单相电动系功率表测量线路的分析与探讨  

Analysis and Discussion on Measuring Circuit of Single-phase Electric Power System

作　　者：葛宝良 

机构地区：[1]绍兴县职业教育中心,绍兴312030

出　　处：《现代科学仪器》2009年第2期54-56,共3页Modern Scientific Instruments

摘　　要：由于电动系仪表在实验和工程测量方面有着广泛应用,而单相电动系功率表则是其中的一种,根据单相电动系功率表的原理,这种功率表不但可以测量直流功率,还可以测量交流功率,其测量线路有电压线圈前接法和电压线圈后接法二种。本文通过实验数据测量,对绝对误差和相对误差计算,分析了二种测量线路特点,根据分析的结果确定了这两种测量线路的适用场合。On account of widespread applications of electric power meter in the aspects of experiments and engineering measurements, and that single - phase electric power meter is one of them. According to the principle of singlephase electric power meter, it can not only measure direct current power, but also intercurrent power. It has two kinds of measuring circuits, which are the front connection and the post connection of voltage coil. The article analyzes the characteristics of these two kinds of measuring circuits via measuring experimental data and calculating absolute error and the relative error. According to analytic results, the suitable situations of these two kinds of measuring circuits are confirmed.

关 键 词：电流线圈 电压线圈 前接法 后接法 相对误差 绝对误差 

分 类 号：O4-34[理学—物理]