Neutral Impedance for Star Connected Load using Zero Sequence Voltage Calculator

✖Zero Sequence Voltage Xmer 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 Xmer [V_0(xmer)]			+10% -10%
✖Zero Sequence Current Xmer is consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together.ⓘ Zero Sequence Current Xmer [I_0(xmer)]			+10% -10%
✖Star Impedance Xmer is defined as the impedance Of star connected network.ⓘ Star Impedance Xmer [Z_y(xmer)]			+10% -10%

✖Fault Impedance Xmer is defined as the impedance that caused the fault.ⓘ Neutral Impedance for Star Connected Load using Zero Sequence Voltage [Z_f(xmer)]

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Formula

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Neutral Impedance for Star Connected Load using Zero Sequence Voltage

Formula

Z f(xmer) = \frac{(\frac{V 0(xmer)}{I 0(xmer)}) - Z y(xmer)}{3}

Example

0.4076 Ω = \frac{(\frac{17.6 V}{2.21 A}) - 6.741 Ω}{3}

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Neutral Impedance for Star Connected Load using Zero Sequence Voltage Solution

STEP 0: Pre-Calculation Summary

Formula Used

Fault Impedance Xmer = ((Zero Sequence Voltage Xmer/Zero Sequence Current Xmer)-Star Impedance Xmer)/3
Z_f(xmer) = ((V_0(xmer)/I_0(xmer))-Z_y(xmer))/3
This formula uses 4 Variables

Variables Used

Fault Impedance Xmer - (Measured in Ohm) - Fault Impedance Xmer is defined as the impedance that caused the fault.
Zero Sequence Voltage Xmer - (Measured in Volt) - Zero Sequence Voltage Xmer 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 Current Xmer - (Measured in Ampere) - Zero Sequence Current Xmer is consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together.
Star Impedance Xmer - (Measured in Ohm) - Star Impedance Xmer is defined as the impedance Of star connected network.

STEP 1: Convert Input(s) to Base Unit

Zero Sequence Voltage Xmer: 17.6 Volt --> 17.6 Volt No Conversion Required
Zero Sequence Current Xmer: 2.21 Ampere --> 2.21 Ampere No Conversion Required
Star Impedance Xmer: 6.741 Ohm --> 6.741 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Z_f(xmer) = ((V_0(xmer)/I_0(xmer))-Z_y(xmer))/3 --> ((17.6/2.21)-6.741)/3

Evaluating ... ...

Z_f(xmer) = 0.407600301659126

STEP 3: Convert Result to Output's Unit

0.407600301659126 Ohm --> No Conversion Required

FINAL ANSWER

0.407600301659126 ≈ 0.4076 Ohm <-- Fault Impedance Xmer

(Calculation completed in 00.004 seconds)

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< Transformer Sequence Impedance Calculators

Leakage Impedance for Transformer given Zero Sequence Current

Go Leakage Impedance Xmer = (Zero Sequence Voltage Xmer/Zero Sequence Current Xmer)-3*Fault Impedance Xmer

Positive Sequence Impedance for Transformer

Go Positive Sequence Impedance Xmer = Positive Sequence Voltage Xmer/Positive Sequence Current Xmer

Leakage Impedance for Transformer given Positive Sequence Voltage

Go Leakage Impedance Xmer = Positive Sequence Voltage Xmer/Positive Sequence Current Xmer

Delta Impedance using Star Impedance

Go Delta Impedance Xmer = Star Impedance Xmer*3

Neutral Impedance for Star Connected Load using Zero Sequence Voltage Formula

Fault Impedance Xmer = ((Zero Sequence Voltage Xmer/Zero Sequence Current Xmer)-Star Impedance Xmer)/3
Z_f(xmer) = ((V_0(xmer)/I_0(xmer))-Z_y(xmer))/3

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 Neutral Impedance for Star Connected Load using Zero Sequence Voltage?

Neutral Impedance for Star Connected Load using Zero Sequence Voltage calculator uses Fault Impedance Xmer = ((Zero Sequence Voltage Xmer/Zero Sequence Current Xmer)-Star Impedance Xmer)/3 to calculate the Fault Impedance Xmer, The Neutral Impedance for Star Connected Load using Zero Sequence Voltage formula is defined as the impedance of neutral wire that is connected to the earth. Fault Impedance Xmer is denoted by Z_f(xmer) symbol.

How to calculate Neutral Impedance for Star Connected Load using Zero Sequence Voltage using this online calculator? To use this online calculator for Neutral Impedance for Star Connected Load using Zero Sequence Voltage, enter Zero Sequence Voltage Xmer (V_0(xmer)), Zero Sequence Current Xmer (I_0(xmer)) & Star Impedance Xmer (Z_y(xmer)) and hit the calculate button. Here is how the Neutral Impedance for Star Connected Load using Zero Sequence Voltage calculation can be explained with given input values -> 0.419667 = ((17.6/2.21)-6.741)/3.

FAQ

What is Neutral Impedance for Star Connected Load using Zero Sequence Voltage?

The Neutral Impedance for Star Connected Load using Zero Sequence Voltage formula is defined as the impedance of neutral wire that is connected to the earth and is represented as Z_f(xmer) = ((V_0(xmer)/I_0(xmer))-Z_y(xmer))/3 or Fault Impedance Xmer = ((Zero Sequence Voltage Xmer/Zero Sequence Current Xmer)-Star Impedance Xmer)/3. Zero Sequence Voltage Xmer 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 Current Xmer is consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together & Star Impedance Xmer is defined as the impedance Of star connected network.

How to calculate Neutral Impedance for Star Connected Load using Zero Sequence Voltage?

The Neutral Impedance for Star Connected Load using Zero Sequence Voltage formula is defined as the impedance of neutral wire that is connected to the earth is calculated using Fault Impedance Xmer = ((Zero Sequence Voltage Xmer/Zero Sequence Current Xmer)-Star Impedance Xmer)/3. To calculate Neutral Impedance for Star Connected Load using Zero Sequence Voltage, you need Zero Sequence Voltage Xmer (V_0(xmer)), Zero Sequence Current Xmer (I_0(xmer)) & Star Impedance Xmer (Z_y(xmer)). With our tool, you need to enter the respective value for Zero Sequence Voltage Xmer, Zero Sequence Current Xmer & Star Impedance Xmer and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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