DRUCKENTLASTUNGSEINRICHTUNG FUER GEHAEUSE VON ELEKTRISCHEN SCHALTGERAETEN

摘要

If there are operating interruptions or faults in a switching device, excess pressure occurs, and as a result the pressure relief valve is opened. By this means, a latching device (19, 20, 21, 22) fixes the size of a gap between the cover plate (7) and the sealing plate (3) in the pressure relief direction, which size depends on the highest excess pressure which has occurred so far in the housing of the switchgear. <IMAGE>