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Positive Sequence Current (LLF) Formula

GoPositive Sequence Current using Fault Impedance(LLF) Formula

GoPositive Sequence Current using A-Phase EMF(LLF) Formula

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Positive Sequence Current consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation. Check FAQs

I 1 = (- 1) \cdot I 2

I₁ - Positive Sequence Current?I₂ - Negative Sequence Current?

Positive Sequence Current (LLF) Example

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With units

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Here is how the Positive Sequence Current (LLF) equation looks like with Values.

Here is how the Positive Sequence Current (LLF) equation looks like with Units.

Here is how the Positive Sequence Current (LLF) equation looks like.

0.36 = (- 1) \cdot -0.36

0.36A = (- 1) \cdot -0.36A

0.36 = (- 1) \cdot -0.36

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Positive Sequence Current (LLF) Solution

Follow our step by step solution on how to calculate Positive Sequence Current (LLF)?

FIRST Step Consider the formula

I 1 = (- 1) \cdot I 2

Next Step Substitute values of Variables

∴

I 1 = (- 1) \cdot -0.36A

Next Step Prepare to Evaluate

∴

I 1 = (- 1) \cdot -0.36

LAST Step Evaluate

∴

I 1 = 0.36A

Positive Sequence Current (LLF) Formula Elements

Variables

Positive Sequence Current

Positive Sequence Current consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.

Symbol: I₁

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Positive Sequence Current

Negative Sequence Current

Negative Sequence Current consists of balanced three-phase current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.

Symbol: I₂

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Negative Sequence Current

Other Formulas to find Positive Sequence Current

Go Positive Sequence Current using Fault Impedance(LLF)

I 1 = \frac{V 1 - V 2}{Z f}

Go Positive Sequence Current using A-Phase EMF(LLF)

I 1 = \frac{E a}{Z 1 + Z 2 + Z f}

Other formulas in Current category

Go B-Phase Current (LLF)

I b = (- 1) \cdot I c

Go C-Phase Current(LLF)

I c = (- 1) \cdot I b

Go Negative Sequence Current(LLF)

I 2 = (- 1) \cdot I 1

Go Fault Current(LLF)

I f = \frac{\sqrt{3} \cdot E a}{Z 1 + Z 2}

How to Evaluate Positive Sequence Current (LLF)?

Positive Sequence Current (LLF) evaluator uses Positive Sequence Current = (-1)*Negative Sequence Current to evaluate the Positive Sequence Current, The Positive Sequence Current (LLF) formula is defined as consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ABC rotation. Positive Sequence Current is denoted by I₁ symbol.

How to evaluate Positive Sequence Current (LLF) using this online evaluator? To use this online evaluator for Positive Sequence Current (LLF), enter Negative Sequence Current (I₂) and hit the calculate button.

FAQs on Positive Sequence Current (LLF)

What is the formula to find Positive Sequence Current (LLF)?

The formula of Positive Sequence Current (LLF) is expressed as Positive Sequence Current = (-1)*Negative Sequence Current. Here is an example- 0.36 = (-1)*(-0.36).

How to calculate Positive Sequence Current (LLF)?

With Negative Sequence Current (I₂) we can find Positive Sequence Current (LLF) using the formula - Positive Sequence Current = (-1)*Negative Sequence Current.

What are the other ways to Calculate Positive Sequence Current?

Here are the different ways to Calculate Positive Sequence Current-

Positive Sequence Current=(Positive Sequence Voltage-Negative Sequence Voltage)/Fault Impedance
Positive Sequence Current=A Phase EMF/(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance)

Can the Positive Sequence Current (LLF) be negative?

Yes, the Positive Sequence Current (LLF), measured in Electric Current can be negative.

Which unit is used to measure Positive Sequence Current (LLF)?

Positive Sequence Current (LLF) is usually measured using the Ampere[A] for Electric Current. Milliampere[A], Microampere[A], Centiampere[A] are the few other units in which Positive Sequence Current (LLF) can be measured.

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