Sponsored
Sponsored
Machines, Motors and Pumps
Electric-Motors-for-Elevators

Electric Motors for Elevators

By David Herres | February 1, 2013

The first motors operated on DC. In fact, the invention of a practical DC motor long preceded Nikola Tesla’s insight that AC would offer substantial benefits. Thomas Edison and his associates clung to the idea that DC was more practical, but history favored Tesla and George Westinghouse, at least in regard to the war of…

Read More

A Load & Temperature Compensation Method for Green Hydraulic Lifts by Means of Inverters

By Elevator World | February 1, 2013

This paper was presented at USA 2012, the ­International Congress on Vertical Transportation ­Technologies and first published in IAEE book Elevator Technology 19, edited by A. Lustig. It is a reprint with ­permission from the International Association of ­Elevator Engineers (website: www.elevcon.com). This paper is an exact reprint and has not been edited by ELEVATOR…

Read More
The-Street-Called-Asansor-and-Water-Powered-Elevator-Installation-in-Izmir

The Street Called “Asansör” and Water-Powered Elevator Installation in Izmir

By Ersan Barlas, C. Erdem Imrak, Eren Kayaoglu, Adem Candas and Yusuf Z. Kocabal | February 1, 2013

by Ersan Barlas, C. Erdem Imrak, Eren Kayaoglu, Adem Candas and Yusuf Z. Kocabal Abstract Asansör (which means elevator in Turkish) is a 1907 built building in Izmir’s Karatas quarter, within the boundaries of the metropolitan district of Konak. The old Asansör quarter, filled with old restored houses is also known as the Jewish quarter…

Read More
A-Forum-on-Elevator-Drive-Safety

More Responsibility for Passenger Safety: A Forum on Elevator Drive Safety

By Elevator World | March 1, 2012

In November 2011, experts from the Chinese elevator industry attended a seminar hosted by Torin Drive, a provider of elevator traction machines. On November 7, 2011, around 70 experts from the Chinese elevator industry gathered in Changshu, China, at the Changshu International Hotel to attend a seminar hosted by Torin Drive, a provider of elevator…

Read More
Elevator-World---Fallback-Image

Lockout/Tagout Can Be Required More Than You Think

By Elevator World | March 1, 2012

A look at a fundamental safety rule service mechanics must consider when working on elevator equipment: the control of hazardous energy, more commonly known as lockout/tagout procedures. Given that this issue focuses on machines, motors and pumps, it is fitting to look at one of the most fundamental safety rules any service mechanic must consider…

Read More
Steam-Powered-Elevator-Engines

Steam-Powered Elevator Engines

By Dr. Lee Gray | March 1, 2012

Examining early steam-powered engines and their evolution There is, perhaps, nothing as antithetical to our conception of the modern electric elevator engine as the 19th-century steam engine. Our mind’s eye (and ear) imagines steam hissing, pistons clanking and oil dripping as a steam engine, located in a dirty, crowded mechanical room, drives a massive winding…

Read More
Protect-your-Elevator-Motor-Investment

KEB dV/dt Elevator Chokes: Protect your Elevator Motor Investment

By Elevator World | March 1, 2012

This article provides an explanation of the effects of high dV/dt created by variable-frequency drives and offers solutions to protect elevator motors. submitted by KEB America, Inc. During the past 20 years, AC variable-frequency drives (VFDs) have gained widespread acceptance in elevator applications. Overall, AC elevator drives provide im-proved ride performance, increased system efficiency and…

Read More
Submersible-Electric-Motors-for-Hydraulic-Lifts

Submersible Electric Motors for Hydraulic Lifts

By Ivo Busi and Fabio Calegari | March 1, 2012

Choosing the appropriate motor for an elevator can allow more efficient energy use. by Ivo Busi and Fabio Calegari In recent years, the hydraulic lift, as an alternative to the electric traction lift, has become one of the simplest and most common elevator applications in use. Its operational principle is based on a piston driven…

Read More
Sponsored
Sponsored
Sponsored

Elevator World | November 2021 Cover

Flipbook

Sponsored