all aerial lifts must have an APU spec'd to start, run and control 110% of the rated lift capacity and must be wired into the e-stop circuit. minimum line speed is 100fpm, concurrently all carriers must be unloaded of passengers within an hour. the designer may specify that a secondary "prime mover" be installed, typically diesel, to save elec costs during peak elec consumption periods. in this scenario, the electric motor acts as the APU.
many larger, critical lifts have an electric prime mover, a diesel secondary mover, another small diesel smaller for the evac drive. if you see ski-lifts still operating during a power failure, they're on the secondary diesel drive, with a smaller diesel acting as an the evac drive. stratton gondola has this system, as does K1 gondola at the K.
ps: am not certain that the evac motor on the red is diesel.
many larger, critical lifts have an electric prime mover, a diesel secondary mover, another small diesel smaller for the evac drive. if you see ski-lifts still operating during a power failure, they're on the secondary diesel drive, with a smaller diesel acting as an the evac drive. stratton gondola has this system, as does K1 gondola at the K.
ps: am not certain that the evac motor on the red is diesel.
Last edited: