kilovolt ampere

简明释义

千伏安

英英释义

例句

1.We need to upgrade the transformer to handle 1000 kilovolt ampere.

我们需要升级变压器，以处理1000千伏安。

2.The power supply for the factory is rated at 200 kilovolt ampere.

工厂的电源额定为200千伏安。

3.A typical residential installation may require around 5 kilovolt ampere.

一个典型的住宅安装可能需要大约5千伏安。

4.The generator has a capacity of 500 kilovolt ampere.

该发电机的容量为500千伏安。

5.This solar inverter can output up to 15 kilovolt ampere.

这个太阳能逆变器的输出可以达到15千伏安。

作文

In the world of electrical engineering, understanding power ratings is crucial for ensuring the efficiency and safety of various systems. One such important term is kilovolt ampere, which is often abbreviated as kVA. The kilovolt ampere is a unit that measures apparent power in an electrical system. Unlike real power, measured in watts (W), apparent power takes into account both the voltage and the current flowing through a circuit. This distinction is essential because it helps engineers and technicians design systems that can handle the necessary load without overheating or failing.To understand the significance of kilovolt ampere, we must first grasp the concept of apparent power. Apparent power is the product of the root mean square (RMS) voltage and RMS current in a circuit. It provides a comprehensive view of how much power is being supplied to the system, regardless of whether that power is being converted into useful work or not. For instance, if you have a generator rated at 100 kVA, it means that it can supply 100,000 volt-amperes of apparent power. This rating is particularly important when sizing transformers and generators, ensuring they can handle the expected load without risk of damage.The relationship between kilovolt ampere and other units of power becomes clearer when we consider the power factor, which is the ratio of real power to apparent power. In many industrial applications, the power factor can be less than one due to inductive loads, such as motors and transformers. This means that not all the apparent power is being converted into usable work, and some of it is lost as reactive power. Therefore, understanding the kilovolt ampere rating allows engineers to account for these losses and design more efficient systems.Moreover, the use of kilovolt ampere is prevalent in various applications, including power distribution, data centers, and renewable energy systems. For example, in a data center, knowing the kVA rating of a backup generator is critical to ensure that it can support the entire load during a power outage. Similarly, in renewable energy systems, such as solar power installations, the kVA rating helps in determining how much energy can be fed back into the grid.In conclusion, the term kilovolt ampere plays a vital role in the field of electrical engineering. It provides a clear understanding of the apparent power in a system, allowing for effective design and implementation of electrical equipment. As technology continues to advance and the demand for efficient power solutions grows, the importance of comprehending units like kilovolt ampere will only increase. By mastering this concept, engineers can contribute significantly to the development of sustainable and reliable electrical systems that meet the needs of modern society.

在电气工程的世界中，理解功率评级对于确保各种系统的效率和安全至关重要。其中一个重要的术语是千伏安，通常缩写为kVA。千伏安是一个测量电气系统中表观功率的单位。与以瓦特（W）为单位测量的实际功率不同，表观功率考虑了电路中流动的电压和电流。这一区别至关重要，因为它帮助工程师和技术人员设计能够处理必要负载而不会过热或故障的系统。要理解千伏安的重要性，我们首先必须掌握表观功率的概念。表观功率是电路中均方根（RMS）电压和均方根电流的乘积。它提供了对系统供电多少的全面视图，无论这些电力是否被转化为有用的工作。例如，如果您有一台额定为100 kVA的发电机，这意味着它可以提供100,000伏安的表观功率。这个评级在选择变压器和发电机时尤其重要，以确保它们能够承受预期的负载而不冒损坏的风险。当我们考虑功率因数时，千伏安与其他功率单位之间的关系变得更加清晰。功率因数是实际功率与表观功率的比率。在许多工业应用中，由于感性负载（如电动机和变压器），功率因数可能小于1。这意味着并非所有的表观功率都被转化为可用的工作，其中一部分作为无功功率损失。因此，了解千伏安评级使工程师能够考虑这些损失并设计出更高效的系统。此外，千伏安的使用在各种应用中普遍存在，包括电力分配、数据中心和可再生能源系统。例如，在数据中心，了解备用发电机的kVA评级对于确保其在停电期间能够支持整个负载至关重要。同样，在可再生能源系统中，如太阳能发电装置，kVA评级有助于确定可以反馈到电网的能源量。总之，术语千伏安在电气工程领域发挥着至关重要的作用。它清楚地理解系统中的表观功率，从而允许有效设计和实施电气设备。随着技术的不断进步和对高效电力解决方案需求的增加，理解像千伏安这样的单位的重要性只会增加。通过掌握这一概念，工程师可以为开发满足现代社会需求的可持续和可靠的电气系统做出重大贡献。