Title :
Peculiarities of the switching performance of two 24 kV-vacuum interrupters in series
Author :
Fugel, Thorsten ; Koenig, Dieter
Author_Institution :
High Voltage Lab., Darmstadt Univ. of Technol., Germany
Abstract :
The breaking capability of two vacuum interrupters in series and their behaviour with added grading capacitors has already been reported in preliminary publications. In the first part of this paper, the breaking capability of the series arrangement in dependency of arcing time, recovery voltage and test current is compared with the performance of a single tube. Within these investigations the influence of the test current on the breaking capability of the double arrangement is shown. The second part of the work deals with the performance of the series arrangement during the re-ignition of one of the tubes. Tests with simultaneous openings of the contacts are presented which demonstrate that even one of the two tubes is able to withstand the total TRV in case of re-ignition of the other tube. Immediately after arc-extinguishing the previous re-ignited tube is able to recover and to take its part of the total TRV again. As a result the double arrangement is able to interrupt the test current
Keywords :
circuit-breaking arcs; switchgear testing; switching; vacuum circuit breakers; vacuum interrupters; 24 kV; arc re-ignition; arc-extinguishing; arcing time; breaking capability; grading capacitors; recovery voltage; series connection; simultaneous contact opening; switching performance peculiarities; test current interruption; vacuum interrupters; Capacitors; Circuit testing; Dielectrics and electrical insulation; Insulation testing; Interrupters; RLC circuits; Switches; Vacuum arcs; Vacuum technology; Voltage;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2000. Proceedings. ISDEIV. XIXth International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5791-4
DOI :
10.1109/DEIV.2000.879014
