GB 7588-2003 第14.3.1条
| **** | **Emergency operating device**: A **manual barring device** (requiring two persons to operate) shall be provided in the machine room, together with a **brake release wrench**. Hotel elevators shall additionally be equipped with an **emergency electric operation device** (operated inside the car, speed ≤0.3m/s), and this device shall be **independent of the main power supply** (e.g., battery-powered). |