摘要
详细介绍了低功率因数瓦特表在测量中应该注意的问题,给出了功率表的测量原理和读数方法,讨论了测量不同功率时的接线方式。当被测电路的功率比较小时,采用直接和功率表相接方法;当被测电路的电压和电流超过仪表电压和电流的最大额定值时,就要用互感器和仪表相接。对使用互感器和功率表相接时的测量误差进行了分析。
Some noticeable problems in application of low power factor wattmeter are presented in detail, such as measure principle and readout method. The connection modes in various measured power are discussed. The wattmeter connects with measured circuit direct when the power is low, then connects with measured circuit though mutual inductor when the rating of wattmeter of the voltage or current is overrun. At last, the measurement error with mutual inductor is analyzed.
出处
《实验技术与管理》
CAS
2006年第10期36-37,62,共3页
Experimental Technology and Management
基金
河北省教育科学“十五”规划重点课题“面向21世纪电工电子系列课程教学体系改革与实施”资助(0110036)
关键词
低功率因数瓦特表
互感器
测量误差
low power factor wattmeter
mutual inductor
measurement error
作者简介
杨文荣(1969-),女,河北省沧州市人,硕士,在读博士,副教授,从事现代工程电磁场与磁技术方向的研究