Dave Wilson, Editor, writes:
We see from your search that you're looking for information on the term "Harmonic Distortion",
and we have a large number of manufacturers' news releases and technical articles here on Engineeringtalk which will be of interest.
Let me be your guide.
Start with
the news release Digital metering supports Ethernet communication from
Tyco Electronics - Energy Division, which we summarised at the time by saying "The Integra 1630 DMS with Ethernet module acts as a BACnet/IP server device and may be queried by a BACnet/IP client device which conforms to the BACnet/IP
protocol".
Earlier in the week,
we featured the news release The true price of power supply harmonics from
Block UK: "Bob Liddle explains how to reduce the effects of harmonic distortion on power supply lines, thereby eliminating equipment failures and cutting production downtime, repair and replacement costs".
In January 2008, we covered the news from Eurotherm
concerning its EPower Controllers
- take a look at Power controllers offer flexible configuration
which says: "By using iTools customers can easily check the status of parameters, make changes or diagnose the unit either on a test bench or in the field without disturbing the process".
Take a look also at the news release from Tyco Electronics - Energy Division, Digital meter gets the measure of power,
as well as Compensator improves network power quality from ABB Power Technologies,
and Ethernet communications added to metering system from Tyco Electronics - Energy Division.
See also:
High-efficiency motors explained
(May 2007)
Andy Glover attempts to unravel what constitutes a high-efficiency electric motor
Voltage performance meter is quick and easy to use
(February 2007)
The new voltage performance monitor (VPM) from Ideal Industries gives building maintenance personnel, IT professionals and electricians a cost-effective solution to test voltage
Detecting corrosion early
(February 2007)
Popular Corrosion Detection Transmitters now available with multivariable outputs in a single device
Filters clean up nonlinear loads
(October 2006)
Harmonic filter modules reduce distortion, RMS and peak currents to acceptable levels
Harmonics considerations for panel builders
(August 2006)
Should mains harmonic distortion be a major concern for panel builders?
Test platform aids hearing quality
(June 2006)
A new Pulse platform based test setup allows Widex to make a comprehensive range of measurements on hearing aids
Logger records three-phase power parameters
(June 2006)
The new Fluke 1735 three-phase power logger records power, energy, and basic power quality parameters for power load studies
Drive software estimates harmonics
(April 2006)
Software calculates harmonics for installing variable frequency drives, providing accurate estimations of current and voltage harmonic distortion under varying supply and filtering conditions
Modules reduce harmonic distortion
(April 2006)
Harmonic filter modules designed to reduce harmonic distortion, RMS and peak currents to acceptable levels
Drive keeps water flowing in Nebraska
(February 2006)
Variable speed drive controlled pump system lets Nebraska City Utilities provide reliable water pressure throughout the area even when the water tower is out of service for maintenance
Experts ensure integrity of power supplies
(February 2006)
Maplewood Services specialises in working with facilities where the primary concern is the requirement for a high-integrity, safe, clean, dependable electrical supply
Drives exceed stringent harmonic standards
(October 2005)
A new AC drive is aimed at applications where reduced harmonics are a priority
Harmonic filter improves true power factor
(September 2005)
The HG7 drive-applied harmonic filter not only limits current distortion to less than 7% TDD, it also improves true power factor
Mine hoists near completion
(August 2005)
Sheffield-based AK Heavy Engineering is nearing completion of a $25 million mine hoist supply and installation contract, at the Nickel Rim South project in Sudbury, Ontario
Free guide to corrosion monitoring
(July 2005)
Pepperl+Fuchs is publishing a Quick Reference Guide to Corrosion Monitoring, which is available free of charge upon request
TEGG franchise awarded to UK company
(July 2005)
Maplewood Services has been awarded the UK's first ever franchise with TEGG, described as the worlds premier preventative electrical maintenance corporation
New location for brushless motor developer
(July 2005)
US-based brushless motor developer Aveox has moved to a new location in the Simi Valley, Los Angeles
Analysers aim for inverter and motor applications
(April 2005)
A new precision power analyser combines an exceptionally high accuracy (+/-0.02% of reading +0.04% of range) with a wide frequency range (DC, 0.1Hz to 1MHz), even for power measurements
More power for IP54 protected standard drives
(April 2005)
ABB has extended the range of its IP54 protected standard drives to 110kW from the previous maximum of 45kW
Upgraded power for Bookham
(March 2005)
A major electrical systems infrastructure upgrade project at Bookham's optical semiconductor facility near Northampton has been completed by ABB's Power Technologies business
Analyser conducts four measurements in one
(November 2004)
The new Yokogawa WT3000 is a power analyser which combines accuracy (+/-0.02% of reading +0.04%) with a wide frequency range (DC, 0.1Hz to 1MHz)
Motors make light of tunnelling through the Alps
(May 2004)
WEG AC induction motors, inverter drives, soft starters and transformers are playing a major role in a drilling machinery package that is helping to construct the world's longest railway tunnel
UPS family racks, stacks and stands alone
(April 2004)
An innovative new series of online, uninterruptible power supplies employs a single, standard battery across the range and can be used in stand-alone, rack-mounted, or stacking formats
The last word in power factor control
(March 2004)
ABB has designed its new RVT power factor controller as the 'ultimate' controller for the flexible monitoring and switching of capacitor banks in power factor control applications
Power meters feature Modbus communications
(January 2004)
The PM700 series of power meters provides all the basic measurement capabilities needed for monitoring an electrical installation
Standard drives go beyond the norm
(December 2003)
A new range of intuitive standard drives is designed to be sold off-the-shelf with few optional extras
Modular solutions aid energy management
(September 2003)
New combination utility meters and power quality instruments enhance flexibility at an affordable cost
Power quality - what is it?
(August 2003)
Advance Electronics Managing Director Nathan Briggs considers the question 'What is power quality?', and examines exactly what can be done to safeguard essential equipment
More power to the DIN rail
(June 2003)
New from Lambda is the DHP series of compact single output DIN-rail mount AC/DC power supplies
Flexibility is key for modular UPS systems
(March 2003)
A new series of uninterruptible power supplies uses a single, standard battery across the range and can be used in stand-alone, rack-mounted or stacking formats
Perkins reacts quickly for increased efficiency
(January 2003)
When Perkins Engines found that the power factor at its Peterborough plant was typically as low as 0.8, the company called in PFC Engineering for help
Parallel supplies keep three phases running
(November 2002)
The new Powerware 9305 80kVA Hot Sync model is the latest addition to the Invensys Powerware 9305 range
PFC boosts Perkins' efficiency
(November 2002)
Although the Perkins Engines plant at Peterborough has always had power factor correction equipment, a survey of its substations found that, typically, the power factor was 0.8
Enhanced insulation withstands inverter impurities
(October 2002)
Choosing the wrong motor for AC inverter control can result in reduced operating life - by as much as 75%