What is the maximum speed for an instantaneous type of elevator safety device?

The maximum speed for an instantaneous type of elevator safety device is established at 125 feet per minute. This regulation is in place to ensure the safety and reliability of elevator systems during operation. Instantaneous safety devices are designed to respond quickly to prevent accidents, and the specified speed limit helps guarantee that these devices can effectively engage before an elevator could reach potentially dangerous speeds.

At speeds above this threshold, the performance and functioning of the safety device may not be reliable, which could potentially lead to hazardous situations. Therefore, the regulation set at 125 feet per minute represents a balance between operational efficiency and safety for passengers and equipment.