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80年代是科学技术蓬勃发展的年代,电技术应用日益广泛。在工业和民用建筑中,几乎所有的工业设备和通信设备都已经电气化,办公设备及家用器具也在朝电气化方向发展。这些用电设备的供电、配电、保护和控制等用的电气装置,如变压器、开关等都趋向于紧凑化、低损耗、高强度绝缘,有些还要求有防火、抗干扰、全天候等性能。再加上数据传输技术和微电子技术的采用,自动化程度不断提高,新的电气装置不断涌现,在安装方面有着更高的要求。同时由于建筑电气系统安装容量日益增加,电压和电流的应用范围也在逐步扩大:电压从微伏级到数十万伏级,电流从微安级到数万安级,既有高电压、大电流的电力线路,也有微电压、微电流的电子和通信线路,增加了电气安装的复杂性,要求有高的安装技术。为了能使各类用电设备都能
The 80s was an era when science and technology flourished, and the application of electrical technology became increasingly widespread. In industrial and civil buildings, almost all industrial equipment and communication equipment have been electrified, and office equipment and home appliances have also been developed towards electrification. Electrical devices such as transformers, switches, and the like used for power supply, distribution, protection, and control of these electrical equipment tend to be compact, low-loss, and high-intensity insulation, and some require fire, anti-jamming, and all-weather performance. Coupled with the adoption of data transmission technology and microelectronics technology, the degree of automation continues to increase, new electrical devices continue to emerge, and there are higher requirements for installation. At the same time, due to the increasing installation capacity of building electrical systems, the application range of voltage and current is also gradually expanding: the voltage ranges from microvolts to several hundred thousand volts, currents range from microamps to tens of thousands of amps, and both high voltage and large Current power lines, as well as micro-voltage, micro-current electronic and communication lines, increase the complexity of electrical installations and require high installation technology. In order to enable all kinds of electrical equipment