P.U. Primary Resistance Drop Calculator

✖Primary Current is the current which is flow in the primary winding of the transformer. The primary current of the transformer is dictated by the load current.ⓘ Primary Current [I₁]			+10% -10%
✖The Equivalent Resistance from Primary side is the total resistance of the primary side.ⓘ Equivalent Resistance from Primary [R₀₁]			+10% -10%
✖EMF Induced in Primary Winding is the production of voltage in a coil because of the change in magnetic flux through a coil.ⓘ EMF Induced in Primary [E₁]			+10% -10%

✖P U Primary Resistance drop is defined as the resistance drop at rated current and frequency expressed at rated voltage.ⓘ P.U. Primary Resistance Drop [R_pu]

⎘ Copy

👎

Formula

LaTeX

Reset

👍

Download Transformer Formula PDF PDF Image

P.U. Primary Resistance Drop Solution

STEP 0: Pre-Calculation Summary

Formula Used

P U Primary Resistance drop = (Primary Current*Equivalent Resistance from Primary)/EMF Induced in Primary
R_pu = (I₁*R₀₁)/E₁
This formula uses 4 Variables

Variables Used

P U Primary Resistance drop - P U Primary Resistance drop is defined as the resistance drop at rated current and frequency expressed at rated voltage.
Primary Current - (Measured in Ampere) - Primary Current is the current which is flow in the primary winding of the transformer. The primary current of the transformer is dictated by the load current.
Equivalent Resistance from Primary - (Measured in Ohm) - The Equivalent Resistance from Primary side is the total resistance of the primary side.
EMF Induced in Primary - (Measured in Volt) - EMF Induced in Primary Winding is the production of voltage in a coil because of the change in magnetic flux through a coil.

STEP 1: Convert Input(s) to Base Unit

Primary Current: 12.6 Ampere --> 12.6 Ampere No Conversion Required
Equivalent Resistance from Primary: 35.97 Ohm --> 35.97 Ohm No Conversion Required
EMF Induced in Primary: 13.2 Volt --> 13.2 Volt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_pu = (I₁*R₀₁)/E₁ --> (12.6*35.97)/13.2

Evaluating ... ...

R_pu = 34.335

STEP 3: Convert Result to Output's Unit

34.335 --> No Conversion Required

FINAL ANSWER

34.335 <-- P U Primary Resistance drop

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Electrical » Machine » AC Machines » Transformer » Resistance » P.U. Primary Resistance Drop

Credits

Created by Jaffer Ahmad Khan

College Of Engineering, Pune (COEP), Pune

Jaffer Ahmad Khan has created this Calculator and 10+ more calculators!

Verified by Parminder Singh

Chandigarh University (CU), Punjab

Parminder Singh has verified this Calculator and 500+ more calculators!

< Resistance Calculators

Resistance of Primary in Secondary using Equivalent Resistance from Secondary Side

LaTeX Go Resistance of Primary in Secondary = Equivalent Resistance from Secondary-Resistance of Secondary in Primary

Equivalent Resistance of Transformer from Secondary Side

LaTeX Go Equivalent Resistance from Secondary = Resistance of Primary in Secondary+Resistance of Secondary

Resistance of Secondary in Primary using Equivalent Resistance from Primary Side

LaTeX Go Resistance of Secondary in Primary = Equivalent Resistance from Primary-Resistance of Primary

Equivalent Resistance of Transformer from Primary Side

LaTeX Go Equivalent Resistance from Primary = Resistance of Secondary in Primary+Resistance of Primary

< Transformer Circuit Calculators

Equivalent Reactance of Transformer from Secondary Side

LaTeX Go Equivalent Reactance from Secondary = Secondary Leakage Reactance+Reactance of Primary in Secondary

Equivalent Reactance of Transformer from Primary Side

LaTeX Go Equivalent Reactance from Primary = Primary Leakage Reactance+Reactance of Secondary in Primary

Primary Leakage Reactance

LaTeX Go Primary Leakage Reactance = Reactance of Primary in Secondary/(Transformation Ratio^2)

Reactance of Primary Winding in Secondary

LaTeX Go Reactance of Primary in Secondary = Primary Leakage Reactance*Transformation Ratio^2

P.U. Primary Resistance Drop Formula

LaTeX Go

P U Primary Resistance drop = (Primary Current*Equivalent Resistance from Primary)/EMF Induced in Primary
R_pu = (I₁*R₀₁)/E₁

What is per-unit resistance of transformer?

The per-unit impedance describes that percentage of the rated voltage required to produce full load current while the transformer output is shorted. The lower the impedance, the lower the voltage required to produce full load current.

How to Calculate P.U. Primary Resistance Drop?

P.U. Primary Resistance Drop calculator uses P U Primary Resistance drop = (Primary Current*Equivalent Resistance from Primary)/EMF Induced in Primary to calculate the P U Primary Resistance drop, P.U. Primary Resistance drop is defined as the resistance drop at rated current and frequency expressed at rated voltage. P U Primary Resistance drop is denoted by R_pu symbol.

How to calculate P.U. Primary Resistance Drop using this online calculator? To use this online calculator for P.U. Primary Resistance Drop, enter Primary Current (I₁), Equivalent Resistance from Primary (R₀₁) & EMF Induced in Primary (E₁) and hit the calculate button. Here is how the P.U. Primary Resistance Drop calculation can be explained with given input values -> 34.335 = (12.6*35.97)/13.2.

FAQ

What is P.U. Primary Resistance Drop?

P.U. Primary Resistance drop is defined as the resistance drop at rated current and frequency expressed at rated voltage and is represented as R_pu = (I₁*R₀₁)/E₁ or P U Primary Resistance drop = (Primary Current*Equivalent Resistance from Primary)/EMF Induced in Primary. Primary Current is the current which is flow in the primary winding of the transformer. The primary current of the transformer is dictated by the load current, The Equivalent Resistance from Primary side is the total resistance of the primary side & EMF Induced in Primary Winding is the production of voltage in a coil because of the change in magnetic flux through a coil.

How to calculate P.U. Primary Resistance Drop?

P.U. Primary Resistance drop is defined as the resistance drop at rated current and frequency expressed at rated voltage is calculated using P U Primary Resistance drop = (Primary Current*Equivalent Resistance from Primary)/EMF Induced in Primary. To calculate P.U. Primary Resistance Drop, you need Primary Current (I₁), Equivalent Resistance from Primary (R₀₁) & EMF Induced in Primary (E₁). With our tool, you need to enter the respective value for Primary Current, Equivalent Resistance from Primary & EMF Induced in Primary and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search