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

GoZero Sequence Impedance for L-G-F Formula

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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. Check FAQs

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

Z_0(lg) - Zero Sequence Impedance LG?E_1(lg) - EMF Induced in Primary Winding LG?I_0(lg) - Zero Sequence Current LG?Z_f(lg) - Fault Impedance LG?Z_1(lg) - Positive Sequence Impedance LG?Z_2(lg) - Negative Sequence Impedance LG?

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

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

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

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

41.4782 = (\frac{20.5}{2.2}) - (3 \cdot 1.5) - 7.94 - -44.6

41.4782Ω = (\frac{20.5V}{2.2A}) - (3 \cdot 1.5Ω) - 7.94Ω - -44.6Ω

41.4782 = (\frac{20.5}{2.2}) - (3 \cdot 1.5) - 7.94 - -44.6

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

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

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

Z 0(lg) = (\frac{20.5V}{2.2A}) - (3 \cdot 1.5Ω) - 7.94Ω - -44.6Ω

Next Step Prepare to Evaluate

∴

Z 0(lg) = (\frac{20.5}{2.2}) - (3 \cdot 1.5) - 7.94 - -44.6

Next Step Evaluate

∴

Z 0(lg) = 41.4781818181818Ω

LAST Step Rounding Answer

∴

Z 0(lg) = 41.4782Ω

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

Variables

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

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

Zero Sequence Current LG

Zero Sequence Current LG consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together.

Symbol: I_0(lg)

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Zero 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

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 Zero Sequence Impedance LG

Go Zero Sequence Impedance for L-G-F

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

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 Zero Sequence Impedance using A-Phase EMF (LGF)?

Zero Sequence Impedance using A-Phase EMF (LGF) evaluator uses Zero Sequence Impedance LG = (EMF Induced in Primary Winding LG/Zero Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Negative Sequence Impedance LG to evaluate the Zero Sequence Impedance LG, The Zero Sequence Impedance using a-phase EMF (LGF) formula is consists of balanced three-phase impedance phasors of which all have the same phase angles and rotate counterclockwise together. Zero Sequence Impedance LG is denoted by Z_0(lg) symbol.

How to evaluate Zero Sequence Impedance using A-Phase EMF (LGF) using this online evaluator? To use this online evaluator for Zero Sequence Impedance using A-Phase EMF (LGF), enter EMF Induced in Primary Winding LG (E_1(lg)), Zero Sequence Current LG (I_0(lg)), Fault Impedance LG (Z_f(lg)), Positive Sequence Impedance LG (Z_1(lg)) & Negative Sequence Impedance LG (Z_2(lg)) and hit the calculate button.

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

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

The formula of Zero Sequence Impedance using A-Phase EMF (LGF) is expressed as Zero Sequence Impedance LG = (EMF Induced in Primary Winding LG/Zero Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Negative Sequence Impedance LG. Here is an example- 41.47818 = (20.5/2.2)-(3*1.5)-7.94-(-44.6).

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

With EMF Induced in Primary Winding LG (E_1(lg)), Zero Sequence Current LG (I_0(lg)), Fault Impedance LG (Z_f(lg)), Positive Sequence Impedance LG (Z_1(lg)) & Negative Sequence Impedance LG (Z_2(lg)) we can find Zero Sequence Impedance using A-Phase EMF (LGF) using the formula - Zero Sequence Impedance LG = (EMF Induced in Primary Winding LG/Zero Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Negative Sequence Impedance LG.

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

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

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

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

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

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

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

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

​GoZero Sequence Impedance for L-G-F Formula

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

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

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

Other Formulas to find Zero Sequence Impedance LG

Other formulas in Impedance category

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

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

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GoZero Sequence Impedance for L-G-F Formula