What is the maximum contract speed for Alternating Current elevators?

The maximum contract speed for Alternating Current (AC) elevators in Massachusetts is set at 200 feet per minute (FPM). This speed limit is established to ensure safety and efficiency in elevator operations, addressing factors such as passenger comfort, equipment wear, and adherence to regulatory standards.

Alternating Current elevators, which rely on a type of electrical current that periodically reverses direction, have specific performance criteria defined in state and national codes. The limit of 200 FPM strikes a balance that allows for smooth operation while mitigating risks associated with higher speeds, such as increased stopping distances and potential mechanical failures.

It's critical to follow these specifications closely, as exceeding the maximum speed could lead to unsafe conditions for users and complications in emergency situations. Overall, understanding these speed limits is vital for elevator contractors and engineers for compliance and ensuring safe elevator design and operation.