Fault Impedance using Positive Sequence Current Calculator

✖Positive Sequence Voltage Line is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Voltage Line [V_1(line)]			+10% -10%
✖Negative Sequence Voltage Line is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.ⓘ Negative Sequence Voltage Line [V_2(line)]			+10% -10%
✖Zero Sequence Voltage Line is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counterclockwise together.ⓘ Zero Sequence Voltage Line [V_0(line)]			+10% -10%
✖Positive Sequence Current Line is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Current Line [I_1(line)]			+10% -10%

✖Fault Impedance Line is defined as the impedance that caused the fault.ⓘ Fault Impedance using Positive Sequence Current [Z_f(line)]

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Fault Impedance using Positive Sequence Current Solution

STEP 0: Pre-Calculation Summary

Formula Used

Fault Impedance Line = (Positive Sequence Voltage Line+Negative Sequence Voltage Line+Zero Sequence Voltage Line)/(3*Positive Sequence Current Line)
Z_f(line) = (V_1(line)+V_2(line)+V_0(line))/(3*I_1(line))
This formula uses 5 Variables

Variables Used

Fault Impedance Line - (Measured in Ohm) - Fault Impedance Line is defined as the impedance that caused the fault.
Positive Sequence Voltage Line - (Measured in Volt) - Positive Sequence Voltage Line is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.
Negative Sequence Voltage Line - (Measured in Volt) - Negative Sequence Voltage Line is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.
Zero Sequence Voltage Line - (Measured in Volt) - Zero Sequence Voltage Line is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counterclockwise together.
Positive Sequence Current Line - (Measured in Ampere) - Positive Sequence Current Line is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.

STEP 1: Convert Input(s) to Base Unit

Positive Sequence Voltage Line: 13.51 Volt --> 13.51 Volt No Conversion Required
Negative Sequence Voltage Line: 16.056 Volt --> 16.056 Volt No Conversion Required
Zero Sequence Voltage Line: 17.5 Volt --> 17.5 Volt No Conversion Required
Positive Sequence Current Line: 2.0011 Ampere --> 2.0011 Ampere No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Z_f(line) = (V_1(line)+V_2(line)+V_0(line))/(3*I_1(line)) --> (13.51+16.056+17.5)/(3*2.0011)

Evaluating ... ...

Z_f(line) = 7.84002132160645

STEP 3: Convert Result to Output's Unit

7.84002132160645 Ohm --> No Conversion Required

FINAL ANSWER

7.84002132160645 ≈ 7.840021 Ohm <-- Fault Impedance Line

(Calculation completed in 00.020 seconds)

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< Line Sequence Impedance Calculators

Positive Sequence Impedance for Delta Connected Load

LaTeX Go Positive Sequence Impedance Line = Positive Sequence Voltage Line/Positive Sequence Current Line

Negative Sequence Impedance for Delta Connected Load

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

Zero Sequence Impedance for Delta Connected Load

LaTeX Go Zero Sequence Impedance Delta Line = Zero Sequence Voltage Line/Zero Sequence Current Line

Zero Sequence Impedance for Star Connected Load

LaTeX Go Zero Sequence Impedance Star Line = Sequence Impedance Line+(3*Fault Impedance Line)

Fault Impedance using Positive Sequence Current Formula

LaTeX Go

What are the Sequence Components?

The positive sequence consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ABC rotation. The negative sequence consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ACB rotation. Zero sequence consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counterclockwise together.

How to Calculate Fault Impedance using Positive Sequence Current?

Fault Impedance using Positive Sequence Current calculator uses Fault Impedance Line = (Positive Sequence Voltage Line+Negative Sequence Voltage Line+Zero Sequence Voltage Line)/(3*Positive Sequence Current Line) to calculate the Fault Impedance Line, The Fault impedance using positive Sequence current formula is defined as the impedance which is connected to the earth. Fault Impedance Line is denoted by Z_f(line) symbol.

How to calculate Fault Impedance using Positive Sequence Current using this online calculator? To use this online calculator for Fault Impedance using Positive Sequence Current, enter Positive Sequence Voltage Line (V_1(line)), Negative Sequence Voltage Line (V_2(line)), Zero Sequence Voltage Line (V_0(line)) & Positive Sequence Current Line (I_1(line)) and hit the calculate button. Here is how the Fault Impedance using Positive Sequence Current calculation can be explained with given input values -> 7.840021 = (13.51+16.056+17.5)/(3*2.0011).

FAQ

What is Fault Impedance using Positive Sequence Current?

The Fault impedance using positive Sequence current formula is defined as the impedance which is connected to the earth and is represented as Z_f(line) = (V_1(line)+V_2(line)+V_0(line))/(3*I_1(line)) or Fault Impedance Line = (Positive Sequence Voltage Line+Negative Sequence Voltage Line+Zero Sequence Voltage Line)/(3*Positive Sequence Current Line). Positive Sequence Voltage Line is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation, Negative Sequence Voltage Line is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation, Zero Sequence Voltage Line is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counterclockwise together & Positive Sequence Current Line is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.

How to calculate Fault Impedance using Positive Sequence Current?

The Fault impedance using positive Sequence current formula is defined as the impedance which is connected to the earth is calculated using Fault Impedance Line = (Positive Sequence Voltage Line+Negative Sequence Voltage Line+Zero Sequence Voltage Line)/(3*Positive Sequence Current Line). To calculate Fault Impedance using Positive Sequence Current, you need Positive Sequence Voltage Line (V_1(line)), Negative Sequence Voltage Line (V_2(line)), Zero Sequence Voltage Line (V_0(line)) & Positive Sequence Current Line (I_1(line)). With our tool, you need to enter the respective value for Positive Sequence Voltage Line, Negative Sequence Voltage Line, Zero Sequence Voltage Line & Positive Sequence Current Line 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 Line?

In this formula, Fault Impedance Line uses Positive Sequence Voltage Line, Negative Sequence Voltage Line, Zero Sequence Voltage Line & Positive Sequence Current Line. We can use 1 other way(s) to calculate the same, which is/are as follows -

Fault Impedance Line = (Positive Sequence Voltage Line+Negative Sequence Voltage Line+Zero Sequence Voltage Line)/A-Phase Current Line

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