A.O.Smith Motor Catalog - Universal Electric Motors

Speed Engineered® MotorsE-Plus ® 3Speed Engineered ®Inverter Duty MotorSpeed Plus ® MotorAt A. O. Smith, we build a motorable to withstand voltage peaks 3.5 timeswhat is stated on the motor nameplate.Therefore we design additionalinsulation (tape, sleeving, phasepaper, etc.) and strategically locatethis added insulation in a mannerthat will yield the necessary protectionagainst the high voltage pulses thatmay occur between magnet wire strands.This approach yields the desired designintegrity.With the design for insulationand winding layout determined,the success of each motor nowdepends on placing the insulationproperly during production. Toprovide final assurance for ourcustomers, A. O. Smith uses a proprietaryCIV tester that employs a uniqueprocedure to detect and measure coronafor each and every Speed Engineeredmotor we produce…before that motorleaves our factory!Because Motor/Drive ApplicationsAre so Varied, A. O. Smith OffersThree Distinct Families of SpeedEngineered ® Motors:E-Plus ® motors, the industry’s firsthigh efficiency, energy-saving motor,meets 1997 EPACT standards. Now,E-Plus Motors also carry the protectionof the Speed Engineered design and iswarranted to offer the best performanceavailable to inverter duty applications.E-Plus ® 3 motors offer even heartierenergy-efficient performance and savings,exceeding most utility conservationinitiatives, in addition to meeting the1997 EPACT standards. All E-Plus 3motors are Speed Engineered rated forcompatible inverter duty applications.Both E-Plus ® and E-Plus ® 3 motorsare available in a variety of applicationconfigurations including: variable orconstant torque loads, PWM, sensorlessor sensored vector and with limited orbroad speed ranges.Speed Engineered motors are ratedfor 4:1 speed ratio at constant torque or6:1 at variable torque.In addition to being corona free,A. O. Smith Speed Plus ® motors offermany additional benefits such as:Wide Speed Ranges to fit yourapplication:• 20:1 at constant torque, standard• 1000:1 at constant torque with theaddition of a blower kitStandard Features provide operationalflexibility and dependability:• Totally-enclosed severe duty• All cast-iron construction• VPI corona-free Class F insulationsystem• F-1 mounted conduit box• Dual foot holes• Normally closed thermostats• Encoder provisionsHighly Adaptable to address morespecific process specifications:• Provisions for mounting a widerange of encoders:- Dynapar HS35- Avtron M285- Lakeshore SL56- BEI HS 35• 120-volt A/C blower kits• Drive end C-Face• Drive end D-Flange• Field convertible to F-2 conduit boxlocation• Brake kitswww.aosmithmotors.com