Public Power - September/October 2007 - (Page 8) S&C’s new IntelliRupter ® PulseCloser takes system protection to a whole new level. And it eliminates the need to close in on faults to test the line. Conventional reclosers test for faults by repeatedly applying fault current to the line, often with high peak currents caused by imprecise closing. The result: voltage sags, significant system stress, and avoidable damage—especially to costly substation transformers. S&C’s revolutionary new IntelliRupter® PulseCloser does things differently. Its PulseClosing™ Technology performs a fast close-open operation at just the right point-on-wave, putting a short, 5-ms pulse of current on the line to test for the presence of faults. Conventional Reclosing PulseClosing PulseClosing Technology drastically reduces overcurrent stress on your system, as shown here for a phase-wire to grounded-neutral fault. Increase the Life of Your Transformers—and Improve Customer Service! Cumulative damage from through-faults is a major cause of premature aging in substation transformers. PulseClosing Technology dramatically reduces through-faults. Your transformers (along with connectors, lines, and cables) will only experience overcurrent stress from the initial fault—not from subsequent reclosing operations—thus extending the life of one of your highest-value assets! And power quality is improved too. PulseClosing doesn’t disturb source-side customers with voltage sags and blinks, so you’ll get far fewer, costly complaints! Simplify and Improve System Protection IntelliRupter features a powerful control processor and fully integrated design, with accurate sensing and fast vacuum interrupters. Together, they enable a revolutionary new protection tool: Precision Curve Fitting, which custom-fits IntelliRupter’s time-overcurrent curve so maximum clearing time coordinates with the minimum response time of the upstream protective device. You’ll be able to apply more devices in series than conventional reclosers will allow, for enhanced circuit segmentation. Precision Curve Fitting ensures that all IntelliRupters are properly coordinated . . . no need to manually calculate protection settings for each one. IntelliRupter 60-Hz Ratings (50-Hz Ratings in Parentheses) kV Minimum Maximum BIL Amperes, RMS Continuous Interrupting, Sym. 11.43 (10) 18.81 (20) 15.5 (17.5) 27 (24) 110 125 630/800 630/800 12 500 12 500 800 amperes with a minimum wind velocity of 2 ft/sec. S&C ELECTRIC COMPANY Since 1911 Specialists in Electric Power Switching and Protection ©2006 S&C Electric Company 766-A0609 Offices Worldwide • 6601 N. Ridge Blvd. Chicago, IL 60626-3997 • Phone: (1) 773. 338.1000 • Fax: (1) 773. 338.2562 http://www.sandc.com
Table of Contents Feed for the Digital Edition of Public Power - September/October 2007 Contents Washington Focus 10 Questions Public Power (Every) Week Training Tomorrow’s Work Force What’s in Your Wallet? U.S. Lags in Broadband Deployment Now What? For Engineers Safety Community Broadband For Governing Boards Human Resources Hometown Connections Customer Service DEED Index to Advertisers Advertisers by Category Parting Shot Public Power - September/October 2007 Public Power - September/October 2007 - (Page Cover1) Public Power - September/October 2007 - (Page Cover2) Public Power - September/October 2007 - (Page 1) Public Power - September/October 2007 - (Page 2) Public Power - September/October 2007 - Contents (Page 3) Public Power - September/October 2007 - Contents (Page 4) Public Power - September/October 2007 - Contents (Page 5) Public Power - September/October 2007 - Contents (Page 6) Public Power - September/October 2007 - Contents (Page 7) Public Power - September/October 2007 - Contents (Page 8) Public Power - September/October 2007 - Contents (Page 9) Public Power - September/October 2007 - Washington Focus (Page 10) Public Power - September/October 2007 - Washington Focus (Page 11) Public Power - September/October 2007 - 10 Questions (Page 12) Public Power - September/October 2007 - 10 Questions (Page 13) Public Power - September/October 2007 - 10 Questions (Page 14) Public Power - September/October 2007 - 10 Questions (Page 15) Public Power - September/October 2007 - Public Power (Every) Week (Page 16) Public Power - September/October 2007 - Public Power (Every) Week (Page 17) Public Power - September/October 2007 - Public Power (Every) Week (Page 18) Public Power - September/October 2007 - Public Power (Every) Week (Page 19) Public Power - September/October 2007 - Public Power (Every) Week (Page 20) Public Power - September/October 2007 - Public Power (Every) Week (Page 21) Public Power - September/October 2007 - Training Tomorrow’s Work Force (Page 22) Public Power - September/October 2007 - Training Tomorrow’s Work Force (Page 23) Public Power - September/October 2007 - Training Tomorrow’s Work Force (Page 24) Public Power - September/October 2007 - Training Tomorrow’s Work Force (Page 25) Public Power - September/October 2007 - Training Tomorrow’s Work Force (Page 26) Public Power - September/October 2007 - Training Tomorrow’s Work Force (Page 27) Public Power - September/October 2007 - Training Tomorrow’s Work Force (Page 28) Public Power - September/October 2007 - Training Tomorrow’s Work Force (Page 29) Public Power - September/October 2007 - What’s in Your Wallet? (Page 30) Public Power - September/October 2007 - What’s in Your Wallet? (Page 31) Public Power - September/October 2007 - What’s in Your Wallet? (Page 32) Public Power - September/October 2007 - What’s in Your Wallet? (Page 33) Public Power - September/October 2007 - U.S. Lags in Broadband Deployment (Page 34) Public Power - September/October 2007 - U.S. Lags in Broadband Deployment (Page 35) Public Power - September/October 2007 - U.S. Lags in Broadband Deployment (Page 36) Public Power - September/October 2007 - U.S. Lags in Broadband Deployment (Page 37) Public Power - September/October 2007 - U.S. Lags in Broadband Deployment (Page 38) Public Power - September/October 2007 - U.S. Lags in Broadband Deployment (Page 39) Public Power - September/October 2007 - U.S. Lags in Broadband Deployment (Page 40) Public Power - September/October 2007 - U.S. Lags in Broadband Deployment (Page 41) Public Power - September/October 2007 - Now What? (Page 42) Public Power - September/October 2007 - Now What? (Page 43) Public Power - September/October 2007 - Now What? (Page 44) Public Power - September/October 2007 - Now What? (Page 45) Public Power - September/October 2007 - Now What? (Page 46) Public Power - September/October 2007 - Now What? (Page 47) Public Power - September/October 2007 - For Engineers (Page 48) Public Power - September/October 2007 - For Engineers (Page 49) Public Power - September/October 2007 - Safety (Page 50) Public Power - September/October 2007 - Safety (Page 51) Public Power - September/October 2007 - Safety (Page 52) Public Power - September/October 2007 - Community Broadband (Page 53) Public Power - September/October 2007 - Community Broadband (Page 54) Public Power - September/October 2007 - Community Broadband (Page 55) Public Power - September/October 2007 - For Governing Boards (Page 56) Public Power - September/October 2007 - Human Resources (Page 57) Public Power - September/October 2007 - Human Resources (Page 58) Public Power - September/October 2007 - Hometown Connections (Page 59) Public Power - September/October 2007 - Customer Service (Page 60) Public Power - September/October 2007 - Customer Service (Page 61) Public Power - September/October 2007 - Index to Advertisers (Page 62) Public Power - September/October 2007 - Advertisers by Category (Page 63) Public Power - September/October 2007 - Parting Shot (Page 64) Public Power - September/October 2007 - Parting Shot (Page Cover3) Public Power - September/October 2007 - Parting Shot (Page Cover4)
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