What is meant by "emergency power" in elevators?

"Emergency power" in elevators refers to a backup power system that allows the elevator to operate safely in the event of a power outage. This system is critical for ensuring that occupants can exit the elevator safely during emergencies. The backup power typically engages automatically when the primary power supply fails, enabling the elevator to descend to the nearest floor and open its doors, preventing passengers from being trapped.

This function is essential for safety regulations and standards in elevator design, as it minimizes panic and ensures the well-being of users when unexpected power disruptions occur. Emergency power systems are often made up of batteries or generators specifically designed to provide enough power for essential functions.

The other options focus on aspects that do not directly relate to the core purpose of emergency power in elevators. For instance, while maintenance and operation bypasses can be important, they do not address the immediate need for safety during a power failure. Likewise, enhancing speed or external power sources for maintenance do not pertain to the safety protocols needed during emergencies.