690v1250a控制与保护开关的设计与研究毕业论文.doc

690V1250A控制与保护开关的设计与研究 690V/1250A控制与保护开关的设计与研究 摘 要 控制与保护开关作为传统电器组合的代替品有着非常优越的性能。传统电机控制中，对一台电机往往需要接触器、断路器、热继电器等电器组合从而达到控制与保护电机的目的。控制与保护开关将电机控制保护中常用的功能在一个电器上实现，从而使电器整体体积减小，同时可靠性得到提高。 本文课题主要是研制了690V/1250A控制和保护开关电器(简称CPS)，它是集接触器、断路器以及保护继电器等元件为一体的模块组合式开关电器。相对于传统的分离元件配套的成套装置来说， CPS有着可靠性高、功能全、体积小、特性之间自行协调配合等优势。对此加以推广应用，能够使控制系统得到很大程度的简化，而且又能使设备体积得到缩小，尤其适用于要求高分断能力的集中配电与控制的场合以及抽屉式开关柜等。它采用??的原理和先进的电子技术以及信息技术，突破传统的电控系统分立元件串联组合的配置方式和模块式集成组合的配置方式，在单一电磁结构的电器上集成了断路器、接触器、热继电器、起动器、汁数器及电流显示等多种功能。 关键词：控制与保护开关电器；低压电器；模块式；触头系统 Abstract Control and protective switching as an alternative to traditional electrical combination has a very superior performance. Often require traditional motor control, motor contactors, circuit breakers, thermal relays and other electrical appliances portfolio so as to achieve the purpose of motor control and protection. Control and protective switching motor control protection function in an electrical, which is electrical overall volume is reduced, while reliability is improved. This topic mainly developed a 690 V/ 1250A control and protection switch electric circuit breaker is set. The main functions of the elements such as protective relay and contactor for the integration of a module combination switch electric appliances with the traditional separation of component matching in order to achieve a specific goal of complete sets of equipment control and protection, control and protection switch electrical appliances (CPS) has small volume, complete functions, high reliability, various features in the in-house well coordination, etc. Application of this new type of electric appliance not only can greatly simplify control system, at the same time can greatly reduce the volume of the complete sets of equipment, especially suitable for the requirement of high breaking capacity focus on power distribution and control occasions and draw-out type switchgear etc. It adopts a new principle and the advanced electronic technology and information technology, break th