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Fu S.-B.,Schneider Electric | Zhao F.,Shaanxi Baoguang Vacuum Electrical Devices Co.
Gaoya Dianqi/High Voltage Apparatus | Year: 2010

The key technology parameters, test standard and perforce of 50 Hz high-voltage circuit breaker applied on 60 Hz power system were analyzed and compared for the need of export. Some Reasonable proposals and measures were introduced for the substitution between the products under different frequency. It was to supply references to the domestic manufacturers on the export business. Source


Liu Z.-Y.,Xian Jiaotong University | Zhang Y.-Y.,Xian Jiaotong University | Lin J.-F.,Shaanxi Baoguang Vacuum Electrical Devices Co. | Jiang W.,Xian Jiaotong University | And 2 more authors.
Gaoya Dianqi/High Voltage Apparatus | Year: 2010

Based on the Slade's critical field theory, we investigate the vacuum insulation characteristics between a pair of contacts in a 126 kV vacuum interrupter. In the case of long vacuum contact gap(60mm) and AC voltage(50 Hz), we obtain the relationship between critical breakdown field strength and contact gap. Source


Zhang R.,Xian High Voltage Apparatus Research Institute | Yan T.,Shaanxi Baoguang Vacuum Electrical Devices Co. | Li Y.,Shaanxi Baoguang Vacuum Electrical Devices Co. | Zhang H.,Shaanxi Baoguang Vacuum Electrical Devices Co. | And 4 more authors.
Gaoya Dianqi/High Voltage Apparatus | Year: 2014

The cracking phenomena of embedded pole appeared in recent years are analyzed. The influencing factors of cracking problem of the cured epoxy resin for embedded pole are discussed by considering some actual cases, such as product structure, epoxy resin formulation, pressure injection process, curing process, injection mold structure, and debugging process. The cracking failure mechanism of epoxy resin injection material is explored and comes to a conclusion that due to the presence of internal stress and defects, the defects and micro-cracks inside the cured epoxy resin would propagate to result in cracking failure when subject to temperature change or external mechanical shock. Further, some preventive measures against cracking problem of the cured epoxy resin for embedded pole are proposed. Source

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