LIU Zhi-yuan. Vacuum Insulation Characteristics with Long Contact Gaps between High Voltage Vacuum Interrupter Contacts[J]. High voltageapparatus, 2009, 45(2): 66-69.
LIU Zhi-yuan. Vacuum Insulation Characteristics with Long Contact Gaps between High Voltage Vacuum Interrupter Contacts[J]. High voltageapparatus, 2009, 45(2): 66-69.DOI:
The vacuum insulation characteristics of a long gap(no less than 40 mm) between two contacts in high voltage vacuum interrupters(VIs) are discussed
including the relationship between breakdown voltage(DC voltage
power frequency voltage and lightning impulse voltage) and contact gap
and the conditioning characteristics of long contact gaps in vacuum.The vacuum insulation characteristics of the long gaps with the size of no less than 40 mm in 72/84 kV VIs are hence understood to a certain extent.However
the vacuum insulation characteristics of the long gaps with the size of no less than 60 mm in 126 kV single break VIs still need further investigating.