| 摘要 |
PROBLEM TO BE SOLVED: To enable detaching an exhaust part cover when the clearance to a ceiling is small, by detachablly fixing the exhaust part cover on a distribution board from outside, covering accessary components in the upper part of the distribution board, and constituting the exhaust part cover of a fixed part and a movable part. SOLUTION: An exhaust part cover covering an externally attached apparatus of a distribution board 11 is divided into a fixed cover 1 and a movable cover 2. When the exhaust part cover is detached, machine screws 21 of the movable cover 2 are unfastened, and the movable cover 2 is pulled out. A metal fixture positioning the movable cover 2 is arranged in the aperture part of the fixed cover 1, and the movable cover 2 can be smoothly assembled. The supper part of the movable cover 2 is in contact with the fixed cover 1, and forms a closed space to accessory components on the distribution board 11 together with the fixed cover 1 and the distribution board 11. As a result, the movable cover 2 can be pulled out to the front side and detached when the clearance to a ceiling is small, and work in high buildings or facilities is safely enabled. |
