你那个电机启停如果不频繁的话，一般1秒就可以，可以直接用220V整流出110V直流，然后加到电机任意绕组就可以你那电机是多少伏

葬爱 08-04 11:50

用作保压控制可以与电接点压力表配合，加在上升回路中可以控制升压的压力大小，用在回程回路中可以控制回程停止的位置

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