| 摘要 |
PURPOSE:To brighten the circumference of a distribution board and enable the restoration to be operated safely and easily by allowing a lamp to illuminate when the main breaker in the distribution board is shut down due to an excess current and all the interior lighting is turned off. CONSTITUTION:A battery 4 and an emergency lamp 6 which is turned on by the power from the battery 4 are incorporated in the case 2 of a distribution board 1. The battery 4 is connected to a power source through a switch 5 when a main breaker 3 is ON, and is charged. The emergency lamp 6 is connected to the battery 4 through the switch 5 when the main breaker is OFF, and is turned on by the power form the battery 4 in order to illuminate the lower part of the distribution board 1 close to the operator's feet, the operation unit of the main breaker 3, and others. |
