Zero Sequence Current using A-Phase EMF (LGF) Calculator

✖EMF Induced in Primary Winding LG is the production of voltage in a coil because of the change in magnetic flux through a coil.ⓘ EMF Induced in Primary Winding LG [E_1(lg)]			+10% -10%
✖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.ⓘ Zero Sequence Impedance LG [Z_0(lg)]			+10% -10%
✖Negative Sequence Impedance LG consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.ⓘ Negative Sequence Impedance LG [Z_2(lg)]			+10% -10%
✖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.ⓘ Positive Sequence Impedance LG [Z_1(lg)]			+10% -10%
✖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.ⓘ Fault Impedance LG [Z_f(lg)]			+10% -10%

✖Zero Sequence Current LG consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together.ⓘ Zero Sequence Current using A-Phase EMF (LGF) [I_0(lg)]

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

STEP 0: Pre-Calculation Summary

Formula Used

Zero Sequence Current LG = EMF Induced in Primary Winding LG/(Zero Sequence Impedance LG+Negative Sequence Impedance LG+Positive Sequence Impedance LG+(3*Fault Impedance LG))
I_0(lg) = E_1(lg)/(Z_0(lg)+Z_2(lg)+Z_1(lg)+(3*Z_f(lg)))
This formula uses 6 Variables

Variables Used

Zero Sequence Current LG - (Measured in Ampere) - Zero Sequence Current LG consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together.
EMF Induced in Primary Winding LG - (Measured in Volt) - EMF Induced in Primary Winding LG is the production of voltage in a coil because of the change in magnetic flux through a coil.
Zero Sequence Impedance LG - (Measured in Ohm) - 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.
Negative Sequence Impedance LG - (Measured in Ohm) - Negative Sequence Impedance LG consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.
Positive Sequence Impedance LG - (Measured in Ohm) - 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.
Fault Impedance LG - (Measured in Ohm) - 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.

STEP 1: Convert Input(s) to Base Unit

EMF Induced in Primary Winding LG: 20.5 Volt --> 20.5 Volt No Conversion Required
Zero Sequence Impedance LG: 8 Ohm --> 8 Ohm No Conversion Required
Negative Sequence Impedance LG: -44.6 Ohm --> -44.6 Ohm No Conversion Required
Positive Sequence Impedance LG: 7.94 Ohm --> 7.94 Ohm No Conversion Required
Fault Impedance LG: 1.5 Ohm --> 1.5 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_0(lg) = E_1(lg)/(Z_0(lg)+Z_2(lg)+Z_1(lg)+(3*Z_f(lg))) --> 20.5/(8+(-44.6)+7.94+(3*1.5))

Evaluating ... ...

I_0(lg) = -0.848509933774834

STEP 3: Convert Result to Output's Unit

-0.848509933774834 Ampere --> No Conversion Required

FINAL ANSWER

-0.848509933774834 ≈ -0.84851 Ampere <-- Zero Sequence Current LG

(Calculation completed in 00.004 seconds)

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Home » Engineering » Electrical » Power System » Fault » Shunt Faults » Unsymmetrical Faults » L G Fault » Current » Zero Sequence Current using A-Phase EMF (LGF)

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< Current Calculators

Positive Sequence Current using Fault Impedance(LGF)

LaTeX Go Positive Sequence Current LG = (Positive Sequence Voltage LG+Negative Sequence Voltage LG+Zero Sequence Voltage LG)/(3*Fault Impedance LG)

A-Phase Current using Positive Sequence Current (LGF)

LaTeX Go A-Phase Current LG = Positive Sequence Current LG*3

A-Phase Current using Negative Sequence Current (LGF)

LaTeX Go A-Phase Current LG = 3*Negative Sequence Current LG

A-Phase Current using Zero Sequence Current (LGF)

LaTeX Go A-Phase Current LG = Zero Sequence Current LG*3

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

LaTeX Go

What are the positive and negative Sequence Components?

The positive sequence consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ABC rotation. The negative sequence consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ACB rotation.

How to Calculate Zero Sequence Current using A-Phase EMF (LGF)?

Zero Sequence Current using A-Phase EMF (LGF) calculator uses Zero Sequence Current LG = EMF Induced in Primary Winding LG/(Zero Sequence Impedance LG+Negative Sequence Impedance LG+Positive Sequence Impedance LG+(3*Fault Impedance LG)) to calculate the Zero Sequence Current LG, The Zero Sequence Current using a-phase EMF (LGF) formula is consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together. Zero Sequence Current LG is denoted by I_0(lg) symbol.

How to calculate Zero Sequence Current using A-Phase EMF (LGF) using this online calculator? To use this online calculator for Zero Sequence Current using A-Phase EMF (LGF), enter EMF Induced in Primary Winding LG (E_1(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. Here is how the Zero Sequence Current using A-Phase EMF (LGF) calculation can be explained with given input values -> -0.84851 = 20.5/(8+(-44.6)+7.94+(3*1.5)).

FAQ

What is Zero Sequence Current using A-Phase EMF (LGF)?

The Zero Sequence Current using a-phase EMF (LGF) formula is consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together and is represented as I_0(lg) = E_1(lg)/(Z_0(lg)+Z_2(lg)+Z_1(lg)+(3*Z_f(lg))) or Zero Sequence Current LG = EMF Induced in Primary Winding LG/(Zero Sequence Impedance LG+Negative Sequence Impedance LG+Positive Sequence Impedance LG+(3*Fault Impedance 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, 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, Negative Sequence Impedance LG consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation, 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 & 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.

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

The Zero Sequence Current using a-phase EMF (LGF) formula is consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together is calculated using Zero Sequence Current LG = EMF Induced in Primary Winding LG/(Zero Sequence Impedance LG+Negative Sequence Impedance LG+Positive Sequence Impedance LG+(3*Fault Impedance LG)). To calculate Zero Sequence Current using A-Phase EMF (LGF), you need EMF Induced in Primary Winding LG (E_1(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)). With our tool, you need to enter the respective value for EMF Induced in Primary Winding LG, Zero Sequence Impedance LG, Negative Sequence Impedance LG, Positive Sequence Impedance LG & Fault Impedance LG and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Zero Sequence Current LG?

In this formula, Zero Sequence Current LG uses EMF Induced in Primary Winding LG, Zero Sequence Impedance LG, Negative Sequence Impedance LG, Positive Sequence Impedance LG & Fault Impedance LG. We can use 2 other way(s) to calculate the same, which is/are as follows -

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

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