推荐回答(3个)
摘要
在工厂供电中,必须特别要注意电气安全,如果稍有麻痹或疏忽,就可能造成严重的人身触电事故,或者引起火灾或爆炸,给国家和人民带来极大的损失。所以过电流保护在工厂供电系统中作用就显得尤为的重要,因为过电流保护器具有过载,短路,过压,欠压,断相,电流不平衡等保护功能,还能对类型三相电动机等用电设备起快速,可靠的保护.过电流保护器还具有结构简单,使用方便,价格低廉,而且无功耗,寿命长,体积小的特点。本论文主要讲述了几种过电流保护器(熔断器、低压断路器、保护继电器)的作用,在低压供电系统中的配置与选型。在本厂所起的作用以及存在的问题。并针对存在的问题进行分析研究提出解决方法。
Abstract
Power supply in the factory, it is essential with particular attention to electrical safety, if a slight numbness or negligence, it may cause serious electric shock personal accident, fire or explosion or to the country and the people a great loss. Therefore, over-current protection in the role of the factory power supply system is particularly important because over-current device with overload protection, short circuit, overvoltage, undervoltage, phase fault current imbalance protection, but also on the type of three-phase motor from electrical equipment, such as fast, reliable protection. overcurrent protection device also has a simple structure, easy to use, inexpensive, and no power consumption, long life, small size characteristics. This paper focuses on a number of over-current protection devices (fuses, low-voltage circuit breakers, protective relay) role in the low-voltage power supply system configuration and selection. In the factory, as well as the role of the existing problems. And for the analysis of problems in the study solution.
Power supply in the factory, it is essential with particular attention to electrical safety, if a slight numbness or negligence, it may cause serious electric shock personal accident, fire or explosion or to the country and the people a great loss. Therefore, over-current protection in the role of the factory power supply system is particularly important because over-current device with overload protection, short circuit, overvoltage, undervoltage, phase fault current imbalance protection, but also on the type of three-phase motor from electrical equipment, such as fast, reliable protection. overcurrent protection device also has a simple structure, easy to use, inexpensive, and no power consumption, long life, small size characteristics. This paper focuses on a number of over-current protection devices (fuses, low-voltage circuit breakers, protective relay) role in the low-voltage power supply system configuration and selection. In the factory, as well as the role of the existing problems. And for the analysis of problems in the study solution. 哎~~~
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