So what exactly is an all electric vehicle? If you are in teh electromechanical industry will  see some familiar faces: Motor type:  Electric cars can run on either AC or DC motors. Electric traction Motor: These motors drive the vehicle's wheels using power provided by a traction battery. Traction Battery Pack: This battery stors electricity primarily for use of traction motor. Auxiliary battery: This battery provides power to areas other than the electric motor. DC converter: Co
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Not sure if motor needs repair or replaced?  Here is a quick chart.  It's a guideline only.  Please consult your motor rebuilder or technician. Courtesy by EASA.
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Someone asked about using a 230 volt motor on a 208 volt circuit.  A reply was that it should be okay because "most 230 volt three phase motors 5hp and under are designed to accept 208 or 230V..."  Isn't it true that the only standard for any horsepower rating is that standard performance applies at a terminal voltage up to 105 below the nameplate value - which is this case would be 207 volt. So 208 is okay, but according to utlity system standards the actual line voltage at the motor
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Can anybody rightfully claim to recondition or refurbish a motor so that it's literally as good as new? No. All the electrical and mechanical components undergo natural aging, augmented by thermal and mechanical stresses caused by heat, vibration, contamination and torque throughout the previouse operating life of the machine. A new winding would "start the clock" again, but that won't affect the bearings, and vice versa.  Neither replacment will directly affect shaft integrity.  Som
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A cooler running motor ought to last longer and a more efficient motor ought to run cooler.  So doesn't higher efficiency mean longer motor life? Not necessarily.  First, if by "life" you mean the time until the first repair, that's more likely to be because of a bearing failure than because of winding temperature.  Second, a more efficent motor does have lower heat-producing losses, but that also may allow use of a less robust cooling fan (meaning lower windage loss) because the
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  The economy has been battered for a long while now and until things improve, budgets are being squeezed. Consumers are looking to save money without sacrificing quality wherever possible. And this includes maintenance facilities too. When your company is asked to examine costs and to work within a smaller budget, every purchase decision becomes a cost/benefit analysis. But motor and control systems are critical and must be kept running with little or no downtime. So tightening budget
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My neighbor installed the wrong type of capacitor on my Grundfos water pump motor. He installed a start capacitor with 30 mfd when he should have installed a run capacitor. Start capacitors which are intended to increase starting torque are designed for CSCR or CSIR motors. These systems will utilize a centrifugal switch, current relay, or potential relay to remove the capacitor from the circuit once the motor reaches ~75% of rated RPM. This usually will take less than 1 second. Start capacito
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