neutral over-current relay

简明释义

中性过电流继电器

英英释义

例句

1.The neutral over-current relay helps to prevent damage caused by excessive current in the neutral conductor.

为了防止中性导体中过量电流造成的损坏，中性过电流继电器起到了重要作用。

2.We need to reset the neutral over-current relay after the power outage.

在停电后，我们需要重置中性过电流继电器。

3.The installation of the neutral over-current relay is crucial for protecting transformers from faults.

安装中性过电流继电器对于保护变压器免受故障至关重要。

4.In our new design, the neutral over-current relay will enhance the overall safety of the electrical system.

在我们的新设计中，中性过电流继电器将增强电气系统的整体安全性。

5.During the system check, we found that the neutral over-current relay was malfunctioning.

在系统检查中，我们发现中性过电流继电器出现了故障。

作文

In the realm of electrical engineering, protective devices play a crucial role in ensuring the safety and reliability of power systems. One such device is the neutral over-current relay, which is essential for protecting electrical circuits from overload conditions. Understanding the function and significance of this relay can help engineers design safer and more efficient electrical systems.The primary purpose of a neutral over-current relay is to detect excessive current flowing through the neutral conductor of a three-phase system. When the current exceeds a predetermined threshold, the relay activates, signaling the need to disconnect the affected circuit. This is particularly important in preventing damage to electrical equipment and reducing the risk of fire hazards due to overheating.In many industrial applications, three-phase systems are common. Each phase carries a certain amount of current, and ideally, the sum of these currents should equal zero when balanced. However, in cases of faults, such as phase-to-ground or phase-to-phase short circuits, the current may become unbalanced. The neutral over-current relay is designed to monitor this imbalance by measuring the current flowing through the neutral wire. If the relay detects that the neutral current exceeds its set value, it will trigger an alarm or trip the circuit breaker.The installation of a neutral over-current relay is often part of a comprehensive protection scheme. It works in conjunction with other protective devices, such as phase over-current relays and earth fault relays, to provide a layered defense against various electrical faults. By integrating these devices, engineers can create a robust protection system that enhances the overall reliability of the power distribution network.Moreover, the settings of a neutral over-current relay can be adjusted based on the specific requirements of the electrical system it serves. Factors such as the type of load, the characteristics of the supply system, and the nature of potential faults must be considered when configuring the relay. This flexibility allows for tailored protection schemes that can adapt to different operational conditions.In conclusion, the neutral over-current relay is an indispensable component in modern electrical systems. Its ability to detect and respond to over-current conditions in the neutral conductor helps safeguard equipment and maintain system integrity. As technology continues to evolve, the importance of such protective devices cannot be overstated. Engineers must remain vigilant in their understanding and application of relays like the neutral over-current relay to ensure the safe operation of electrical networks.In summary, a neutral over-current relay (中性过电流继电器) is critical for monitoring the current in the neutral wire of a three-phase system, preventing overloads, and ensuring the safety of electrical installations. Proper implementation and configuration of this relay contribute significantly to the reliability and efficiency of power systems.

在电气工程领域，保护设备在确保电力系统的安全性和可靠性方面发挥着至关重要的作用。其中一种设备是中性过电流继电器，它对于保护电路免受过载条件至关重要。理解该继电器的功能和重要性可以帮助工程师设计更安全、更高效的电气系统。中性过电流继电器的主要目的是检测三相系统中流经中性导体的过量电流。当电流超过预定的阈值时，继电器会激活，发出需要断开受影响电路的信号。这在防止电气设备损坏和减少由于过热引起的火灾风险方面尤为重要。在许多工业应用中，三相系统是常见的。每个相都携带一定量的电流，理想情况下，这些电流的总和在平衡时应等于零。然而，在故障情况下，例如相对地或相对相短路，电流可能会失去平衡。中性过电流继电器旨在通过测量流经中性线的电流来监控这种不平衡。如果继电器检测到中性电流超过其设定值，它将触发报警或跳闸电路断路器。中性过电流继电器的安装通常是全面保护方案的一部分。它与其他保护设备（如相过电流继电器和接地故障继电器）协同工作，为各种电气故障提供分层防护。通过集成这些设备，工程师可以创建一个强大的保护系统，从而增强电力分配网络的整体可靠性。此外，中性过电流继电器的设置可以根据其服务的电气系统的具体要求进行调整。负载类型、供电系统的特性以及潜在故障的性质等因素在配置继电器时必须考虑。这种灵活性允许根据不同的操作条件量身定制保护方案。总之，中性过电流继电器是现代电气系统中不可或缺的组件。它检测并响应中性导体中的过电流条件，有助于保护设备并保持系统完整性。随着技术的不断发展，这类保护设备的重要性不容小觑。工程师必须在理解和应用像中性过电流继电器这样的继电器方面保持警惕，以确保电力网络的安全运行。总之，中性过电流继电器（中性过电流继电器）对于监测三相系统中中性线的电流、防止过载以及确保电气安装的安全至关重要。该继电器的正确实施和配置显著有助于电力系统的可靠性和效率。