鱼丸游戏

什么是电流互感器?电流互感器的作用是什么?

时间:2020-07-29 17:21:05 浏览:268

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电流互感器接被测电流的绕组(线圈匝数为N1),称之为一次绕组(或原边绕组、初中级绕组);接检测仪表的绕组(线圈匝数为N2)称之为二次绕组(或副边绕组、次级线圈绕组)。电流互感器一次绕组电流I1与二次绕组I2的电流比,叫具体电流比K。电流互感器在额定值电流下工作中时的电流比叫电流互感器额定值电流比,用Kn表示。Kn=I1n/I2n电流互感器(Currenttransformer通称CT)的功效是能够把标值很大的一次电流根据一定的变比变换为标值较小的二次电流,用于开展维护、精确测量等主要用途。如变比为400/5的电流互感器,能够把具体为400A的电流变化为5A的电流。