dielectric strength

简明释义

介质强度

英英释义

例句

1.A higher dielectric strength allows for thinner insulation in electronic devices.

更高的介电强度允许电子设备使用更薄的绝缘层。

2.The insulation material must have a high dielectric strength to prevent electrical breakdown.

绝缘材料必须具有高介电强度以防止电气击穿。

3.The dielectric strength of air is about 3 kV/mm under standard conditions.

在标准条件下，空气的介电强度约为3 kV/mm。

4.In transformers, the dielectric strength of the insulating oil is crucial for safe operation.

在变压器中，绝缘油的介电强度对安全运行至关重要。

5.Testing the dielectric strength of materials helps engineers select suitable insulators.

测试材料的介电强度帮助工程师选择合适的绝缘体。

作文

Dielectric materials play a crucial role in various electrical applications, particularly in capacitors, insulators, and other electronic components. One of the most important properties of these materials is their dielectric strength, which refers to the maximum electric field that a dielectric material can withstand without experiencing breakdown or failure. This property is essential for ensuring the reliability and safety of electrical devices. In this essay, we will explore the concept of dielectric strength, its significance, and its applications in modern technology.To begin with, dielectric strength is defined as the ability of a material to resist electric breakdown when subjected to an electric field. It is usually measured in volts per unit thickness (V/m or kV/mm). The higher the dielectric strength of a material, the more effective it is as an insulator. For example, materials like glass and certain plastics have high dielectric strength values, making them suitable for use in high-voltage applications.One of the key reasons why dielectric strength is vital in electrical engineering is that it helps prevent electrical failures that could lead to short circuits or fires. In power transmission systems, for instance, insulating materials with high dielectric strength are used to separate conductors and protect against arcing. If the dielectric strength of the insulating material is insufficient, the electric field can cause the material to ionize, leading to a breakdown and potentially catastrophic consequences.Moreover, the dielectric strength of a material can be influenced by various factors, including temperature, humidity, and the frequency of the applied electric field. As the temperature increases, the dielectric strength may decrease due to thermal agitation of the molecules within the material. Similarly, high humidity can lead to the absorption of moisture, which can also reduce a material's insulating properties. Therefore, understanding these variables is crucial for engineers when selecting materials for specific applications.In addition to its role in traditional electrical applications, dielectric strength is increasingly important in the development of advanced technologies such as electric vehicles and renewable energy systems. For instance, in electric vehicles, the batteries and power electronics require materials with high dielectric strength to ensure safe and efficient operation. Likewise, in solar panels and wind turbines, the insulation materials must possess excellent dielectric strength to withstand the harsh environmental conditions and high voltages involved.Furthermore, testing the dielectric strength of materials is a critical aspect of quality control in the manufacturing process. Various standardized tests, such as the ASTM D149 test, are conducted to determine the dielectric strength of insulating materials. These tests help manufacturers ensure that their products meet the necessary safety and performance standards before they are deployed in real-world applications.In conclusion, dielectric strength is a fundamental property of insulating materials that plays a significant role in the safety and efficiency of electrical systems. Understanding this property allows engineers to select appropriate materials for various applications, ultimately contributing to the advancement of technology. As we continue to innovate and develop new electrical devices, the importance of dielectric strength will only grow, highlighting the need for ongoing research and development in this field.

介电材料在各种电气应用中发挥着至关重要的作用，特别是在电容器、绝缘体和其他电子元件中。这些材料最重要的特性之一是它们的介电强度，指的是介电材料在不发生击穿或失效的情况下所能承受的最大电场。这个特性对于确保电气设备的可靠性和安全性至关重要。在这篇文章中，我们将探讨介电强度的概念、其重要性以及在现代技术中的应用。首先，介电强度被定义为材料在施加电场时抵抗电击穿的能力。它通常以每单位厚度的伏特（V/m或kV/mm）来测量。材料的介电强度越高，作为绝缘体的效果就越好。例如，玻璃和某些塑料具有高介电强度值，使其适合用于高电压应用。介电强度在电气工程中之所以至关重要，是因为它有助于防止可能导致短路或火灾的电气故障。在电力传输系统中，例如，使用具有高介电强度的绝缘材料来隔离导体并防止电弧。如果绝缘材料的介电强度不足，电场可能会导致材料电离，从而导致击穿，可能引发灾难性后果。此外，材料的介电强度可能受到多种因素的影响，包括温度、湿度和施加电场的频率。随着温度的升高，介电强度可能会由于材料内部分子的热运动而降低。类似地，高湿度可能导致水分的吸收，这也会降低材料的绝缘性能。因此，了解这些变量对于工程师在选择特定应用材料时至关重要。除了在传统电气应用中的作用外，介电强度在电动汽车和可再生能源系统等先进技术的发展中越来越重要。例如，在电动汽车中，电池和功率电子设备需要具有高介电强度的材料，以确保安全和高效的运行。同样，在太阳能电池板和风力涡轮机中，绝缘材料必须具备优良的介电强度，以承受所涉及的恶劣环境条件和高电压。此外，测试材料的介电强度是制造过程中质量控制的关键方面。进行各种标准化测试，例如ASTM D149测试，以确定绝缘材料的介电强度。这些测试帮助制造商确保其产品在实际应用中符合必要的安全和性能标准。总之，介电强度是绝缘材料的一项基本属性，在电气系统的安全性和效率中发挥着重要作用。理解这一特性使工程师能够为各种应用选择合适的材料，最终促进技术的进步。随着我们不断创新和开发新的电气设备，介电强度的重要性将只会增加，突显出该领域持续研究和发展的必要性。