Automatic Induction Motor Starter with Programmable Timer
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 projectsofme Active In SP Posts: 1,124 Joined: Jun 2010 16-10-2010, 01:53 PM   ELECTRICAL.ppt (Size: 2.13 MB / Downloads: 401) SINGLE PHASE INDUCTION MOTOR: TYPES OF SINGLE PHASE INDUCTION MOTOR: Shaded Pole(Very Small Motors) Split-Phase a) Capacitor Start Capacitor Run Motor ----- Fan Motor b) Capacitor Start Inductor Run Motor ----- Fractional H.P. motor for Pump sets. 2(b) Capacitor Start Induction Motor: MOTOR MAINTENANCE: MECHANICAL: Greasing the bearings. Alignment with the pump, blower, etc. Vibrator check. Motor body temperature. ELECTRICAL: Measure the insulators resistance of the motor winding.(To be at least above 10 mega ohms) Terminal block and termination of windings Double earthing of motor body. HARMONICS: *) The AC voltage or current in a non linear electrical load will have odd and even harmonics. The odd harmonics especially 3rd and 5th , will result in unwanted losses called harmonic losses. *) The 3rd harmonics will have its frequency 3 times its fundamental frequency. Suppose the fundamental frequency is 50 cycles per second, its 3rd harmonic will have 150 cycles per second. *) In order to reduce the harmonic losses, it is required to have filter circuits comprising of inductance and capacitance(LC filters) in the non linear loads such as UPS, VFD. *) It is better that the total harmonic distortion of voltage is maintained 10% or less and the THD(Total Harmonic Distortion) of current 5% or less. THREE PHASE INDUCTOR MOTOR: The motor converts electrical energy into mechanical energy. This motor works as electrical induction. This motor has a rotor and stator. The stator has a 3 phase winding. The rotor can be of cage type or slip ring type. The cage rotor has solid aluminum or copper bars inserted in the rotor slots where as the slip ring rotor has a 3 phase winding terminated on to 3 slip rings.
 seminar paper Active In SP Posts: 6,455 Joined: Feb 2012 14-02-2012, 04:14 PM to get information about the topic realy of induction motor protection at low voltages full report ,ppt and related topic refer the link bellow topicideashow-to-automatic-induction-motor-starter-with-programmable-timer topicideashow-to-fault-detection-and-protection-of-induction-motors-using-sensors topicideashow-to-protection-of-low-voltage-dc-micro-grids
 Guest Thinking To Register 06-11-2012, 03:25 PM hey i just want its ckt diagram plz help me.............
 seminar tips Super Moderator Posts: 8,857 Joined: Oct 2012 07-11-2012, 11:49 AM to get information about the topic "Automatic Induction Motor Starter with Programmable Timer" related topic refer the link bellow topicideashow-to-automatic-induction-motor-starter-with-programmable-timer