THREE PHASE TRANSFORMER WINDING CONNECTIONS
A three-phase transformer bank can be easily created by using three single-phase transformers. The two sides of these three transformers…
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POWER FACTOR
WHAT IS POWER FACTOR Power factor (PF) is simply the relationship between the active and reactive power on an electricity…
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CONSTRUCTION AND OPERATION OF A SYNCHRONOUS MOTOR
The stator winding of a synchronous motor is similar to that of a 3 phase induction motor. The rotor consists…
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TYPES OF SINGLE PHASE MOTORS
Single phase motors are manufactured in fractional kilowatt range to be operated on single phase supply and for use in…
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REVERSING DIRECTION OF ROTATION OF UNIVERSAL MOTOR
The direction of rotation of a universal motor can be changed by either: (i) Reversing the field connection with respect to…
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STANDARD SPLIT PHASE MOTORS
The stator of a standard split phase motor has two windings viz., a main winding and an auxiliary winding. These…
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CAPACITOR TYPE SPLIT PHASE MOTORS
Capacitor type split phase motors are generally similar to the standard split phase construction except for the addition of capacitor…
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STARTERS FOR CAPACITOR TYPE SPLIT PHASE MOTORS
We know that direction of a split phase motor can be reversed if the connection of one of the windings…
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STARTER FOR TWO VALUE CAPACITOR TYPE SPLIT PHASE MOTORS
This type of split phase motors have two capacitors of different values in the auxiliary winding. The motors develop a…
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STARTER FOR A TWO VALUE CAPACITOR MOTOR USING A CURRENT RELAY AND AN AUTO TRANSFORMER
This type of starter uses a current relay in series with the main winding and an auto-transformer in the auxiliary…