Power Standards Lab - Cover Story Archive
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FREE Power Quality Teaching Toy |
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NEW! Now you can download Edition 2.0 of Alex McEachern's Power Quality Teaching Toy.
Rev 2.0.3 updated on 4 February 2005 - neutral vectors, corrections, improved animations, and more ! This world-famous program has been revised to include
This is an ideal program for engineers, and engineering students, who want to get an intuitive feel for power quality issues. Alex uses it in his power quality seminars around the world. It's a great toy - give it a try! |
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PSL receives feedback... |
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Here's what engineers have to say recently about PSL's on-site power quality testing:
"We have tested with other labs, and PSL's equipment is safer and more reliable. We learned a lot just from PSL's safety checklist. And we passed on our first try - excellent!" "PSL was very helpful, troubleshooting technical problems that -- as it turned out -- were not related to voltage sags. I really appreciate the special effort PSL made, cutting short a vacation to make sure that we met our product release schedule." "Hi, team, Thanks for the incredible day of testing on 21 August: it permanently modified my understanding of the effects of power line voltage sags on equipment connected to the power line. Thank you for the experience." "Excellent! Well organized, checklists showed a lot of experience. PSL taught us enough so we can do our own testing next time." "Very helpful, well prepared, would recommend PSL to anyone needing help with SEMI F47." "Impressed with knowledge and sophisticated equipment. Great collection of accessories - PSL had everything we needed, tools, clip leads, flash lights, magnifiers, and then some." |
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Huge North American power failure |
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On 14 August, 2003, a huge region in the Northeast lost power, including several states and parts of Canada.
If you're an engineer, and would like to see graphs of exactly what happened (including some horrifying frequency excursions), take a look at an excellent engineer's report by our long-time colleague, Erich Gunther More detailed graphs and information about the Signature System that captured the blackout The official information from The North American Electric Reliability Council 
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New FREE PQ Teaching Toy for engineers |
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PSL has released a FREE program for engineers who want to play with power disturbances and DC supplies.
The program, call the Power Quality Teaching Toy, graphically shows how different disturbances affect DC bus voltage. Engineers dial in disturbance characteristics such as depth, duration, phase shift, amplitude, frequency, and decay, and watch the affected power supply on an oscilloscope. Supply characteristics can be changed, too. The program can be installed on any Windows computer. Copying and sharing are encouraged. The program is free, so no support is available. |
Simulates sags, swells, DC supplies |
PSL in Korea |
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PSL is pleased to announce our new partnership with Jaeshin Information Co of Korea.
In addition to selling and supporting PSL's Industrial Power Corruptor and Power Quality Relay, Jaeshin has already developed a three-phase power quality counter based on PSL's PQ1 Relay. For more information about PSL in Korea, please contact Mr. Cheul Kim, Technical Director, at ceo@jsdata.co.kr. For information about PSL's services and products in Japan, China, Singapore, Great Britain, Sweden, and elsewhere, please contact Barry Tangney at Barry@PowerStandards.com. |
New partnership with Jaeshin Information Co. |