Continuing Education

Elevator Drives, Power Quality and Energy Savings

The basics of variable-frequency drives, their advantages and how harmonics are created by Jonathan Bullick and Brad Wilkinson Introduction During the past 25 years, the use of AC variable-frequency drives...

Variable-Frequency Drive Systems for Hydraulic Elevators

An overview of the flexibility and various types of energy-efficient hydraulic drives An Overview Elevators with hydraulic drives are flexible by definition. Almost infinite configurations of elevator and cabin designs...

Rope Dynamics

This study explores how transient vibrations arise and why rope vibrations occur. by Phil Andrew, MSc, MPhil and Stefan Kaczmarczyk, PhD Rope vibrations in an elevator system usually result in...

The Conflicting Roles of the Elevator Safety Code, LEED and ADA in Elevator Renovation

This article explores the issues related to the affects safety codes have on elevator renovations. The lifespan of a cab interior is shorter than that of the rest of the ...

Electrically Assisted Braking Using DC Hoist Motors

This article explores some of the issues related to braking performance on the emergency stopping of elevators. by Nick Marchitto This article explores some of the issues related to braking...

The Application of Electromechanical Spring-Set Brakes in MRL Machines

"This article discusses some of the basic components and operation of DC electromagnetic spring-applied brakes." by Jonathan Bullick Value: 1 contact hour (0.1 CEU) This article is part of ELEVATOR...

The winning team from Linden Lodge School; image courtesy of Otis

South London Students Awarded STEM Grant in Otis Program

STATION IN SOUTH INDIA WITH VT INAUGURATED

Railway Station in South India with VT Inaugurated

STANNAH TO MANAGE RAILWAY STATION ACCESSIBILITY UPGRADE

Stannah to Manage Railway Station Accessibility Upgrade

ASCENT ELEVATORS ACQUIRES SELECT CENTURY ELEVATOR ASSETS

Ascent Elevators Acquires Select Century Elevator Assets

image courtesy of CMRL

Fujitec India Awarded CMRL Escalator Contract