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P.U. Primary Resistance Drop Formula

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P U Primary Resistance drop is defined as the resistance drop at rated current and frequency expressed at rated voltage. Check FAQs

R pu = \frac{I 1 \cdot R 01}{E 1}

R_pu - P U Primary Resistance drop?I₁ - Primary Current?R₀₁ - Equivalent Resistance from Primary?E₁ - EMF Induced in Primary?

P.U. Primary Resistance Drop Example

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Here is how the P.U. Primary Resistance Drop equation looks like with Values.

Here is how the P.U. Primary Resistance Drop equation looks like with Units.

Here is how the P.U. Primary Resistance Drop equation looks like.

34.335 = \frac{12.6 \cdot 35.97}{13.2}

34.335 = \frac{12.6A \cdot 35.97Ω}{13.2V}

34.335 = \frac{12.6 \cdot 35.97}{13.2}

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P.U. Primary Resistance Drop Solution

Follow our step by step solution on how to calculate P.U. Primary Resistance Drop?

FIRST Step Consider the formula

R pu = \frac{I 1 \cdot R 01}{E 1}

Next Step Substitute values of Variables

∴

R pu = \frac{12.6A \cdot 35.97Ω}{13.2V}

Next Step Prepare to Evaluate

∴

R pu = \frac{12.6 \cdot 35.97}{13.2}

LAST Step Evaluate

∴

R pu = 34.335

P.U. Primary Resistance Drop Formula Elements

Variables

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.

Symbol: R_pu

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find P U Primary Resistance drop

Primary Current

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.

Symbol: I₁

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Primary Current

Equivalent Resistance from Primary

The Equivalent Resistance from Primary side is the total resistance of the primary side.

Symbol: R₀₁

Measurement: Electric ResistanceUnit: Ω

Note: Value can be positive or negative.

Formulas to find Equivalent Resistance from Primary

EMF Induced in Primary

EMF Induced in Primary Winding is the production of voltage in a coil because of the change in magnetic flux through a coil.

Symbol: E₁

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find EMF Induced in Primary

Other formulas in Resistance category

Go Equivalent Reactance of Transformer from Primary Side

X 01 = X L1 + X' 2

Go Equivalent Reactance of Transformer from Secondary Side

X 02 = X L2 + X' 1

Go Primary Leakage Reactance

X L1 = \frac{X' 1}{K^{2}}

Go Reactance of Primary Winding in Secondary

X' 1 = X L1 \cdot K^{2}

How to Evaluate P.U. Primary Resistance Drop?

P.U. Primary Resistance Drop evaluator uses P U Primary Resistance drop = (Primary Current*Equivalent Resistance from Primary)/EMF Induced in Primary to evaluate 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 evaluate P.U. Primary Resistance Drop using this online evaluator? To use this online evaluator 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.

FAQs on P.U. Primary Resistance Drop

What is the formula to find P.U. Primary Resistance Drop?

The formula of P.U. Primary Resistance Drop is expressed as P U Primary Resistance drop = (Primary Current*Equivalent Resistance from Primary)/EMF Induced in Primary. Here is an example- 34.335 = (12.6*35.97)/13.2.

How to calculate P.U. Primary Resistance Drop?

With Primary Current (I₁), Equivalent Resistance from Primary (R₀₁) & EMF Induced in Primary (E₁) we can find P.U. Primary Resistance Drop using the formula - P U Primary Resistance drop = (Primary Current*Equivalent Resistance from Primary)/EMF Induced in Primary.

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P.U. Primary Resistance Drop Formula

P.U. Primary Resistance Drop Example

P.U. Primary Resistance Drop Solution

P.U. Primary Resistance Drop Formula Elements

Other formulas in Resistance category

How to Evaluate P.U. Primary Resistance Drop?

FAQs on P.U. Primary Resistance Drop

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