kilovolt ampere

简明释义

千伏安千伏安

英英释义

例句

1.To ensure safety, the transformer is rated at 200 kilovolt ampere (千伏安).

为了确保安全，变压器的额定值为200 千伏安 (千伏安)。

2.Our new solar inverter operates at a maximum output of 10 kilovolt ampere (千伏安).

我们新的太阳能逆变器的最大输出为10 千伏安 (千伏安)。

3.The generator has a capacity of 500 kilovolt ampere (千伏安), making it suitable for large events.

这台发电机的容量为500 千伏安 (千伏安)，适合大型活动。

4.Each server rack consumes about 5 kilovolt ampere (千伏安) of power.

每个服务器机架大约消耗5 千伏安 (千伏安) 的电力。

5.The industrial plant requires a power supply of 1500 kilovolt ampere (千伏安) for its machinery.

该工业厂房的机器需要1500 千伏安 (千伏安) 的电源供应。

作文

In the world of electrical engineering, understanding the various units of measurement is crucial for both professionals and students alike. One such unit that often comes up in discussions about power systems is kilovolt ampere. The term kilovolt ampere refers to a unit of apparent power in an electrical circuit and is represented by the symbol kVA. It is a measure that combines both voltage and current without taking into account the phase angle between them. This makes it particularly useful in alternating current (AC) systems where the relationship between voltage and current can be complex.To break it down further, the term 'kilo' means one thousand, so one kilovolt ampere is equal to one thousand volt-amperes (VA). The volt-ampere itself is defined as the product of voltage in volts (V) and current in amperes (A). Therefore, if we have a circuit operating at 1 kV (kilovolt) and drawing a current of 1 A, the apparent power would be 1 kVA. This is an important concept because it helps engineers determine the capacity of electrical devices and systems.One of the key applications of kilovolt ampere is in sizing transformers and generators. When designing these components, engineers must ensure that they can handle the load without overheating or becoming damaged. By calculating the total apparent power required for a given application, they can select equipment that operates efficiently and safely. For instance, if a factory requires 500 kVA to run its machinery, the transformer installed must be rated for at least that amount to ensure reliable operation.Another significant aspect of kilovolt ampere is its role in power factor calculations. The power factor is a measure of how effectively electrical power is being converted into useful work output. It is defined as the ratio of real power (measured in kilowatts, kW) to apparent power (measured in kilovolt ampere). A power factor of 1 indicates that all the power is being used effectively, while a lower power factor signifies inefficiencies in the system. Understanding this relationship is essential for optimizing energy consumption and reducing costs in industrial settings.Furthermore, the use of kilovolt ampere extends beyond just transformers and generators. It is also relevant in the context of power distribution systems. Utilities often specify their equipment ratings in kVA to ensure that they can meet the demand of their customers. This is particularly important in areas with high loads, such as commercial districts or manufacturing plants, where the need for reliable power supply is critical.In summary, the term kilovolt ampere is a fundamental concept in the field of electrical engineering. It serves as a vital measurement for determining the apparent power in electrical circuits, which is essential for the proper design and operation of electrical equipment. Understanding kilovolt ampere not only helps engineers and technicians make informed decisions but also plays a significant role in enhancing the efficiency and reliability of power systems. As technology continues to advance, the importance of grasping these fundamental concepts will only grow, making it imperative for those in the field to have a solid understanding of kilovolt ampere and its applications.

在电气工程的世界中，理解各种测量单位对专业人士和学生来说都是至关重要的。在关于电力系统的讨论中，一个常常出现的单位是千伏安。术语千伏安指的是电路中表观功率的一个单位，符号为kVA。它是一个将电压和电流结合起来的度量，并没有考虑它们之间的相位角。这使得它在交流（AC）系统中尤其有用，因为电压和电流之间的关系可能非常复杂。进一步解释一下，'kilo'的意思是一千，因此一个千伏安等于一千伏安（VA）。伏安本身被定义为电压（以伏特为单位，V）和电流（以安培为单位，A）的乘积。因此，如果我们有一个以1 kV（千伏）运行并抽取1 A电流的电路，则表观功率将为1 kVA。这是一个重要的概念，因为它帮助工程师确定电气设备和系统的容量。千伏安的一个关键应用是在变压器和发电机的尺寸设计中。在设计这些组件时，工程师必须确保它们能够承受负载而不会过热或损坏。通过计算给定应用所需的总表观功率，他们可以选择高效且安全运行的设备。例如，如果一家工厂需要500 kVA来驱动其机械设备，则安装的变压器必须至少具有该额定值，以确保可靠运行。千伏安的另一个重要方面是它在功率因数计算中的作用。功率因数是有效电力转换为有用功输出的效率的衡量标准。它被定义为实际功率（以千瓦为单位，kW）与表观功率（以千伏安为单位）之间的比率。功率因数为1表示所有功率都被有效使用，而较低的功率因数则表示系统中的低效。理解这种关系对于优化工业环境中的能源消耗和降低成本至关重要。此外，千伏安的使用不仅限于变压器和发电机。它在电力分配系统中也很相关。公用事业公司通常以kVA为单位指定其设备额定值，以确保能够满足客户的需求。这在负荷高的地区尤为重要，例如商业区或制造工厂，在这些地方，对可靠电力供应的需求至关重要。总之，术语千伏安是电气工程领域的一个基本概念。它作为确定电路中表观功率的重要测量，是电气设备设计和操作的必不可少的部分。理解千伏安不仅帮助工程师和技术人员做出明智的决策，还在提高电力系统的效率和可靠性方面发挥着重要作用。随着技术的不断进步，掌握这些基本概念的重要性只会增加，因此在该领域的人们必须对千伏安及其应用有深入了解。