0.4kv系统ggd型低压开关柜大学学位论文.doc

摘要 随着我国经济规模的迅速发展，低压配电系统的容量不断增加，国内许多大型工程项目都需要相适应的大容量、高分断能力的安全可靠的高级型配电装置。 开关柜可广泛用于电力、冶金、纺织、轻工、石油化工、电站、市政工程、民用、商用建筑等领域，用作动力配电，照明配电和无功补偿等。 GGD型开关柜主要适用于发电厂，变电站，厂矿企业等电力用户的交流50Hz、额定工作电压380V，额定工作电流至3150A的配电系统、做为动力，照明及配电设备的电能转换、分配与控制之用。产品具有分断能力高、动热稳定性好，电气方案灵活、组合方便、实用性强，结构新颖，防护等级高等特点。可作为低压成套开关设备的更新换代产品使用。 低压配电柜系列可广泛应用于工厂、车间设备、动力、照明等电气配电，本次设计的开关柜具有如下特点：安全可靠，可设计柜内无裸露带电体，加强对操作人员的安全防护；灵活多变，多种组合方案；美观大方，采用标准化的元器件，具有品味的外观；节省空间，结构紧凑，接线合理等。 关键词：开关柜，GGD，低压，报价系统 Abstract With the rapid development of economies of scale ，capacity of low voltage distribution system increasing，so The domestic many large-scale projects need to adapt to the large capacity and high ability of broken safe advanced type distribution device. The product can be widely used in electric power, metallurgy, textile and light industry, petrochemical, power generation, municipal engineering, civil and commercial buildings and other fields, for power distribution, motor control center, lighting distribution and reactive power compensation, etc. Low ark GGD switch applies to distribution system AC frequency 50Hz,Rated voltage 380V Rated current to 3150A in power plant, substation and corporations such power users, as the power distribution equipment, lighting and the energy conversion, distribution and control. This product has the ability to move, break points of high thermal stability, good electrical solutions agile and convenient, medical, combination of strong practicality, novel structure, protection grade higher characteristic. It can be used as low voltage switchgear equipment renewal product use. Low voltage distribution cabinet series can be widely used in factory workshop equipment, electric power, lighting distribution. This plant has the following features: safe, reliable, and can design ark body, strengthen exposed live without the safety of operators, Flexible, a variety of combination plan, Beautiful generous, standardization of components, taste of appearance, save a space, compact structure, wirin