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

GoNegative Sequence Impedance for L-G-F Formula

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

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

Z_2(lg) - Negative Sequence Impedance LG?E_1(lg) - EMF Induced in Primary Winding LG?I_2(lg) - Negative Sequence Current LG?Z_f(lg) - Fault Impedance LG?Z_1(lg) - Positive Sequence Impedance LG?Z_0(lg) - Zero Sequence Impedance LG?

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

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

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

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

-77.3844 = (\frac{20.5}{-0.36}) - (3 \cdot 1.5) - 7.94 - 8

-77.3844Ω = (\frac{20.5V}{-0.36A}) - (3 \cdot 1.5Ω) - 7.94Ω - 8Ω

-77.3844 = (\frac{20.5}{-0.36}) - (3 \cdot 1.5) - 7.94 - 8

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

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

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

Z 2(lg) = (\frac{20.5V}{-0.36A}) - (3 \cdot 1.5Ω) - 7.94Ω - 8Ω

Next Step Prepare to Evaluate

∴

Z 2(lg) = (\frac{20.5}{-0.36}) - (3 \cdot 1.5) - 7.94 - 8

Next Step Evaluate

∴

Z 2(lg) = -77.3844444444445Ω

LAST Step Rounding Answer

∴

Z 2(lg) = -77.3844Ω

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

Variables

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.

Formulas to find Negative Sequence Impedance 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

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.

Formulas to find Negative Sequence Current LG

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.

Formulas to find Fault Impedance 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

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.

Formulas to find Zero Sequence Impedance LG

Other Formulas to find Negative Sequence Impedance LG

Go Negative Sequence Impedance for L-G-F

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

Other formulas in Impedance category

Go Fault Impedance using A-Phase Voltage(LGF)

Z f(lg) = \frac{V a(lg)}{I a(lg)}

Go Zero Sequence Impedance for L-G-F

Z 0(lg) = (- 1) \cdot \frac{V 0(lg)}{I 0(lg)}

Go Positive Sequence Impedance for L-G-F

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

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

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

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

Negative Sequence Impedance using A-Phase EMF (LGF) evaluator uses Negative Sequence Impedance LG = (EMF Induced in Primary Winding LG/Negative Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Zero Sequence Impedance LG to evaluate the Negative Sequence Impedance LG, The Negative Sequence Impedance using a-phase EMF (LGF) formula is consists of balanced three-phase impedance phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ACB rotation. Negative Sequence Impedance LG is denoted by Z_2(lg) symbol.

How to evaluate Negative Sequence Impedance using A-Phase EMF (LGF) using this online evaluator? To use this online evaluator for Negative Sequence Impedance using A-Phase EMF (LGF), enter EMF Induced in Primary Winding LG (E_1(lg)), Negative Sequence Current LG (I_2(lg)), Fault Impedance LG (Z_f(lg)), Positive Sequence Impedance LG (Z_1(lg)) & Zero Sequence Impedance LG (Z_0(lg)) and hit the calculate button.

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

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

The formula of Negative Sequence Impedance using A-Phase EMF (LGF) is expressed as Negative Sequence Impedance LG = (EMF Induced in Primary Winding LG/Negative Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Zero Sequence Impedance LG. Here is an example- -77.384444 = (20.5/(-0.36))-(3*1.5)-7.94-8.

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

With EMF Induced in Primary Winding LG (E_1(lg)), Negative Sequence Current LG (I_2(lg)), Fault Impedance LG (Z_f(lg)), Positive Sequence Impedance LG (Z_1(lg)) & Zero Sequence Impedance LG (Z_0(lg)) we can find Negative Sequence Impedance using A-Phase EMF (LGF) using the formula - Negative Sequence Impedance LG = (EMF Induced in Primary Winding LG/Negative Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Zero Sequence Impedance LG.

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

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

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

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

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

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

Negative Sequence Impedance using A-Phase EMF (LGF) is usually measured using the Ohm[Ω] for Electric Resistance. Megohm[Ω], Microhm[Ω], Volt per Ampere[Ω] are the few other units in which Negative Sequence Impedance using A-Phase EMF (LGF) can be measured.

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

​GoNegative Sequence Impedance for L-G-F Formula

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

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

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

Other Formulas to find Negative Sequence Impedance LG

Other formulas in Impedance category

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

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

Variable Name

GoNegative Sequence Impedance for L-G-F Formula