3000 A直流大电流标准表的研制  

The Development of the 3000A DC Current Meter

作　　者：李亚娟[1] 曾舒帆[1] 张自长[1] 朱自科[1] LI Yajuan;ZENG Shufan;ZHANG Zichang;ZHU Zike(Yunnan Institute of Metrology and Testing Technology,Kunming 650228,China)

机构地区：[1]云南省计量测试技术研究院,云南昆明650228

出　　处：《仪表技术》2020年第9期42-45,共4页Instrumentation Technology

摘　　要：研制了一种以磁调制式直流比较仪为核心的直流大电流表,该直流大电流表实现了3000 A直流电流的非接触测量,准确度达到0.02级,满足了国防、军工、科研、电动车等领域对高精度大直流电流表的需求,可直接检定0.05级及以下级别的直流电流源,也可做实验室等测试用理想高精度大直流表。The large DC current meter is designed with the core of the magnetically modulated DC comparator.The DC current meter realizes non-contact measurement of 3000 A DC current,which reaches accuracy at level 0.02 and meets the demand for high precision large DC ammeter in the fields of the national defense,military,scientific research,electric cars.It can directly check 0.05 level and lower of the DC current source,and also can be the large DC current meter with ideal and high accuracy for the lab test.

关 键 词：大电流 直流电流比较仪 高精度 

分 类 号：TP[自动化与计算机技术]