Single phase transformer

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    06-Apr-2017
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Transcript of Single phase transformer

Slide 1

Ch - 4Single Phase TransformerPrepared By,Mr. Kapil P. RadadiyaAITSDS, Rajkot

Vector Diagram of 1- Transformer with Resistance and Reactance (For Unity Power factor)

Voltage Regulatiion of 1- Transformer

V2I2I2R02I2X02I2Z020V2OABCDMNL2

2I2R02Cos2I2X02Sin2

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4

Derivation of Voltage Regulation Approximate Voltage Drop

0V2 V2 = AN = AD + DN= I2R02Cos2 + I2X02Sin2

% V. R. = 0V2 V2 / 0V2 * 100 = I2R02Cos2 + I2X02Sin2 / 0V2 * 100

I2R02Cos2 = Resistive voltage drop I2X02Sin2 = Reactive voltage drop

For Leading Power Factor Load

% V. R. = I2R02Cos2 - I2X02Sin2 / 0V2 * 100

In General Voltage Regulation can be given by,

% V. R. = I2R02Cos2 I2X02Sin2 / 0V2 * 100