3.2.In the event of a power cut or failure of components the lift must have devices to prevent free fall or uncontrolled movements of the car.U.K.
The device preventing the free fall of the car must be independent of the means of suspension of the car.
This device must be able to stop the car at its rated load and at the maximum speed anticipated by the installer. Any stop occasioned by this device must not cause deceleration harmful to the occupants whatever the load conditions.