Indoor disconnectors, loadbreak and earthing switches

Indoor disconnectors QAK, QAKZ

This switching device is used for the switching of no-load circuits in the MV switchgears cabinets or in MV switching stations. The disconnector drives can be either of electric motor or hand operated type, with manual actuation of the electrical drives. The QAKZ marking denotes the QAK disconnectors, completed with an earthing switch. 

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    Technical information

  • Rated voltage
    1 – 123 kV
  • Rated current
    100 – 8000 A (for higher current use disconnector type QAS)
  • Rated shorttime current 1s (3s)
    16 – 120 kA
  • Rated dynamic current
    40 – 300 kA
  • Rated frequency
    50 Hz (16 Hz, 60 Hz)
  • Mechanical endurance
    2000, 5000, 10000 (60000) C-O
  • Minimum lifetime (years)
    40
  • Drive type
    Hand drive, Hand drive via gearbox, motor drive
  • Motor type
    12V DC, 24V DC, 48V DC, 60V DC, 110V DC, 220V DC, 230V AC, 400V AC
  • Signaling positions
    Limit switches per position, placed direct on main device shaft, Auxiliary cam-switch (high switch capacity)
  • Insulators type
    Epoxy resin, porcelain (upon request)

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