Fault Impedance using B-Phase Voltage (LLGF) Calculator

✖B phase Voltage is defined as the voltage of b-phase.ⓘ B Phase Voltage [V_b]			+10% -10%
✖Zero Sequence Current consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together.ⓘ Zero Sequence Current [I₀]			+10% -10%

✖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.ⓘ Fault Impedance using B-Phase Voltage (LLGF) [Z_f]

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Fault Impedance using B-Phase Voltage (LLGF) Solution

STEP 0: Pre-Calculation Summary

Formula Used

Fault Impedance = B Phase Voltage/(3*Zero Sequence Current)
Z_f = V_b/(3*I₀)
This formula uses 3 Variables

Variables Used

Fault Impedance - (Measured in Ohm) - 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.
B Phase Voltage - (Measured in Volt) - B phase Voltage is defined as the voltage of b-phase.
Zero Sequence Current - (Measured in Ampere) - Zero Sequence Current consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together.

STEP 1: Convert Input(s) to Base Unit

B Phase Voltage: 16.5 Volt --> 16.5 Volt No Conversion Required
Zero Sequence Current: 2.2 Ampere --> 2.2 Ampere No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Z_f = V_b/(3*I₀) --> 16.5/(3*2.2)

Evaluating ... ...

Z_f = 2.5

STEP 3: Convert Result to Output's Unit

2.5 Ohm --> No Conversion Required

FINAL ANSWER

2.5 Ohm <-- Fault Impedance

(Calculation completed in 00.004 seconds)

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< Impedance Calculators

Positive Sequence Impedance using A-Phase EMF(LLGF)

LaTeX Go Positive Sequence Impedance = (A Phase EMF-Positive Sequence Voltage)/Positive Sequence Current

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

LaTeX Go Fault Impedance = (Zero Sequence Voltage-Positive Sequence Voltage)/(3*Zero Sequence Current)

Negative Sequence Impedance(LLGF)

LaTeX Go Negative Sequence Impedance = -Negative Sequence Voltage/Negative Sequence Current

Zero Sequence Impedance(LLGF)

LaTeX Go Zero Sequence Impedance = -Zero Sequence Voltage/Zero Sequence Current

Fault Impedance using B-Phase Voltage (LLGF) Formula

LaTeX Go

Fault Impedance = B Phase Voltage/(3*Zero Sequence Current)
Z_f = V_b/(3*I₀)

What does three phase voltage mean?

Three-phase power can be defined as the common method of alternating current power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electric grids worldwide to transfer power.

What is fault impedance and current?

Fault Current for the double line to ground fault(LLGF) is defined as the current that flows into the fault Impedance and fault impedance is defined as the impedance which is connected to the earth.

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

Fault Impedance using B-Phase Voltage (LLGF) calculator uses Fault Impedance = B Phase Voltage/(3*Zero Sequence Current) to calculate 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 calculate Fault Impedance using B-Phase Voltage (LLGF) using this online calculator? To use this online calculator for Fault Impedance using B-Phase Voltage (LLGF), enter B Phase Voltage (V_b) & Zero Sequence Current (I₀) and hit the calculate button. Here is how the Fault Impedance using B-Phase Voltage (LLGF) calculation can be explained with given input values -> 1.848485 = 16.5/(3*2.2).

FAQ

What is Fault Impedance using B-Phase Voltage (LLGF)?

The Fault Impedance using b-phase Voltage (LLGF) formula is defined as the impedance which is connected to the earth and is represented as Z_f = V_b/(3*I₀) or Fault Impedance = B Phase Voltage/(3*Zero Sequence Current). B phase Voltage is defined as the voltage of b-phase & Zero Sequence Current consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together.

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

The Fault Impedance using b-phase Voltage (LLGF) formula is defined as the impedance which is connected to the earth is calculated using Fault Impedance = B Phase Voltage/(3*Zero Sequence Current). To calculate Fault Impedance using B-Phase Voltage (LLGF), you need B Phase Voltage (V_b) & Zero Sequence Current (I₀). With our tool, you need to enter the respective value for B Phase Voltage & Zero Sequence Current and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Fault Impedance?

In this formula, Fault Impedance uses B Phase Voltage & Zero Sequence Current. We can use 2 other way(s) to calculate the same, which is/are as follows -

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

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