By Isabelle Heriakian / Published on Thu, 2009-01-29 14:30
Leonardo ENERGY has launched a new publication for electrical design engineers called “Guide for electrical design engineers”. Each chapter will study an electrical design case and present its methodical step-by-step calculation method. To view the different chapters, click on their title below.
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By Isabelle Heriakian / Published on Thu, 2009-01-29 10:19
In this guide, a design engineer works on a converter drive design and determines the voltage change coefficient during the drive start, compares it to permissible levels and suggests solutions to have it satisfying the limit.
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By Isabelle Heriakian / Published on Wed, 2009-01-14 16:07
In this guide, a design engineer has to advise his industrial customer who plans to connect a new induction motor to the power supply system. Using the permissible level of voltage fluctuations, his methodology is described.
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By Hans De Keulenaer / Published on Sat, 2008-12-13 11:11
ASHRAE is hosting a speciality conference on the topic in March in San Francisco.
“We have a reached a time when the building industry is being called to shift to a new level of performance that will reduce our energy and carbon footprint,” Bill Harrison, ASHRAE president, said. “It is time to advance net-zero-energy building knowledge.”
ASHRAE’s Countdown to a Sustainable Energy Future...Net-Zero and Beyond conference takes place March 29-31 at Hyatt at Fisherman’s Wharf in San Francisco.
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By Hans De Keulenaer / Published on Wed, 2008-11-26 20:25
Ali Kazemi, Schweitzer Engineering Laboratories, Inc.
Casper Labuschagne, Schweitzer Engineering Laboratories, Inc.
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By Hans De Keulenaer / Published on Wed, 2008-11-05 09:51
This introductory webinar explains how a heat pump system works, what is the most suitable solution in your case and, if it makes sense, how to start planning and building your installation.
After a briefing presentation, a case study will be presented using the RETScreen analysis software.
Related content:
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By Isabelle Heriakian / Published on Mon, 2008-11-03 16:55
In this guide, you will learn how to determine the maximum and minimum compensator power in order to compensate reactive power in case of harmonic pollution.
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By Hans De Keulenaer / Published on Mon, 2008-10-06 16:55
Hospitals represent 6% of the total energy consumption in the utility buildings sector. The webinar analyses the use of energy, benchmark methodologies and the potential energy savings in the hospital sector, on the basis of theory and practical case studies.
See also
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By Guy Kasier / Published on Mon, 2008-06-30 11:51
When using multicable it is all too easy to use all the wires of the cable for connecting to pushbuttons during the installation. However, this reduces the flexibility because no additional pushbuttons can be installed with this cable at a later stage. In practice it is advisable to set some of the wires aside during the installation. Additional pushbuttons can then be fitted later.
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By Isabelle Heriakian / Published on Wed, 2008-06-25 11:20
A company specialized in uninterruptible power supply systems developed and manufactured in 2006 a system comprising a 400kVA UPS unit.
The system was installed in a production facility manufacturing food packaging equipment and foil, located in northern Poland.
Frequent voltage dips and fluctuations were severely impairing the production process, causing downtimes of several-hour duration, which generated substantial losses. Restarting the production caused another losses resulting from the process specifi city.
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By Hans De Keulenaer / Published on Tue, 2008-06-10 11:46
By I Evans et al
The use of nonlinear devices has made the electrical world a lot more complex. Many of the nonlinear loads cause electrical problems such as flicker, harmonics, poor displacement power factor, and current in-rush requirements that conventional solutions fail to remedy.
Active harmonic filters bring a new perspective to the problems and yield surprising results. However, there are two predominant logic designs and only one provides the speed and total control required for these tough applications.
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By Isabelle Heriakian / Published on Fri, 2008-04-18 19:23
Brian Fortenbery from EPRI presents the Industrial Design Guide (IDG). The IDG provides a strong technical basis for working with industrial end users in power quality, distribution, and economic development activities. The tool describes in detail such industrial processes as injection-molded plastics and CNC machining, includes electrical diagrams of the processes and sub-processes, and discusses the economics of process-associated downtime. The descriptions and drawings are interactive, leading the user to important power quality considerations, such as sensitive components, test protocols, solutions, and applications. This authoritative guide to industrial processes can be used to train new power quality engineers, refresh seasoned representatives, and enhance the credibility of all employees in the presence of end users, and the web-based format makes it easy for even novices to use.
This interview is in 2 parts.
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By Isabelle Heriakian / Published on Thu, 2008-04-03 20:28
Angelo Baggini, Franco Bua, Francesco Buratti
This paper summarises the outcomes of a European survey, aiming to evaluate typical office building electrical installation design practices in the years 2000 and 2005 in terms of adoption of Power Quality solutions.
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By Angelo Baggini / Published on Mon, 2008-03-17 14:30
Born from the experience of Leonardo's award winning Leonardo Power Quality Initiative, on April 11th, the new Handbook of Power Quality will be available worldwide, published by Wiley.
The book uses the perspectives of both power suppliers and electricity users, with contributions from experts in all aspects of PQ providing a balance of scientific and practical information on:
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By Antoni Klajn / Published on Sun, 2006-01-01 01:00
Many industrial and commercial consumers require higher power quality than that available directly from the supply network. Improving the performance of the network is both difficult and expensive, so it is left to the consumer to take action to mitigate the effects of poor power quality.
There is no single solution. The most appropriate solution will be determined by the power level involved, the quality and reliability level required, the quality and reliability of the incoming power, geographical location and cost.
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