AK-CTB-12D主要用于电流互感器

AK-CTB-12D主要用于电流互感器二次侧由于各种异常引起的过电压保护。该保护器并接于电流互感器二次绕组的两端，正常运行时泄露电流小，呈高阻状态。由于漏电流小（小于1mA），对该回路保护动作值和表计准确精度的影响可以忽略不计。此时保护器控制电路不工作。

       当电流互感器二次回路开路或一次侧绕组出现异常过流时，在二次绕组中产生的电压正常运行电压，（其数值取决于电流互感器本身参数和运行工况），AK-CTB系列保护器能在过电压产生时有效地被限制在 50ns内，从而避免了过电压危害并地将二次绕组短路并发光提示，同时提供一组闭锁差动遥信接点。故障排除后，将其复位即可重复使用，动作寿命可达十万次之多。避免了保护动作后换保护器的麻烦，运行加方便。

保护绕组数：12个绕组以内      安装方式：导轨式安装

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