推荐回答（4个）
社会上因使用“节电神器”而出现的偷电、窃电的现象层出不穷。供电部门提醒广大用户，不要轻信市面上的节电器、节能电表等节电装置，这些设备或将成为偷电、窃电的元凶。
案例：
电费增至原来的9倍 节电器不节电
“为什么我家用电量突然从100多度飙到900多度，你们有没有抄错表？”2014年8月21日，广东肇庆市怀集县的闲先生收到电费信息后，气冲冲跑到怀集局诗洞中心所营业厅讨说法。经过供电部门仔细检修发现，偷电的元凶竟是新买的电子省电器，该电器存在着严重的漏电现象，泄漏电流为0.42安培，闲先生这两月的电费增至原来的9倍。
据了解，2014年5月，闲先生听信市场上商贩的说服，为了节省用电量，从街边买回一个电子省电器，可万万没想到“省电神器”摇身变为“偷电老虎”。
据供电部门介绍，闲先生所买的只是一个普通的电容器，根本起不到省电的作用，只能起到略微的电压补偿作用。并且，电容器在遭受雷击破坏后会导致大量放电，不仅不能省电，反而成了“吃电老虎”。
节电器本质上是一个电容器.在感性负载多的电路中是有作用的!感性负载在家庭中现在存在很多了，我们使用的电风扇,空调,冰箱都是感性阻性负载，因为他们都含有是电动机(空调冰箱中叫压缩机).感性负载一定会产生很多无功功率.那么加上容性负载可以改变电流电压相位，从而起到补偿作用，达到提高有功功率，进而省电. 像企业中基本上都需要加装容性负载，因为企业中电动机很多.另外电力部门在变压器近端也需要加装容性负载，从而提升有功功率.我的建议：1,如果家里都是电灯,电视机等阻性负载，可以无所谓.2,如果家里面有好几台感性负载，如冰箱,非变频空调,加上一个节电器(本质上就是电容器)，在电路回路中增加了容性负载是可以起到改善相位作用.3,如果家中都是变频设备，如变频冰箱，变频空调等，变频设备具有自动补偿电流电压相位从而达到省电的功能，可以不使用.4,如果感性负载多，节电效果一定是存在的.如果节电器太贵，一到两年省电不够买一个节电器，对自己得不偿失.但是，对整个电网是绝对有好处了，因为我们真的省电了.
家庭用的智能智能节电器其实是一种小型通用的节电保护装置，它是通过抑制瞬变浪涌，消除因瞬变浪涌不断冲击线路而积累的积碳，畅通线路电流，降低电器、线路温度，改善功率因素等方式从而实现对电器的保护和节电，具有节电、保护及延长设备使用寿命等多重功效。安装时间越长，节电效果越好。
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