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Negative Sequence Current using A-Phase EMF (LGF) Formula

GoNegative Sequence Current using A-Phase Current (LGF) Formula

GoNegative Sequence Current for L-G-F Formula

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

I 2(lg) = \frac{E a(lg)}{Z 0(lg) + Z 2(lg) + Z 1(lg) + (3 \cdot Z f(lg))}

I_2(lg) - Negative Sequence Current LG?E_a(lg) - A Phase EMF LG?Z_0(lg) - Zero Sequence Impedance LG?Z_2(lg) - Negative Sequence Impedance LG?Z_1(lg) - Positive Sequence Impedance LG?Z_f(lg) - Fault Impedance LG?

Negative Sequence Current using A-Phase EMF (LGF) Example

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Here is how the Negative Sequence Current using A-Phase EMF (LGF) equation looks like with Values.

Here is how the Negative Sequence Current using A-Phase EMF (LGF) equation looks like with Units.

Here is how the Negative Sequence Current using A-Phase EMF (LGF) equation looks like.

-1.2161 = \frac{29.38}{8 + -44.6 + 7.94 + (3 \cdot 1.5)}

-1.2161A = \frac{29.38V}{8Ω + -44.6Ω + 7.94Ω + (3 \cdot 1.5Ω)}

-1.2161 = \frac{29.38}{8 + -44.6 + 7.94 + (3 \cdot 1.5)}

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Negative Sequence Current using A-Phase EMF (LGF) Solution

Follow our step by step solution on how to calculate Negative Sequence Current using A-Phase EMF (LGF)?

FIRST Step Consider the formula

I 2(lg) = \frac{E a(lg)}{Z 0(lg) + Z 2(lg) + Z 1(lg) + (3 \cdot Z f(lg))}

Next Step Substitute values of Variables

∴

I 2(lg) = \frac{29.38V}{8Ω + -44.6Ω + 7.94Ω + (3 \cdot 1.5Ω)}

Next Step Prepare to Evaluate

∴

I 2(lg) = \frac{29.38}{8 + -44.6 + 7.94 + (3 \cdot 1.5)}

Next Step Evaluate

∴

I 2(lg) = -1.21605960264901A

LAST Step Rounding Answer

∴

I 2(lg) = -1.2161A

Negative Sequence Current using A-Phase EMF (LGF) Formula Elements

Variables

Negative Sequence Current LG

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

Symbol: I_2(lg)

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

A Phase EMF LG

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

Symbol: E_a(lg)

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Zero Sequence Impedance LG

Zero Sequence Impedance LG consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together.

Symbol: Z_0(lg)

Measurement: Electric ResistanceUnit: Ω

Note: Value can be positive or negative.

Negative Sequence Impedance LG

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

Symbol: Z_2(lg)

Measurement: Electric ResistanceUnit: Ω

Note: Value can be positive or negative.

Positive Sequence Impedance LG

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

Symbol: Z_1(lg)

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Fault Impedance LG

Fault Impedance LG is a measure of the resistance and reactance in an electrical circuit that is used to calculate the fault current that flows through the circuit in the event of a fault.

Symbol: Z_f(lg)

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Credits

Created by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has created this Formula and 1500+ more formulas!

Verified by Payal Priya

Birsa Institute of Technology (BIT), Sindri

Payal Priya has verified this Formula and 1900+ more formulas!

Other Formulas to find Negative Sequence Current LG

Go Negative Sequence Current using A-Phase Current (LGF)

I 2(lg) = \frac{I a(lg)}{3}

Go Negative Sequence Current for L-G-F

I 2(lg) = (- 1) \cdot \frac{V 2(lg)}{Z 2(lg)}

Other formulas in Current category

Go Positive Sequence Current using Fault Impedance(LGF)

I 1(lg) = \frac{V 1(lg) + V 2(lg) + V 0(lg)}{3 \cdot Z f(lg)}

Go A-Phase Current using Positive Sequence Current (LGF)

I a(lg) = I 1(lg) \cdot 3

Go A-Phase Current using Negative Sequence Current (LGF)

I a(lg) = 3 \cdot I 2(lg)

Go A-Phase Current using Zero Sequence Current (LGF)

I a(lg) = I 0(lg) \cdot 3

How to Evaluate Negative Sequence Current using A-Phase EMF (LGF)?

Negative Sequence Current using A-Phase EMF (LGF) evaluator uses Negative Sequence Current LG = A Phase EMF LG/(Zero Sequence Impedance LG+Negative Sequence Impedance LG+Positive Sequence Impedance LG+(3*Fault Impedance LG)) to evaluate the Negative Sequence Current LG, The Negative Sequence Current using a-phase EMF (LGF) formula is consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ACB rotation. Negative Sequence Current LG is denoted by I_2(lg) symbol.

How to evaluate Negative Sequence Current using A-Phase EMF (LGF) using this online evaluator? To use this online evaluator for Negative Sequence Current using A-Phase EMF (LGF), enter A Phase EMF LG (E_a(lg)), Zero Sequence Impedance LG (Z_0(lg)), Negative Sequence Impedance LG (Z_2(lg)), Positive Sequence Impedance LG (Z_1(lg)) & Fault Impedance LG (Z_f(lg)) and hit the calculate button.

FAQs on Negative Sequence Current using A-Phase EMF (LGF)

What is the formula to find Negative Sequence Current using A-Phase EMF (LGF)?

The formula of Negative Sequence Current using A-Phase EMF (LGF) is expressed as Negative Sequence Current LG = A Phase EMF LG/(Zero Sequence Impedance LG+Negative Sequence Impedance LG+Positive Sequence Impedance LG+(3*Fault Impedance LG)). Here is an example- -1.21606 = 29.38/(8+(-44.6)+7.94+(3*1.5)).

How to calculate Negative Sequence Current using A-Phase EMF (LGF)?

With A Phase EMF LG (E_a(lg)), Zero Sequence Impedance LG (Z_0(lg)), Negative Sequence Impedance LG (Z_2(lg)), Positive Sequence Impedance LG (Z_1(lg)) & Fault Impedance LG (Z_f(lg)) we can find Negative Sequence Current using A-Phase EMF (LGF) using the formula - Negative Sequence Current LG = A Phase EMF LG/(Zero Sequence Impedance LG+Negative Sequence Impedance LG+Positive Sequence Impedance LG+(3*Fault Impedance LG)).

What are the other ways to Calculate Negative Sequence Current LG?

Here are the different ways to Calculate Negative Sequence Current LG-

Negative Sequence Current LG=A-Phase Current LG/3
Negative Sequence Current LG=(-1)*Negative Sequence Voltage LG/Negative Sequence Impedance LG

Can the Negative Sequence Current using A-Phase EMF (LGF) be negative?

Yes, the Negative Sequence Current using A-Phase EMF (LGF), measured in Electric Current can be negative.

Which unit is used to measure Negative Sequence Current using A-Phase EMF (LGF)?

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

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Negative Sequence Current using A-Phase EMF (LGF) Formula

​GoNegative Sequence Current using A-Phase Current (LGF) Formula

​GoNegative Sequence Current for L-G-F Formula

Negative Sequence Current using A-Phase EMF (LGF) Example

Negative Sequence Current using A-Phase EMF (LGF) Solution

Negative Sequence Current using A-Phase EMF (LGF) Formula Elements

Credits

Other Formulas to find Negative Sequence Current LG

Other formulas in Current category

How to Evaluate Negative Sequence Current using A-Phase EMF (LGF)?

FAQs on Negative Sequence Current using A-Phase EMF (LGF)

Variable Name

GoNegative Sequence Current using A-Phase Current (LGF) Formula

GoNegative Sequence Current for L-G-F Formula