In comparison to hydraulic elevators, what do traction elevators require more of for operation?

Traction elevators require more contactors and power for operation compared to hydraulic elevators due to the way they function. Traction elevators operate using a system of pulleys and cables, which involves electric motors that drive the movement of the elevator car. These motors require a substantial amount of electrical energy to overcome the weight of the car and the passenger load, ensuring smooth and efficient movement.

The increased number of contactors relates to the broader and more intricate set of control systems needed for traction elevators, which manage the speed, direction, and leveling of the elevator car accurately. Such systems can include multiple sensors, relays, and contactors that help ensure the elevator operates safely and efficiently at varying speeds and loads.

Additionally, while traction elevators do need more power and electrical components for operation, hydraulic elevators are typically simpler, relying on hydraulic fluid to move the elevator car, which requires less reliance on extensive electrical systems. This creates a distinction where traction elevators stand out with their need for enhanced electrical infrastructure, emphasizing the role of contactors and power usage in their design and operation.