Device for pressure-release of gas-insulated apparatus

摘要

There are provided an aperture (2) provided in a box (1) that accommodates electrical equipment such as a circuit breaker; a pressure-release plate (3) that blocks the aperture (2); an O-ring (7) provided between the pressure-release plate (3) and the box so as to surround the aperture (2); and a plurality of restraining plates (6) whereof one edge contacts the peripheral section of the pressure-release plate (3) and the other edge is fixed to the box (1) by a bolt (5b).