kilovolt ampere

简明释义

千伏安

英英释义

例句

1.The UPS system can supply up to 300 kilovolt ampere (千伏安) during a power outage.

该不间断电源系统在停电期间可以提供高达300 千伏安 (千伏安) 的电力。

2.In order to power the new data center, we need a transformer rated at 1000 kilovolt ampere (千伏安).

为了为新的数据中心供电，我们需要一个额定为1000 千伏安 (千伏安) 的变压器。

3.For safety reasons, the installation must not exceed 150 kilovolt ampere (千伏安) in total capacity.

出于安全考虑，安装的总容量不得超过150 千伏安 (千伏安)。

4.The electrical system is designed to handle loads up to 200 kilovolt ampere (千伏安) without tripping.

该电气系统设计能够处理高达200 千伏安 (千伏安) 的负载而不跳闸。

5.The generator produces a maximum output of 500 kilovolt ampere (千伏安), making it suitable for industrial applications.

该发电机的最大输出为500 千伏安 (千伏安)，使其适合工业应用。

作文

In the world of electrical engineering, understanding the various units of measurement is crucial for both professionals and enthusiasts alike. One such important unit is kilovolt ampere, which is often abbreviated as kVA. This unit plays a significant role in the field of power generation and distribution, as it helps to quantify the apparent power in an electrical system. To fully grasp the concept of kilovolt ampere, it is essential to break down its components and understand its applications.Firstly, the term 'volt' refers to the unit of electric potential, while 'ampere' measures the flow of electric current. When these two units are combined, they form the basis of kilovolt ampere, which represents the product of voltage and current in a circuit. Specifically, one kilovolt ampere is equal to 1,000 volt-amperes (VA). This conversion is significant because it allows engineers to express power levels in a more manageable way, especially when dealing with larger systems.The importance of kilovolt ampere becomes evident when discussing electrical equipment such as transformers and generators. For instance, a transformer rated at 100 kVA can handle a maximum load of 100 kilovolt amperes. This rating is crucial for ensuring that the equipment operates efficiently and safely under various load conditions. If the load exceeds this rating, it can lead to overheating and potential failure of the equipment.Moreover, kilovolt ampere is particularly relevant in the context of three-phase systems, which are commonly used in industrial applications. In these systems, the total apparent power is calculated by multiplying the line voltage by the line current and then adjusting for the number of phases. Understanding how to calculate and interpret kilovolt ampere in three-phase systems enables engineers to design and implement robust electrical systems that meet the demands of modern industry.Another critical aspect of kilovolt ampere is its relationship with power factor, which is a measure of how effectively electrical power is being converted into useful work output. The power factor is defined as the ratio of real power, measured in kilowatts (kW), to apparent power, measured in kilovolt ampere. A power factor of less than one indicates that not all the apparent power is being used effectively, leading to inefficiencies in the system. This relationship highlights the importance of accurately measuring and managing kilovolt ampere to optimize energy consumption and reduce operational costs.In conclusion, the concept of kilovolt ampere is fundamental in the field of electrical engineering. Its significance lies in its ability to represent apparent power in a clear and concise manner, allowing engineers to assess the capacity of electrical systems and equipment. By understanding the nuances of kilovolt ampere, professionals can ensure that their designs are efficient, safe, and capable of meeting the demands of contemporary electrical loads. As technology continues to advance, the relevance of kilovolt ampere will only grow, making it an essential component of electrical engineering education and practice.

在电气工程的世界里，理解各种测量单位对专业人士和爱好者来说都是至关重要的。其中一个重要的单位是千伏安，通常缩写为kVA。这个单位在发电和配电领域发挥着重要作用，因为它帮助量化电气系统中的视在功率。要充分理解千伏安的概念，有必要分解其组成部分并了解其应用。首先，“伏特”一词指的是电势的单位，而“安培”则测量电流的流动。当这两个单位结合在一起时，就形成了千伏安的基础，它表示电路中电压和电流的乘积。具体而言，一个千伏安等于1,000伏安（VA）。这个转换是重要的，因为它允许工程师以更易管理的方式表达功率水平，特别是在处理较大系统时。千伏安的重要性在讨论变压器和发电机等电气设备时变得显而易见。例如，额定为100 kVA的变压器可以处理最大负载为100千伏安。这一额定值对于确保设备在各种负载条件下高效和安全地运行至关重要。如果负载超过此额定值，可能会导致设备过热和潜在故障。此外，千伏安在三相系统的背景下尤为相关，三相系统在工业应用中被广泛使用。在这些系统中，总视在功率通过将线路电压乘以线路电流并调整相数来计算。理解如何计算和解释三相系统中的千伏安使工程师能够设计和实施强大的电气系统，以满足现代工业的需求。千伏安的另一个关键方面是它与功率因数的关系，功率因数是电功率转化为有用工作输出的有效性度量。功率因数定义为实际功率（以千瓦kW计）与视在功率（以千伏安计）之比。功率因数小于1表示并非所有视在功率都被有效利用，导致系统效率低下。这种关系突显了准确测量和管理千伏安的重要性，以优化能耗并降低运营成本。总之，千伏安的概念在电气工程领域是基础性的。它的重要性在于能够以清晰简洁的方式表示视在功率，使工程师能够评估电气系统和设备的容量。通过理解千伏安的细微差别，专业人士可以确保他们的设计高效、安全，并能够满足当代电气负载的需求。随着技术的不断进步，千伏安的相关性只会增加，使其成为电气工程教育和实践的一个重要组成部分。