Simulation and Design of a Safety Connection Device for the Cable T-Joint Withstand Voltage Testing
During the cable withstand voltage test,the test voltage is close to or exceeds the withstand voltage value of the electrical and mechanical parameters of the cable accessory material,which causes leakage and creepage a-long the surface of the accessories and cable body,and then leads to other defects and hidden dangers,resulting in failure to implement according to the regulations,and will damage the test and tested equipment in serious ca-ses.According to the parameters of the cable accessories,as well as the maximum test voltage and time required by the regulations,through the theoretical simulation calculation of the device withstand insulation and its field strength,this paper preliminarily determines the insulation transition coordination mode and electrical parameters of the safety connection device and the cable accessories,and designs a safety connection device for voltage withstand detection of cable T joints(including elbows).Finally,the test results show that the safety connection device can ef-fectively and safely realize the withstand voltage test of cables.
cablet-jointwithstand voltage testingsafety connection device
万方数据
维普
