Nearly 160, but leaner and meaner
The safety elevator, as we know it today, was introduced nearly 160 years ago, and the first electric elevator 30 years later. The first patents for escalators were filed in the 1890s.
Escalators are the most convenient way of moving large flows of people continuously in large stores, railway and underground stations and airport halls. Elevators are more efficient at carrying smaller numbers of people on an intermittent basis.
The current generations of elevators and escalators are significantly more energy-efficient than their predecessors. Innovative motors and machine room-less systems in which the motor, controller and other components are placed on top of the cabin, and regenerative braking systems that use the energy recovered when braking or slowing the cabin, help cut elevators’ power consumption.
Escalators can be made more efficient by:
- Mounting sensors that will turn them off when not in use
- Fitting energy-saving soft start systems that cut consumption when the number of people carried is low
- Installing variable frequency drives and sensors to reduce their speed
IEC central to efficient and safe operation
Many IEC TCs (Technical Committees) are involved in the preparation of International Standards that ensure these complex systems work as efficiently and safely as possible. A non-exhaustive list of such TCs and SCs (Subcommittees) includes: