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B-Phase Current using A-Phase EMF(LLF) Formula

GoB-Phase Current (LLF) Formula

GoB-Phase Current using Fault Impedance (LLF) Formula

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B phase Current is defined as the current flowing through the b-phase in open conductor fault. Check FAQs

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

I_b - B Phase Current?E_a - A Phase EMF?Z₁ - Positive Sequence Impedance?Z₂ - Negative Sequence Impedance?

B-Phase Current using A-Phase EMF(LLF) Example

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Here is how the B-Phase Current using A-Phase EMF(LLF) equation looks like with Values.

Here is how the B-Phase Current using A-Phase EMF(LLF) equation looks like with Units.

Here is how the B-Phase Current using A-Phase EMF(LLF) equation looks like.

-1.3881 = \frac{\sqrt{3} \cdot 29.38}{7.94 + -44.6}

-1.3881A = \frac{\sqrt{3} \cdot 29.38V}{7.94Ω + -44.6Ω}

-1.3881 = \frac{\sqrt{3} \cdot 29.38}{7.94 + -44.6}

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B-Phase Current using A-Phase EMF(LLF) Solution

Follow our step by step solution on how to calculate B-Phase Current using A-Phase EMF(LLF)?

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

I b = \frac{\sqrt{3} \cdot 29.38V}{7.94Ω + -44.6Ω}

Next Step Prepare to Evaluate

∴

I b = \frac{\sqrt{3} \cdot 29.38}{7.94 + -44.6}

Next Step Evaluate

∴

I b = -1.38809745571123A

LAST Step Rounding Answer

∴

I b = -1.3881A

B-Phase Current using A-Phase EMF(LLF) Formula Elements

Variables

Functions

B Phase Current

B phase Current is defined as the current flowing through the b-phase in open conductor fault.

Symbol: I_b

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find B Phase Current

A Phase EMF

A phase EMF is defined as the electromagnetic force of the a-phase in open conductor fault.

Symbol: E_a

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find A Phase EMF

Positive Sequence Impedance

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

Symbol: Z₁

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Positive Sequence Impedance

Negative Sequence Impedance

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

Symbol: Z₂

Measurement: Electric ResistanceUnit: Ω

Note: Value can be positive or negative.

Formulas to find Negative Sequence Impedance

sqrt

A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number.

Syntax: sqrt(Number)

Other Formulas to find B Phase Current

Go B-Phase Current (LLF)

I b = (- 1) \cdot I c

Go B-Phase Current using Fault Impedance (LLF)

I b = \frac{V b - V c}{Z f}

Other formulas in Current category

Go C-Phase Current(LLF)

I c = (- 1) \cdot I b

Go Positive Sequence Current (LLF)

I 1 = (- 1) \cdot I 2

Go Negative Sequence Current(LLF)

I 2 = (- 1) \cdot I 1

Go Positive Sequence Current using Fault Impedance(LLF)

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

How to Evaluate B-Phase Current using A-Phase EMF(LLF)?

B-Phase Current using A-Phase EMF(LLF) evaluator uses B Phase Current = (sqrt(3)*A Phase EMF)/(Positive Sequence Impedance+Negative Sequence Impedance) to evaluate the B Phase Current, The B-phase Current using A-phase EMF(LLF) formula is defined the current flowing in the B phase of the system. B Phase Current is denoted by I_b symbol.

How to evaluate B-Phase Current using A-Phase EMF(LLF) using this online evaluator? To use this online evaluator for B-Phase Current using A-Phase EMF(LLF), enter A Phase EMF (E_a), Positive Sequence Impedance (Z₁) & Negative Sequence Impedance (Z₂) and hit the calculate button.

FAQs on B-Phase Current using A-Phase EMF(LLF)

What is the formula to find B-Phase Current using A-Phase EMF(LLF)?

The formula of B-Phase Current using A-Phase EMF(LLF) is expressed as B Phase Current = (sqrt(3)*A Phase EMF)/(Positive Sequence Impedance+Negative Sequence Impedance). Here is an example- 0.968551 = (sqrt(3)*29.38)/(7.94+(-44.6)).

How to calculate B-Phase Current using A-Phase EMF(LLF)?

With A Phase EMF (E_a), Positive Sequence Impedance (Z₁) & Negative Sequence Impedance (Z₂) we can find B-Phase Current using A-Phase EMF(LLF) using the formula - B Phase Current = (sqrt(3)*A Phase EMF)/(Positive Sequence Impedance+Negative Sequence Impedance). This formula also uses Square Root (sqrt) function(s).

What are the other ways to Calculate B Phase Current?

Here are the different ways to Calculate B Phase Current-

B Phase Current=(-1)*C Phase Current
B Phase Current=(B Phase Voltage-C Phase Voltage)/Fault Impedance

Can the B-Phase Current using A-Phase EMF(LLF) be negative?

Yes, the B-Phase Current using A-Phase EMF(LLF), measured in Electric Current can be negative.

Which unit is used to measure B-Phase Current using A-Phase EMF(LLF)?

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

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B-Phase Current using A-Phase EMF(LLF) Formula

​GoB-Phase Current (LLF) Formula

​GoB-Phase Current using Fault Impedance (LLF) Formula

B-Phase Current using A-Phase EMF(LLF) Example

B-Phase Current using A-Phase EMF(LLF) Solution

B-Phase Current using A-Phase EMF(LLF) Formula Elements

Other Formulas to find B Phase Current

Other formulas in Current category

How to Evaluate B-Phase Current using A-Phase EMF(LLF)?

FAQs on B-Phase Current using A-Phase EMF(LLF)

Variable Name

GoB-Phase Current (LLF) Formula

GoB-Phase Current using Fault Impedance (LLF) Formula