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Positive Sequence Current for L-G-F Formula

GoPositive Sequence Current using Fault Impedance(LGF) Formula

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

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Positive Sequence Current LG 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(lg) = \frac{V 1(lg) - E 1(lg)}{Z 1(lg)}

I_1(lg) - Positive Sequence Current LG?V_1(lg) - Positive Sequence Voltage LG?E_1(lg) - EMF Induced in Primary Winding LG?Z_1(lg) - Positive Sequence Impedance LG?

Positive Sequence Current for L-G-F Example

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Here is how the Positive Sequence Current for L-G-F equation looks like with Values.

Here is how the Positive Sequence Current for L-G-F equation looks like with Units.

Here is how the Positive Sequence Current for L-G-F equation looks like.

-0.3778 = \frac{17.5 - 20.5}{7.94}

-0.3778A = \frac{17.5V - 20.5V}{7.94Ω}

-0.3778 = \frac{17.5 - 20.5}{7.94}

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Positive Sequence Current for L-G-F Solution

Follow our step by step solution on how to calculate Positive Sequence Current for L-G-F?

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

I 1(lg) = \frac{17.5V - 20.5V}{7.94Ω}

Next Step Prepare to Evaluate

∴

I 1(lg) = \frac{17.5 - 20.5}{7.94}

Next Step Evaluate

∴

I 1(lg) = -0.377833753148615A

LAST Step Rounding Answer

∴

I 1(lg) = -0.3778A

Positive Sequence Current for L-G-F Formula Elements

Variables

Positive Sequence Current LG

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

Symbol: I_1(lg)

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Positive Sequence Current LG

Positive Sequence Voltage LG

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

Symbol: V_1(lg)

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Positive Sequence Voltage LG

EMF Induced in Primary Winding LG

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

Symbol: E_1(lg)

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find EMF Induced in Primary Winding LG

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.

Formulas to find Positive Sequence Impedance LG

Other Formulas to find Positive Sequence Current LG

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 Positive Sequence Current using A-Phase Current (LGF)

I 1(lg) = \frac{I a(lg)}{3}

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

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

Other formulas in Current category

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

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

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

How to Evaluate Positive Sequence Current for L-G-F?

Positive Sequence Current for L-G-F evaluator uses Positive Sequence Current LG = (Positive Sequence Voltage LG-EMF Induced in Primary Winding LG)/Positive Sequence Impedance LG to evaluate the Positive Sequence Current LG, The Positive Sequence Current for L-G-F formula consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ABC rotation. Positive Sequence Current LG is denoted by I_1(lg) symbol.

How to evaluate Positive Sequence Current for L-G-F using this online evaluator? To use this online evaluator for Positive Sequence Current for L-G-F, enter Positive Sequence Voltage LG (V_1(lg)), EMF Induced in Primary Winding LG (E_1(lg)) & Positive Sequence Impedance LG (Z_1(lg)) and hit the calculate button.

FAQs on Positive Sequence Current for L-G-F

What is the formula to find Positive Sequence Current for L-G-F?

The formula of Positive Sequence Current for L-G-F is expressed as Positive Sequence Current LG = (Positive Sequence Voltage LG-EMF Induced in Primary Winding LG)/Positive Sequence Impedance LG. Here is an example- -0.377834 = (17.5-20.5)/7.94.

How to calculate Positive Sequence Current for L-G-F?

With Positive Sequence Voltage LG (V_1(lg)), EMF Induced in Primary Winding LG (E_1(lg)) & Positive Sequence Impedance LG (Z_1(lg)) we can find Positive Sequence Current for L-G-F using the formula - Positive Sequence Current LG = (Positive Sequence Voltage LG-EMF Induced in Primary Winding LG)/Positive Sequence Impedance LG.

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

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

Positive Sequence Current LG=(Positive Sequence Voltage LG+Negative Sequence Voltage LG+Zero Sequence Voltage LG)/(3*Fault Impedance LG)
Positive Sequence Current LG=A-Phase Current LG/3
Positive Sequence Current LG=A Phase EMF LG/(Zero Sequence Impedance LG+Negative Sequence Impedance LG+Positive Sequence Impedance LG+(3*Fault Impedance LG))

Can the Positive Sequence Current for L-G-F be negative?

Yes, the Positive Sequence Current for L-G-F, measured in Electric Current can be negative.

Which unit is used to measure Positive Sequence Current for L-G-F?

Positive Sequence Current for L-G-F 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 for L-G-F can be measured.

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Positive Sequence Current for L-G-F Formula

​GoPositive Sequence Current using Fault Impedance(LGF) Formula

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

Positive Sequence Current for L-G-F Example

Positive Sequence Current for L-G-F Solution

Positive Sequence Current for L-G-F Formula Elements

Other Formulas to find Positive Sequence Current LG

Other formulas in Current category

How to Evaluate Positive Sequence Current for L-G-F?

FAQs on Positive Sequence Current for L-G-F

Variable Name

GoPositive Sequence Current using Fault Impedance(LGF) Formula

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