Modularization of High - Voltage SwitchgearDue to the miniaturization measures taken for each component and part, as well as the overall miniaturized layout, the size of high - voltage switchgear has been continuously decreasing. There is a wide variety of switchgear combinations, with flexible combination methods and very compact structures. Gas - insulated metal - enclosed switchgear (GIS) encompasses most high - voltage electrical appliances and protective detecting devices, integrating the f