Stress Analysis of the Support for Double Motion Mechanism Inside 420 kV 63 kA SF6 Interrupter

  • Džanko Hajradinović
  • Mahir MuratovićEmail author
  • Amer Smajkić
Conference paper
Part of the Lecture Notes in Networks and Systems book series (LNNS, volume 59)


Circuit breakers with voltage rating 245 kV and above are usually equipped with double motion mechanism. Double motion mechanism is needed to achieve higher opening speed which is required for withstanding higher transient recovery voltages and at the same time preserving the reliability of the driving mechanism. Double motion mechanism is required to be extremely reliable since any malfunction represents a major failure of the circuit breaker. Special attention needed to be focused on preventing the jamming of the double motion mechanism and releasing of metal particles, since both situations could lead to internal arcing. This paper presents the results of the stress analysis of the double motion mechanism supporting plates for 420 kV 63 kA SF6 circuit breaker. Additionally, the functional and reliability test results of the double motion mechanism are discussed.


SF6 circuit breakers Double motion mechanism Stress analysis Mechanical tests 


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Džanko Hajradinović
    • 1
  • Mahir Muratović
    • 2
    Email author
  • Amer Smajkić
    • 2
  1. 1.Faculty of Mechanical EngineeringUniversity in SarajevoSarajevoBosnia and Herzegovina
  2. 2.EnergoBos ILJIN d.o.o. SarajevoSarajevoBosnia and Herzegovina

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