Web Briefs, July EA

Our new, Blog-version of Web Briefs includes links to the websites/internet references we believe will be useful to persons in the electromechanical industries.  Previously listed in the magazine, these web briefs allow you to be one click away from your desired destination:

Hudson Products Corp. www.hudsonproducts.com: technical papers on axial flow fan operation and performance; fan efficiency in cooling tower service; 35-page Basics of Axial Flow Fans manual explaining fan selection, performance calculations, effects of inlet conditions and tip clearance, and system resistance; noise prediction and concerns including 11-page paper on noise in draft fan cooling tower application; two-part report on minimizing fan energy cost.

Storage Battery Systems, LLCwww.sbsbattery.com:  technical papers on battery conductance testing, full discharge testing, and general ohmic measurements; battery monitoring; parallel operation of VRLA battery strings; impact of short circuits on battery systems; effect of operating temperature on battery operation, including thermal runaway.

Woodbank Communications, Ltd.www.mpoweruk.com: “knowledge base” about battery and charger technologies and applications; battery types, chemistry, performance, management systems, and failure modes; battery glossary from “AC Inverter” to “Zebra battery.” Also, electric machines and semiconductor basics.

Bright Hub Engineeringwww.brighthubengineering.com: articles on transformer testing and fault finding; correcting transformer power factor; types of batteries and battery technology; large battery systems; causes of arcing in substations; active and passive power factor correction; symmetrical components; ultra capacitors; calculating energy loss in transmission lines; insulating materials; vibration analysis; thermocouple validation; motor testing.

Continuing Education & Development, Inc.www.cedengineering.com: online course material on fundamentals of lightning protection systems; fundamentals of modern electrical substations (in three parts); a-c machines; understanding motor nameplate information; NEMA versus IEC standards; principles and methods of temperature measurement; introduction to diesel-electric generating plants; fiber optics; semiconductors; batteries; motor efficiency energy management.

Kansas State University — www.mne.ksu.edu/people/personal/white/pdf-files: two-part 2004 technical article on “Heat Loss from Electrical and Control Equipment in Industrial Plants”—calculations, test results and comparisons, including liquid-filled and dry-type transformers, switchgear, circuit breakers, cable tray, inverters, battery chargers, reactors, and drives.

Ohio Electric Motorswww.ohioelectricmotors.com: technical articles on d-c motor high-efficiency designs; d-c motor protection; guide to electric drives and d-c motor control; guide to electric motor compliance standards; guide to d-c motor maintenance; Q&A on motor life expectancy; links to various technical book pages.

SafeWork SAwww.safeworkaustralia.gov.au:  sixty-two-page Code of Practice “Managing Electrical Risks in the Workplace” containing 10 chapters and four Appendices on working de-energized; low- and high-voltage electrical work; meaning of key terms; tools and equipment; risk management; 32-page “Technical Guidelines for Workplace Electrical Safety” with nine chapters and Appendix, on management of electrical hazards; who is a “competent person”; legislative framework for electrical safety; four-page guide to “Testing of Electrical Equipment.”

PowerFusewww.edisonfuses.net: application information for high-speed fuses; fuse rating guide; fuse sizing; fuse and circuit breaker comparison; practical fuse specification.

Edited by the EA staff

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