permissible current

简明释义

容许电流

英英释义

例句

1.If the load exceeds the permissible current 允许电流, it could cause overheating.

如果负载超过了允许电流 permissible current，可能会导致过热。

2.Before installation, we need to check the permissible current 允许电流 rating of the wires.

在安装之前，我们需要检查电线的允许电流 permissible current额定值。

3.The technician noted that the permissible current 允许电流 for this transformer is 100 amps.

技术人员注意到这个变压器的允许电流 permissible current是100安培。

4.In order to prevent damage, always respect the permissible current 允许电流 limits specified by the manufacturer.

为了防止损坏，请始终遵守制造商指定的允许电流 permissible current限制。

5.The electrical engineer calculated the permissible current 允许电流 for the circuit to ensure safety.

电气工程师计算了电路的允许电流 permissible current以确保安全。

作文

In the field of electrical engineering, understanding the concept of permissible current is crucial for ensuring the safety and efficiency of electrical systems. The term permissible current refers to the maximum amount of electric current that can flow through a conductor or circuit without causing damage or overheating. This concept is essential for engineers and technicians who design and maintain electrical systems, as exceeding the permissible current can lead to catastrophic failures, fires, or even fatalities.To comprehend why permissible current is so important, one must consider the properties of materials used in electrical wiring. Different materials have varying resistances and thermal conductivities, which directly affect how much current they can handle safely. For instance, copper is widely used in electrical applications due to its excellent conductivity and relatively high permissible current. However, if the current flowing through a copper wire exceeds its permissible current, the wire will heat up substantially. This heating can cause insulation to melt, creating short circuits and potentially igniting surrounding materials.The determination of permissible current involves various factors, including the wire's cross-sectional area, insulation type, ambient temperature, and installation conditions. Engineers use standardized tables and formulas to calculate the permissible current for different types of wires and cables under specific conditions. For example, a thicker wire can carry more current than a thinner one due to its lower resistance. Similarly, wires installed in cooler environments can typically handle higher currents than those in warmer settings.In practical applications, the concept of permissible current plays a vital role in circuit design. When designing an electrical system, engineers must ensure that all components can handle the expected load without exceeding their permissible current. This includes selecting appropriate wire gauges, circuit breakers, and other protective devices. Circuit breakers are particularly important because they automatically interrupt the flow of electricity when the current exceeds a predetermined limit, thus preventing potential hazards.Moreover, understanding permissible current is not only vital for electrical engineers but also for anyone involved in DIY electrical projects. Homeowners and hobbyists must be aware of the permissible current ratings for various appliances and fixtures to avoid overloading circuits. Overloading can lead to tripped breakers, damaged equipment, and even electrical fires.In conclusion, the concept of permissible current is fundamental in the realm of electrical engineering and safety. It encompasses the maximum current that can safely flow through conductors without causing damage. By adhering to the guidelines associated with permissible current, engineers and technicians can design safer, more efficient electrical systems that minimize risks to both people and property. As technology advances and our reliance on electricity increases, the importance of understanding permissible current will continue to grow, making it an essential topic for anyone working in or around electrical systems.

在电气工程领域，理解允许电流的概念对于确保电气系统的安全和效率至关重要。术语允许电流指的是可以通过导体或电路而不会导致损坏或过热的最大电流。这一概念对于设计和维护电气系统的工程师和技术人员而言至关重要，因为超过允许电流可能导致灾难性故障、火灾甚至死亡。要理解为什么允许电流如此重要，必须考虑用于电气布线的材料特性。不同材料具有不同的电阻和热导率，这直接影响它们能够安全处理多少电流。例如，铜因其优良的导电性和相对较高的允许电流而广泛应用于电气领域。然而，如果流经铜线的电流超过其允许电流，则该电线将显著升温。这种加热可能导致绝缘材料熔化，从而产生短路，并可能点燃周围材料。允许电流的确定涉及多个因素，包括电线的横截面积、绝缘类型、环境温度和安装条件。工程师使用标准化表格和公式来计算在特定条件下不同类型电缆的允许电流。例如，较厚的电线可以承载比较细的电线更多的电流，因为其电阻较低。同样，在较凉的环境中安装的电线通常可以处理比在较温暖环境中更高的电流。在实际应用中，允许电流的概念在电路设计中发挥着至关重要的作用。在设计电气系统时，工程师必须确保所有组件都能处理预期负荷而不超过其允许电流。这包括选择适当的电线规格、断路器和其他保护装置。断路器尤其重要，因为它们会在电流超过预设限制时自动中断电流，从而防止潜在的危险。此外，了解允许电流不仅对电气工程师至关重要，对任何参与DIY电气项目的人来说也同样重要。房主和爱好者必须了解各种电器和灯具的允许电流额定值，以避免电路过载。过载可能导致断路器跳闸、设备损坏甚至电气火灾。总之，允许电流的概念在电气工程和安全领域是基础性的。它涵盖了可以安全流过导体而不会造成损害的最大电流。通过遵循与允许电流相关的指导方针，工程师和技术人员可以设计出更安全、更高效的电气系统，从而将对人和财产的风险降到最低。随着科技的进步和我们对电力的依赖增加，理解允许电流的重要性将继续增长，使其成为任何在电气系统中工作或接触的人必不可少的主题。