Earthing switches (short-circuiter) type QZR with short-circuit making capacity are operationally easy switching devices used indoors in high voltage substations or in switchgear cabinets. The earthing switch is with instantaneous movement of the main contacts to the on position, which provides guaranteed making capacity. They can be used as a safety device in the input fields HV switchgear.
Rated voltage: 1 – 25 kV
Rated shorttime current 1s (3s): 16 – 100 kA
Rated dynamic current: 40 – 250 kA
Rated frequency: 50 Hz (16 Hz, 60 Hz)
Mechanical endurance: 2000, 5000, 10000 C-O
Minimum lifetime (years): 40
Electric class endurance: E1, E2, E+
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)
360 Model
