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Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) Formula

GoZero Sequence Current using B-Phase Voltage (LLGF) Formula

GoZero Sequence Current using C-Phase Voltage (LLGF) Formula

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

I 0 = \frac{V 0 - V 1}{3 \cdot Z f}

I₀ - Zero Sequence Current?V₀ - Zero Sequence Voltage?V₁ - Positive Sequence Voltage?Z_f - Fault Impedance?

Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) Example

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Here is how the Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) equation looks like with Values.

Here is how the Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) equation looks like with Units.

Here is how the Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) equation looks like.

0.0222 = \frac{17.6 - 17.5}{3 \cdot 1.5}

0.0222A = \frac{17.6V - 17.5V}{3 \cdot 1.5Ω}

0.0222 = \frac{17.6 - 17.5}{3 \cdot 1.5}

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Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) Solution

Follow our step by step solution on how to calculate Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF)?

FIRST Step Consider the formula

I 0 = \frac{V 0 - V 1}{3 \cdot Z f}

Next Step Substitute values of Variables

∴

I 0 = \frac{17.6V - 17.5V}{3 \cdot 1.5Ω}

Next Step Prepare to Evaluate

∴

I 0 = \frac{17.6 - 17.5}{3 \cdot 1.5}

Next Step Evaluate

∴

I 0 = 0.0222222222222225A

LAST Step Rounding Answer

∴

I 0 = 0.0222A

Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) Formula Elements

Variables

Zero Sequence Current

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

Symbol: I₀

Measurement: Electric CurrentUnit: A

Note: Value can be positive or negative.

Formulas to find Zero Sequence Current

Zero Sequence Voltage

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

Symbol: V₀

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Zero Sequence Voltage

Positive Sequence Voltage

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

Symbol: V₁

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Positive Sequence Voltage

Fault Impedance

Fault Impedance 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

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Fault Impedance

Other Formulas to find Zero Sequence Current

Go Zero Sequence Current using B-Phase Voltage (LLGF)

I 0 = \frac{V b}{3 \cdot Z f}

Go Zero Sequence Current using C-Phase Voltage (LLGF)

I 0 = \frac{V c}{3 \cdot Z f}

Go Zero Sequence Current using Zero Sequence Voltage (LLGF)

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

Go Zero Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF)

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

Other formulas in Current category

Go B-Phase Current (LLGF)

I b = I f - I c

Go C-Phase Current (LLGF)

I c = I f - I b

Go Fault Current (LLGF)

I f = I b + I c

Go Fault Current using B-Phase Voltage (LLGF)

I f = \frac{V b}{Z f}

How to Evaluate Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF)?

Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) evaluator uses Zero Sequence Current = (Zero Sequence Voltage-Positive Sequence Voltage)/(3*Fault Impedance) to evaluate the Zero Sequence Current, The Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) formula is defined as balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ACB rotation. Zero Sequence Current is denoted by I₀ symbol.

How to evaluate Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) using this online evaluator? To use this online evaluator for Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF), enter Zero Sequence Voltage (V₀), Positive Sequence Voltage (V₁) & Fault Impedance (Z_f) and hit the calculate button.

FAQs on Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF)

What is the formula to find Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF)?

The formula of Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) is expressed as Zero Sequence Current = (Zero Sequence Voltage-Positive Sequence Voltage)/(3*Fault Impedance). Here is an example- 0.911111 = (17.6-17.5)/(3*1.5).

How to calculate Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF)?

With Zero Sequence Voltage (V₀), Positive Sequence Voltage (V₁) & Fault Impedance (Z_f) we can find Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) using the formula - Zero Sequence Current = (Zero Sequence Voltage-Positive Sequence Voltage)/(3*Fault Impedance).

What are the other ways to Calculate Zero Sequence Current?

Here are the different ways to Calculate Zero Sequence Current-

Zero Sequence Current=B Phase Voltage/(3*Fault Impedance)
Zero Sequence Current=C Phase Voltage/(3*Fault Impedance)
Zero Sequence Current=(-1)*Zero Sequence Voltage/Zero Sequence Impedance

Can the Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) be negative?

Yes, the Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF), measured in Electric Current can be negative.

Which unit is used to measure Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF)?

Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) is usually measured using the Ampere[A] for Electric Current. Milliampere[A], Microampere[A], Centiampere[A] are the few other units in which Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF) can be measured.

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