FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Fault Impedance using B-Phase Voltage (LLGF) Formula

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

GoFault Impedance using C-Phase Voltage (LLGF) Formula

Fx Copy

LaTeX Copy

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. Check FAQs

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

Z_f - Fault Impedance?V_b - B Phase Voltage?I₀ - Zero Sequence Current?

Fault Impedance using B-Phase Voltage (LLGF) Example

With values

With units

Only example

Here is how the Fault Impedance using B-Phase Voltage (LLGF) equation looks like with Values.

Here is how the Fault Impedance using B-Phase Voltage (LLGF) equation looks like with Units.

Here is how the Fault Impedance using B-Phase Voltage (LLGF) equation looks like.

2.5 = \frac{16.5}{3 \cdot 2.2}

2.5Ω = \frac{16.5V}{3 \cdot 2.2A}

2.5 = \frac{16.5}{3 \cdot 2.2}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Electrical » Category

Power System » fx Fault Impedance using B-Phase Voltage (LLGF)

Fault Impedance using B-Phase Voltage (LLGF) Solution

Follow our step by step solution on how to calculate Fault Impedance using B-Phase Voltage (LLGF)?

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

Z f = \frac{16.5V}{3 \cdot 2.2A}

Next Step Prepare to Evaluate

∴

Z f = \frac{16.5}{3 \cdot 2.2}

LAST Step Evaluate

∴

Z f = 2.5Ω

Fault Impedance using B-Phase Voltage (LLGF) Formula Elements

Variables

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

B Phase Voltage

B phase Voltage is defined as the voltage of b-phase.

Symbol: V_b

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find B Phase Voltage

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

Other Formulas to find Fault Impedance

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

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

Go Fault Impedance using C-Phase Voltage (LLGF)

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

Other formulas in Impedance category

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

Z 1 = \frac{E a - V 1}{I 1}

Go Zero Sequence Impedance(LLGF)

Z 0 = - \frac{V 0}{I 0}

Go Negative Sequence Impedance(LLGF)

Z 2 = - \frac{V 2}{I 2}

How to Evaluate Fault Impedance using B-Phase Voltage (LLGF)?

Fault Impedance using B-Phase Voltage (LLGF) evaluator uses Fault Impedance = B Phase Voltage/(3*Zero Sequence Current) to evaluate the Fault Impedance, The Fault Impedance using b-phase Voltage (LLGF) formula is defined as the impedance which is connected to the earth. Fault Impedance is denoted by Z_f symbol.

How to evaluate Fault Impedance using B-Phase Voltage (LLGF) using this online evaluator? To use this online evaluator for Fault Impedance using B-Phase Voltage (LLGF), enter B Phase Voltage (V_b) & Zero Sequence Current (I₀) and hit the calculate button.

FAQs on Fault Impedance using B-Phase Voltage (LLGF)

What is the formula to find Fault Impedance using B-Phase Voltage (LLGF)?

The formula of Fault Impedance using B-Phase Voltage (LLGF) is expressed as Fault Impedance = B Phase Voltage/(3*Zero Sequence Current). Here is an example- 1.848485 = 16.5/(3*2.2).

How to calculate Fault Impedance using B-Phase Voltage (LLGF)?

With B Phase Voltage (V_b) & Zero Sequence Current (I₀) we can find Fault Impedance using B-Phase Voltage (LLGF) using the formula - Fault Impedance = B Phase Voltage/(3*Zero Sequence Current).

What are the other ways to Calculate Fault Impedance?

Here are the different ways to Calculate Fault Impedance-

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

Can the Fault Impedance using B-Phase Voltage (LLGF) be negative?

No, the Fault Impedance using B-Phase Voltage (LLGF), measured in Electric Resistance cannot be negative.

Which unit is used to measure Fault Impedance using B-Phase Voltage (LLGF)?

Fault Impedance using B-Phase Voltage (LLGF) 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 Fault Impedance using B-Phase Voltage (LLGF) can be measured.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit