V2EX rated power

Rated Power

定义 Definition

rated power额定功率;指设备在规定条件下、可长期稳定运行时所标定的输出功率或消耗功率(常见于电机、变压器、电源适配器、扬声器、发动机等的铭牌参数)。在不同领域也可能指“额定输出功率/额定输入功率”,需结合上下文。

发音 Pronunciation (IPA)

/retd par/

例句 Examples

The motor’s rated power is 2 kW.
这台电机的额定功率是2千瓦。

To avoid overheating, the inverter should be operated below its rated power when the ambient temperature is high.
为避免过热,当环境温度较高时,逆变器应在低于其额定功率的条件下运行。

词源 Etymology

rated 来自动词 rate(评定、定级、规定),其词根含义与“计算、估定”有关;加上过去分词 -ed 表示“被规定/被评定的”。power 源自拉丁语系词汇,表示“力量、功率、能力”。合起来 rated power 就是“被规定的(可持续)功率水平”,常用于工程与产品规格说明。

相关词 Related Words

文献与作品 Literary / Notable Works

  • The Art of Electronics(Horowitz & Hill)在电源与功放等器件参数讨论中常涉及功率额定值(rated power/ power rating)的概念。
  • Electric Machinery Fundamentals(Stephen J. Chapman)电机“额定值/额定功率”是核心术语之一。
  • IEC/IEEE 等工程标准与产品规范(如电机、变压器、开关电源相关标准)大量使用 rated power 来定义设备的标称工作能力与测试条件。
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