Rabu, 27 Agustus 2014

STEP BEFORE BEGINNING ELECTRIC MOTOR 1 PHASE roll

Before we roll up the electric motor we have to understand that there are two kinds of coils, namely: Concentric and Spiral. To improve the electric motor, the steps are as follows:

     First draw the plot, planning and a full list of the winding coil or half coil, and counted the number of windings of the motor is original.
     Prespan (Paper plastics which are used to coat the wire with the email body in the groove), Paper prespan or mica to coat Email coil (coil) adjusted to its original diameter.
     Measure the width of the stator coils and make the mall
     Mal: The diameter of the circle on the coil.
     Sirlak: To coat the coil which is mounted on the motor so that if there are scratches on the email can be covered.
     Install the coil / wire in the groove email - groove that has rolled from the main coil former.
     After all the coils mounted on the groove, must be in advance meger. To know that there is a coil that is connected to the motor body
     After installing the coil should be in the first meger. Useful to check if the coil is not leaking.
     Can also be measured using the AVO meter with ohm meter to determine the resistance of each coil.
     Meger: Giving the AC power by using the tool (Tool) on a swivel so that electric currents produce up to 1000 Volts.
     When finished wrapped around the stator, coil and measure the results of our good try with the power supply voltage

             If the cross section of the wire becomes smaller and the number of windings fixed, then the electric current that flows will be smaller. So that electrical power into mechanical power is reduced and less. If the number of turns of each groove is reduced, it will cause the flow to be great. So that the heat will cause the increase in size / excess heat (over head).


Below are the types of electric motors 1 phase

     Type - the type of AC motors can be divided into six, namely:

     Motor series
     Shaded pole motors
     Motor Repulse
     universal motor
     Run capacitors
     Star capacitor

Motor star sentifugal capacitors usually have a switch, the switch that serves to break the auxiliary coil (winding auxiliri) if the motor is spinning 75% of the normal rotation, so that the motor is working only primary coil alone (main winding).
To reverse the direction of motor rotation can be done by reversing the direction of the current in the coil auxiliary or primary coil, with the proviso that the motor should stop rotating.

     Type - there are 3 types of motor capacitor is:

     Run capacitors
     Star capacitor
     doble capacitor

     This capacitor motor rotation (n) is very certain, that be affected by:

     The number of magnetic poles (p)
     Electrical frequency (f)

           So: n = 120 X f / p (rpm)

     For wrapped around the stator we must know

     Number of poles (P)
     The number of grooves (G)
     The width of the coil (which)
     The number of grooves per pole per phase (q)

          So: yg = G / P

     Seen from the electric motor windings can be divided into 2, namely:

     Winding consentris (centered)
      Coil distribution (spread)

     Type the stator windings are divided into 2, namely:

     Whole coil type (full) coil
     Half coil winding type

     To roll back a single phase motors, which used the same formula to formula 3 phase motors, it's just considered two phases. So that happened two phases, Primary Windings (BU) is made of wire which is greater than the auxilary winding (BB) and the auxiliary winding is connected a capacitor whose value is given.

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