保护用电流互感器10%误差的校核方法

The Current Transformer Protection 10% Error of Checking Method

对于已经投入运行的电流互感器,测量其10%误差曲线较为困难,现场通常进行其伏安特性及二次负载试验并以此来进行电流互感器10%误差校核。并根据现场收集的典型电流互感器参数等数据进行实例计算,阐明电流互感器特性是否满足要求。并提出了在不满足10%误差要求时,应如何采取措施。

As to have already been put into operation in the current transformer, measuring its 10% error curve is very difficult, usually for the scene the current-voltage characters and the second load test and so to current transformer 10% error checking. And according to the collection of typical current transformer parameters, such as data calculation examples, expounds the current transformer characteristics whether meet the requirements. And put forward in not meet the requirement of 10% when, should how to take measures.