dielectric strength

简明释义

绝缘强度

英英释义

例句

1.Electrical engineers often refer to the dielectric strength when designing circuits that operate at high voltages.

电气工程师在设计高电压操作的电路时，经常参考介电强度。

2.The dielectric strength of the material must be tested to ensure it meets industry standards.

必须测试材料的介电强度以确保其符合行业标准。

3.When selecting capacitors, it's essential to consider their dielectric strength to prevent breakdown during operation.

在选择电容器时，考虑它们的介电强度以防止在运行期间发生击穿是至关重要的。

4.The insulation material used in this cable has a high dielectric strength, which ensures safety under high voltage conditions.

这条电缆使用的绝缘材料具有高介电强度，确保在高电压条件下安全。

5.A higher dielectric strength means that the material can withstand greater electric fields without breaking down.

更高的介电强度意味着材料可以承受更大的电场而不发生击穿。

作文

Dielectric materials play a crucial role in the field of electrical engineering and electronics. One of the most important properties of these materials is their dielectric strength, which refers to the maximum electric field that a material can withstand without experiencing breakdown or failure. Understanding dielectric strength is essential for engineers and designers who work with insulating materials in various applications, from capacitors to transformers. This essay will explore the concept of dielectric strength, its significance, and its applications in real-world scenarios.To begin with, dielectric strength is typically measured in volts per unit thickness (V/m or kV/mm) and indicates the ability of a material to act as an insulator under high voltage conditions. When an electric field exceeds the dielectric strength of a material, it can lead to dielectric breakdown, where the material becomes conductive, resulting in short circuits or catastrophic failures. This phenomenon is particularly critical in high-voltage applications, where the integrity of insulating materials is paramount.One of the key factors that influence dielectric strength is the type of material used. Different dielectric materials exhibit varying levels of strength based on their molecular structure and composition. For instance, ceramics and glass generally have higher dielectric strength compared to plastics. This makes them suitable for use in high-voltage insulators and other applications where reliability is essential. Engineers must carefully select materials based on their dielectric strength to ensure safety and efficiency in their designs.Moreover, environmental factors can also affect dielectric strength. Temperature, humidity, and the presence of contaminants can alter the performance of dielectric materials. For example, increased temperature can reduce the dielectric strength of certain materials, making them more susceptible to breakdown. Therefore, it is vital for engineers to consider these factors during the design process to prevent failures in the field.In practical applications, the dielectric strength of a material determines its suitability for various electrical components. For instance, in the manufacturing of capacitors, materials with high dielectric strength are preferred to ensure that the capacitors can operate effectively at high voltages without failing. Similarly, in power transmission systems, insulators with adequate dielectric strength are necessary to prevent electrical arcing and maintain system stability.Testing and measuring dielectric strength is also a critical aspect of quality control in manufacturing. Various standardized tests are conducted to assess the dielectric strength of materials, ensuring they meet the required specifications for their intended applications. These tests help identify potential weaknesses in materials and allow manufacturers to make informed decisions about material selection and processing.In conclusion, dielectric strength is a fundamental property of insulating materials that significantly impacts the performance and safety of electrical systems. By understanding the factors that influence dielectric strength and its implications in real-world applications, engineers can design more reliable and efficient electrical devices. As technology continues to advance, the importance of selecting materials with appropriate dielectric strength will only grow, making this knowledge essential for future innovations in the field of electrical engineering.

电介质材料在电气工程和电子学领域中发挥着至关重要的作用。这些材料最重要的特性之一是它们的介电强度，即材料在不发生击穿或失效的情况下能够承受的最大电场。理解介电强度对于从事各种应用（从电容器到变压器）的工程师和设计师至关重要。本文将探讨介电强度的概念、其重要性及其在现实场景中的应用。首先，介电强度通常以每单位厚度的伏特（V/m或kV/mm）进行测量，表示材料在高电压条件下作为绝缘体的能力。当电场超过材料的介电强度时，可能会导致介电击穿，即材料变得导电，从而导致短路或灾难性故障。这种现象在高电压应用中特别关键，绝缘材料的完整性至关重要。影响介电强度的关键因素之一是所使用的材料类型。不同的电介质材料根据其分子结构和成分表现出不同的强度。例如，陶瓷和玻璃的介电强度通常高于塑料。这使得它们适合用于高电压绝缘体和其他对可靠性要求严格的应用。工程师必须根据材料的介电强度仔细选择材料，以确保其设计的安全性和效率。此外，环境因素也会影响介电强度。温度、湿度和污染物的存在都可能改变电介质材料的性能。例如，温度升高可能降低某些材料的介电强度，使其更容易发生击穿。因此，工程师在设计过程中考虑这些因素以防止现场故障至关重要。在实际应用中，材料的介电强度决定了其在各种电气组件中的适用性。例如，在电容器的制造中，优选具有高介电强度的材料，以确保电容器能够在高电压下有效运行而不会失效。同样，在电力传输系统中，具有足够介电强度的绝缘体是必要的，以防止电弧现象并维持系统的稳定性。测试和测量介电强度也是制造过程中的质量控制关键方面。进行各种标准化测试以评估材料的介电强度，确保其符合预期应用的要求。这些测试有助于识别材料的潜在弱点，并允许制造商就材料选择和加工做出明智的决策。总之，介电强度是绝缘材料的基本属性，对电气系统的性能和安全性有重大影响。通过理解影响介电强度的因素及其在实际应用中的意义，工程师可以设计出更可靠和高效的电气设备。随着技术的不断进步，选择具有适当介电强度的材料的重要性只会增加，使这一知识在电气工程领域未来的创新中变得尤为重要。