V2EX line-voltage

Line Voltage

定义 Definition

line voltage 指电力系统中“线路之间”的电压,通常是两根相线之间的电压(如三相系统中的相相电压),区别于 phase voltage(相电压,指相线与中性线之间)。在一些语境中也可泛指供电线路的额定电压水平(如 120V/230V/400V 等)。

发音 Pronunciation

/lan voltd/

例句 Examples

The motor is rated for 400 V line voltage.
这台电机的额定线电压是 400 伏。

In a three-phase system, the line voltage is √3 times the phase voltage when the load is balanced.
在平衡负载的三相系统中,线电压等于相电压的 √3 倍。

词源 Etymology

line 原意为“线、线路”,在电工语境中常指电力“线路/导线”;voltage 来自 volt(伏特,电压单位,纪念科学家 Alessandro Volta)+ -age(名词后缀)。合起来 line voltage 就是“线路上的电压/线间电压”,多用于交流配电与三相电路分析。

相关词 Related Words

文学与作品 Literary Works

  • Ugly’s Electrical References(Charles R. Miller):在三相、电机与配电速查章节中常用 line voltage 区分相电压。
  • Electrical Engineering: Principles and Applications(Allan R. Hambley):讲解三相电路关系(线电压与相电压)时频繁出现该术语。
  • *IEEE Std 141 (Red Book)*(IEEE):配电系统设计与术语描述中使用 line voltage 讨论系统电压等级与应用场景。
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