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

GoPositive Sequence Impedance for L-G-F Formula

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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. Check FAQs

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

Z_1(lg) - Positive Sequence Impedance LG?E_1(lg) - EMF Induced in Primary Winding LG?I_1(lg) - Positive Sequence Current LG?Z_f(lg) - Fault Impedance LG?Z_0(lg) - Zero Sequence Impedance LG?Z_2(lg) - Negative Sequence Impedance LG?

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

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

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

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

42.3449 = (\frac{20.5}{2.001}) - (3 \cdot 1.5) - 8 - -44.6

42.3449Ω = (\frac{20.5V}{2.001A}) - (3 \cdot 1.5Ω) - 8Ω - -44.6Ω

42.3449 = (\frac{20.5}{2.001}) - (3 \cdot 1.5) - 8 - -44.6

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

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

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

Z 1(lg) = (\frac{20.5V}{2.001A}) - (3 \cdot 1.5Ω) - 8Ω - -44.6Ω

Next Step Prepare to Evaluate

∴

Z 1(lg) = (\frac{20.5}{2.001}) - (3 \cdot 1.5) - 8 - -44.6

Next Step Evaluate

∴

Z 1(lg) = 42.3448775612194Ω

LAST Step Rounding Answer

∴

Z 1(lg) = 42.3449Ω

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

Variables

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

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 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

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

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

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

Other Formulas to find Positive Sequence Impedance LG

Go Positive Sequence Impedance for L-G-F

Z 1(lg) = \frac{E 1(lg) - V 1(lg)}{I 1(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 Zero Sequence Impedance using A-Phase EMF (LGF)

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

Go Fault Impedance given Sequence Voltages(LGF)

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

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

Positive Sequence Impedance using A-Phase EMF (LGF) evaluator uses Positive Sequence Impedance LG = (EMF Induced in Primary Winding LG/Positive Sequence Current LG)-(3*Fault Impedance LG)-Zero Sequence Impedance LG-Negative Sequence Impedance LG to evaluate the Positive Sequence Impedance LG, The Positive 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 ABC rotation. Positive Sequence Impedance LG is denoted by Z_1(lg) symbol.

How to evaluate Positive Sequence Impedance using A-Phase EMF (LGF) using this online evaluator? To use this online evaluator for Positive Sequence Impedance using A-Phase EMF (LGF), enter EMF Induced in Primary Winding LG (E_1(lg)), Positive Sequence Current LG (I_1(lg)), Fault Impedance LG (Z_f(lg)), Zero Sequence Impedance LG (Z_0(lg)) & Negative Sequence Impedance LG (Z_2(lg)) and hit the calculate button.

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

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

The formula of Positive Sequence Impedance using A-Phase EMF (LGF) is expressed as Positive Sequence Impedance LG = (EMF Induced in Primary Winding LG/Positive Sequence Current LG)-(3*Fault Impedance LG)-Zero Sequence Impedance LG-Negative Sequence Impedance LG. Here is an example- 42.34488 = (20.5/2.001)-(3*1.5)-8-(-44.6).

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

With EMF Induced in Primary Winding LG (E_1(lg)), Positive Sequence Current LG (I_1(lg)), Fault Impedance LG (Z_f(lg)), Zero Sequence Impedance LG (Z_0(lg)) & Negative Sequence Impedance LG (Z_2(lg)) we can find Positive Sequence Impedance using A-Phase EMF (LGF) using the formula - Positive Sequence Impedance LG = (EMF Induced in Primary Winding LG/Positive Sequence Current LG)-(3*Fault Impedance LG)-Zero Sequence Impedance LG-Negative Sequence Impedance LG.

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

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

Positive Sequence Impedance LG=(EMF Induced in Primary Winding LG-Positive Sequence Voltage LG)/Positive Sequence Current LG

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

No, the Positive Sequence Impedance using A-Phase EMF (LGF), measured in Electric Resistance cannot be negative.

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

Positive 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 Positive Sequence Impedance using A-Phase EMF (LGF) can be measured.

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

​GoPositive Sequence Impedance for L-G-F Formula

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

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

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

Other Formulas to find Positive Sequence Impedance LG

Other formulas in Impedance category

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

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

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GoPositive Sequence Impedance for L-G-F Formula