| 低功率因数瓦特表应用的有关问题的探讨 |
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| 引用本文： | 杨文荣,张惠娟,姚昆明. 低功率因数瓦特表应用的有关问题的探讨[J]. 实验技术与管理, 2006, 23(10): 36-37,62 |
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| 作者姓名： | 杨文荣 张惠娟 姚昆明 |
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| 作者单位： | 河北工业大学,电气与自动化学院,天津,300130 |
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| 基金项目： | 河北省教育科学规划项目 |
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| 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。
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| 关 键 词： | 低功率因数瓦特表 互感器 测量误差 |
| 文章编号： | 1002-4956（2006）10-0036-02 |
| 收稿时间： | 2005-12-29 |
| 修稿时间： | 2005-12-292006-03-28 |
Discussion on application of low power factor wattmeter |
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| YANG Wen-rong,ZHANG Hui-juan,YAO Kun-ming. Discussion on application of low power factor wattmeter[J]. Experimental Technology and Management, 2006, 23(10): 36-37,62 |
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| Authors: | YANG Wen-rong ZHANG Hui-juan YAO Kun-ming |
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| Affiliation: | School of Electrical Engineering, Hebei University of Technology, Tianjin 300130, China |
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| Abstract: | 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. |
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| Keywords: | low power factor wattmeter mutual inductor measurement error |
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