电流互感器二次额定电流和二次允许负荷对测量结果的影响  

Influence of Current Transformer's Secondary Rated Current and Secondary Permissible Load on Measuring Results

作　　者：王梅 WANG Mei(Shanghai Green Beauty Design Engineering Co., Ltd., Shanghai 201600, China)

机构地区：[1]上海绿美工程设计有限公司,上海201600

出　　处：《现代建筑电气》2017年第10期40-42,共3页Modern Architecture Electric

摘　　要：为解决当电流互感器装设点与实际控制点相距较远时,电流互感器的精度达不到要求,电流表读数与实际值相差较大的问题,阐述了电流互感器的二次额定电流和二次允许负荷的计算方法,以及对电流测量精度的影响。结合工程实例,采用增大电流互感器的二次允许负荷和减小二次额定电流相结合的方法,使得电流互感器的二次实际负荷小于二次额定负荷,解决了电流测量精度不满足要求的问题,从而测量结果与实际值较接近。When the location of the current transformers is far away from the actual control points,the precision of the current transformer can’t meet the requirements.In order to solve this problem,this paper described the calculation method of the secondary rated current and the secondary permissible load,and the influence on current measurement.According to the engineering projects,the secondary permissible load of current transformer was increased and the secondary rated current of the current transformer was decreased.Then the secondary real load is less than the secondary rated load,so that the measured results are closed to the actual results.

关 键 词：电流互感器 二次允许负荷 二次实际负荷 二次额定电流 

分 类 号：TM452[电气工程—电器]