Device for limiting the pressure inside a tank housing an electrical protection apparatus, and electrical protection apparatus comprising such a device.

摘要

The device has a membrane (4) creating a passage through a wall of an envelope of a tank, made of metal or epoxy, under the effects of increase in pressure. The membrane is formed in ellipsoidal shape, where the membrane presents a ratio between large bending radius (R1) and small bending radius (R2) of the membrane in the range of 1.2 and 1.8, for obtaining two break points (A, B) corresponding to two maximum constraint points of the membrane and for obtaining gradual decreasing distribution of constraints along the ellipsoidal shape of the membrane.