Motors http://ecmweb.com/taxonomy/term/6623/more en Comparing the Basic Design of Stepper and Servo Motors http://ecmweb.com/motors/comparing-basic-design-stepper-and-servo-motors <div class="field-byline"> By David Herres, Master Electrician </div> <div class="node-body article-body">Stepper motors resemble servo motors in that both types are characterized by an ability to rotate a partial turn and then stop for any interval with or without holding torque.</div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/motors/comparing-basic-design-stepper-and-servo-motors" target="_blank">read more</a></p> http://ecmweb.com/motors/comparing-basic-design-stepper-and-servo-motors#comments Motors Contractor Silver Fri, 18 Apr 2014 15:08:00 +0000 44761 at http://ecmweb.com DC Motor Theory, Operation, and Maintenance http://ecmweb.com/motors/dc-motor-theory-operation-and-maintenance <div class="field-byline"> By David Herres, Master Electrician </div> <div class="node-body article-body">DC motors may not be the wave of the future, but they certainly have a secure place in today’s workplace. Therefore, it’s worthwhile for electrical professionals to take a look at their inner workings and, when the time comes, be prepared to service DC motors.</div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/motors/dc-motor-theory-operation-and-maintenance" target="_blank">read more</a></p> http://ecmweb.com/motors/dc-motor-theory-operation-and-maintenance#comments Motors Contractor Silver Fri, 15 Nov 2013 20:31:00 +0000 37611 at http://ecmweb.com Motors Shipments Retreat Slightly in Second Quarter of 2013 http://ecmweb.com/news/motors-shipments-retreat-slightly-second-quarter-2013 <div class="node-body article-body">NEMA’s Motors Shipments Index decreased by 7.2 percent on a quarter to quarter basis during the second quarter of 2013. </div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/news/motors-shipments-retreat-slightly-second-quarter-2013" target="_blank">read more</a></p> http://ecmweb.com/news/motors-shipments-retreat-slightly-second-quarter-2013#comments Motors News Mon, 07 Oct 2013 15:20:00 +0000 35571 at http://ecmweb.com Motor Efficiency, Power Factor, and Load http://ecmweb.com/motors/motor-efficiency-power-factor-and-load <div class="field-byline"> By Oscar Brandser, CPE, Xcel Energy </div> <div class="node-body article-body">How to improve system performance and generate cost savings on the plant floor</div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/motors/motor-efficiency-power-factor-and-load" target="_blank">read more</a></p> http://ecmweb.com/motors/motor-efficiency-power-factor-and-load#comments Energy Efficiency Motors Power Quality Thu, 15 Aug 2013 19:43:00 +0000 33421 at http://ecmweb.com Industrial Efficiency Campaign Targets $5.8 Billion in Annual Energy Savings http://ecmweb.com/motors/industrial-efficiency-campaign-targets-58-billion-annual-energy-savings <div class="node-body article-body">Motor Decisions Matter focuses on motor-driven systems</div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/motors/industrial-efficiency-campaign-targets-58-billion-annual-energy-savings" target="_blank">read more</a></p> http://ecmweb.com/motors/industrial-efficiency-campaign-targets-58-billion-annual-energy-savings#comments Motors Mon, 15 Jul 2013 21:18:00 +0000 32471 at http://ecmweb.com How Precise Are Motor Nameplate Ratings? http://ecmweb.com/motors/how-precise-are-motor-nameplate-ratings <div class="field-byline"> By Thomas H. Bishop, P.E. </div> <div class="node-body article-body">Correct interpretation of five operating parameters for NEMA, IEC induction motors</div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/motors/how-precise-are-motor-nameplate-ratings" target="_blank">read more</a></p> http://ecmweb.com/motors/how-precise-are-motor-nameplate-ratings#comments Motors Wed, 12 Jun 2013 20:16:00 +0000 31571 at http://ecmweb.com Bad Practices, Part 4 http://ecmweb.com/ops-amp-maintenance/bad-practices-part-4 <div class="node-body article-body"><p> Bad maintenance practices tend to sneak into the way things get done. Here are two more items to guard against:</p> <p> <strong>Bad Practice #6 &mdash; Leaving Motor Starters Out of Motor Preventive Maintenance Programs</strong></p></div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/ops-amp-maintenance/bad-practices-part-4" target="_blank">read more</a></p> http://ecmweb.com/ops-amp-maintenance/bad-practices-part-4#comments Motors Ops & Maintenance Tue, 28 May 2013 17:22:00 +0000 30741 at http://ecmweb.com Is a Failing Bearing Causing the Vibration? http://ecmweb.com/motors/failing-bearing-causing-vibration <div class="field-byline"> By Eugene Vogel, Electrical Apparatus Service Association </div> <div class="node-body article-body">Troubleshooting tips to help you identify and remedy bearing vibration</div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/motors/failing-bearing-causing-vibration" target="_blank">read more</a></p> http://ecmweb.com/motors/failing-bearing-causing-vibration#comments Motors Wed, 15 May 2013 19:36:00 +0000 30341 at http://ecmweb.com NEC Rules for Fire Pumps http://ecmweb.com/code-basics/nec-rules-fire-pumps <div class="field-byline"> By Mike Holt, NEC Consultant </div> <div class="node-body article-body">Understanding the circuit protection requirements of Art. 695 and why they’re different from other parts of the NEC</div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/code-basics/nec-rules-fire-pumps" target="_blank">read more</a></p> http://ecmweb.com/code-basics/nec-rules-fire-pumps#comments Code Basics Motors Tue, 16 Apr 2013 20:30:00 +0000 28961 at http://ecmweb.com Sizing Circuit Protection and Conductors — Part 3 http://ecmweb.com/nec/sizing-circuit-protection-and-conductors-part-3 <div class="field-byline"> By Mark Lamendola, Electrical Consultant </div> <div class="node-body article-body">Why you size motor circuit conductors and protection differently than you do for circuits of other types of loads </div> <div class="og_rss_groups"></div><p><a href="http://ecmweb.com/nec/sizing-circuit-protection-and-conductors-part-3" target="_blank">read more</a></p> http://ecmweb.com/nec/sizing-circuit-protection-and-conductors-part-3#comments Motors Contractor NEC Tue, 16 Apr 2013 20:05:00 +0000 29091 at http://ecmweb.com