What is the phasor diagram of transformer?
The exact phasor diagram of the transformer can now be drawn by drawing the flux phasor first and then applying the KVL equations in the primary and in the secondary. The phasor diagram of the transformer when it supplies a lagging power factor load is shown in the figure 24.10.
How do you draw a phasor diagram for a transformer?
Steps to draw the phasor diagram
- Take flux ϕ, a reference.
- Induces emf E1 and E2 lags the flux by 90 degrees.
- The component of the applied voltage to the primary equal and opposite to induced emf in the primary winding.
- Current I0 lags the voltage V1′ by 90 degrees.
- The power factor of the load is lagging.
What is the importance of phasor diagram in transformer?
Important Points for Phasor Diagram of Transformer: 3) Electromotive Force (EMF) created by working Flux Ø lags behind it by 90 degree. 4) When Transformer is connected with a Load, it takes extra current I’ from the Source so that N1I’ = N2I2 where I’ is called load component of Primary Current I.
What is the basic principle of a transformer?
mutual induction
Principle – A transformer works on the principle of mutual induction. Mutual induction is the phenomenon by which when the amount of magnetic flux linked with a coil changes, an E.M.F. is induced in the neighboring coil. A transformer is made up of a rectangular iron core.
What is the phasor diagram illustrate it with an example?
A phasor diagram is used to show the phase relationships between two or more sine waves having the same frequency. A phasor diagram is one in which the phasors, represented by open arrows, rotate counterclockwise, with an angular frequency of ω about the origin.
What are phasors in electrical engineering?
(Electrical engineering: Semiconductor and electronic circuitry, Analog) A phasor is a rotating vector representing a quantity, such as an alternating current or voltage, that varies sinusoidally. A phasor representation is a simple way of reducing the complexities of handling single frequency circuits.
How do you calculate current in a 3 phase transformer?
the following figure presents a nameplate of a three phase transformer….Using the aforementioned formula, let’s confirm this rating:
- Primary Voltages or High Voltages (H.V) is 11000 volts.
- Primary Current (current on High Voltage side) is 5.25 amps.
- KVA = (√3. V x I) /1000= (1.732 × 11000 × 5.25)/1000=100 KVA.
Why do we use Delta-Star in transformer?
Delta-Star Connection of Transformer The main use of this connection is to step up the voltage i.e. at the begining of high tension transmission system. It can be noted that there is a phase shift of 30° between primary line voltage and secondary line voltage as leading.