## What is phasor diagram in transformer?

The phasor or vector diagrams for a transformer on resistive, inductive, and capacitive loads are drawn by the taking flux φ as the reference. Let, V 1 = Primary supply voltage. E 1 & E 2 = Primary and secondary induced e.m.f’s. I o = No-load primary input current.

### How do you draw a phasor diagram for a transformer?

Steps to draw the phasor diagram

1. Take flux ϕ, a reference.
2. Induces emf E1 and E2 lags the flux by 90 degrees.
3. The component of the applied voltage to the primary equal and opposite to induced emf in the primary winding.
4. Current I0 lags the voltage V1′ by 90 degrees.
5. The power factor of the load is lagging.

What is on load phasor diagram?

The total current drawn from the supply by the primary winding is the vector sum of the no-load current, Io and the additional supply current, I1 as a result of the secondary transformer loading and which lags behind the supply voltage by an angle of Φ. We can show this relationship as a phasor diagram.

What type of load is A transformer?

Reactive/Inductive Load – An inductive load converts current into a magnetic field. Inductive reactance resists the change to current, causing the circuit current to lag voltage. Examples of devices producing reactive/inductive loads include motors, transformers and chokes.

## How do you draw a phasor diagram?

Generally the reference phasor is drawn along the horizontal axis and at that instant in time the other phasors are drawn. All phasors are drawn referenced to the horizontal zero axis. Phasor diagrams can be drawn to represent more than two sinusoids.

### How do you draw a phasor diagram for a 3 phase transformer?

The ∆-Y connection of the three winding transformer is shown in the figure below. The primary line voltage is equal to the secondary phase voltage. The relation between the secondary voltages is VLS= √3 VPS. The phasor diagram of the ∆-Y connection of the three phase transformer is shown in the figure below.

What type of load is a transformer?

How is the phasor diagram of a transformer created?

When the transformer secondary is connected to an inductive load, the current flowing in the secondary winding is lagging w.r.t secondary terminal voltage. Let us assume that the current is lagging by an angle of ɵ2. If we take the working flux Ø as reference, the phasor diagram of transformer will be as shown below.

## How are no load and on load phasor diagrams related?

The total current drawn from the supply by the primary winding is the vector sum of the no-load current, Io and the additional supply current, I1 as a result of the secondary transformer loading and which lags behind the supply voltage by an angle of Φ. We can show this relationship as a phasor diagram.

### How is the power factor of a transformer related to the load?

The power factor of the secondary side depends upon the type of load connected to the transformer. If the load is inductive as shown in the above phasor diagram, the power factor will be lagging, and if the load is capacitive, the power factor will be leading. The total primary current I 1 is the vector sum of the currents I 0 and I 1 ’. i.e

How to calculate the primary current of a phase transformer?

We can show this relationship as a phasor diagram. If we are given currents, IS and Io, we can calculate the primary current, IP by the following methods. A single phase transformer has 1000 turns on its primary winding and 200 turns on its secondary winding.

What is phasor diagram in transformer? The phasor or vector diagrams for a transformer on resistive, inductive, and capacitive loads are drawn by the taking flux φ as the reference. Let, V 1 = Primary supply voltage. E 1 & E 2 = Primary and secondary induced e.m.f’s. I o = No-load primary input current.…