Negative Sequence Impedance using A-Phase EMF (LGF) Solution

STEP 0: Pre-Calculation Summary
Formula Used
Negative Sequence Impedance LG = (EMF Induced in Primary Winding LG/Negative Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Zero Sequence Impedance LG
Z2(lg) = (E1(lg)/I2(lg))-(3*Zf(lg))-Z1(lg)-Z0(lg)
This formula uses 6 Variables
Variables Used
Negative Sequence Impedance LG - (Measured in Ohm) - Negative Sequence Impedance LG consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.
EMF Induced in Primary Winding LG - (Measured in Volt) - EMF Induced in Primary Winding LG is the production of voltage in a coil because of the change in magnetic flux through a coil.
Negative Sequence Current LG - (Measured in Ampere) - Negative Sequence Current LG consists of balanced three-phase current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.
Fault Impedance LG - (Measured in Ohm) - Fault Impedance LG 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.
Positive Sequence Impedance LG - (Measured in Ohm) - Positive Sequence Impedance LG consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.
Zero Sequence Impedance LG - (Measured in Ohm) - Zero Sequence Impedance LG consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together.
STEP 1: Convert Input(s) to Base Unit
EMF Induced in Primary Winding LG: 20.5 Volt --> 20.5 Volt No Conversion Required
Negative Sequence Current LG: -0.36 Ampere --> -0.36 Ampere No Conversion Required
Fault Impedance LG: 1.5 Ohm --> 1.5 Ohm No Conversion Required
Positive Sequence Impedance LG: 7.94 Ohm --> 7.94 Ohm No Conversion Required
Zero Sequence Impedance LG: 8 Ohm --> 8 Ohm No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Z2(lg) = (E1(lg)/I2(lg))-(3*Zf(lg))-Z1(lg)-Z0(lg) --> (20.5/(-0.36))-(3*1.5)-7.94-8
Evaluating ... ...
Z2(lg) = -77.3844444444445
STEP 3: Convert Result to Output's Unit
-77.3844444444445 Ohm --> No Conversion Required
FINAL ANSWER
-77.3844444444445 -77.384444 Ohm <-- Negative Sequence Impedance LG
(Calculation completed in 00.020 seconds)

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10+ Impedance Calculators

Positive Sequence Impedance using A-Phase EMF (LGF)
Go Positive Sequence Impedance LG = (EMF Induced in Primary Winding LG/Positive Sequence Current LG)-(3*Fault Impedance LG)-Zero Sequence Impedance LG-Negative Sequence Impedance LG
Negative Sequence Impedance using A-Phase EMF (LGF)
Go Negative Sequence Impedance LG = (EMF Induced in Primary Winding LG/Negative Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Zero Sequence Impedance LG
Zero Sequence Impedance using A-Phase EMF (LGF)
Go Zero Sequence Impedance LG = (EMF Induced in Primary Winding LG/Zero Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Negative Sequence Impedance LG
Fault Impedance given A-Phase EMF and Sequence Impedances(LGF)
Go Fault Impedance LG = 1/3*((A Phase EMF LG/Positive Sequence Current LG)-(Zero Sequence Impedance LG+Positive Sequence Impedance LG+Negative Sequence Impedance LG))
Fault Impedance using Fault Voltage and A-Phase Current(LGF)
Go Fault Impedance LG = Fault Voltage LG/A-Phase Current LG-(1/3*(Zero Sequence Impedance LG+Positive Sequence Impedance LG+Negative Sequence Impedance LG))
Fault Impedance given Sequence Voltages(LGF)
Go Fault Impedance LG = (Zero Sequence Voltage LG+Positive Sequence Voltage LG+Negative Sequence Voltage LG)/(3*Positive Sequence Current LG)
Positive Sequence Impedance for L-G-F
Go Positive Sequence Impedance LG = (EMF Induced in Primary Winding LG-Positive Sequence Voltage LG)/Positive Sequence Current LG
Negative Sequence Impedance for L-G-F
Go Negative Sequence Impedance LG = (-1)*Negative Sequence Voltage LG/Negative Sequence Current LG
Zero Sequence Impedance for L-G-F
Go Zero Sequence Impedance LG = (-1)*Zero Sequence Voltage LG/Zero Sequence Current LG
Fault Impedance using A-Phase Voltage(LGF)
Go Fault Impedance LG = A Phase Voltage LG/A-Phase Current LG

Negative Sequence Impedance using A-Phase EMF (LGF) Formula

Negative Sequence Impedance LG = (EMF Induced in Primary Winding LG/Negative Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Zero Sequence Impedance LG
Z2(lg) = (E1(lg)/I2(lg))-(3*Zf(lg))-Z1(lg)-Z0(lg)

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 Negative Sequence Impedance using A-Phase EMF (LGF)?

Negative Sequence Impedance using A-Phase EMF (LGF) calculator uses Negative Sequence Impedance LG = (EMF Induced in Primary Winding LG/Negative Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Zero Sequence Impedance LG to calculate the Negative Sequence Impedance LG, The Negative Sequence Impedance using a-phase EMF (LGF) formula is consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation. Negative Sequence Impedance LG is denoted by Z2(lg) symbol.

How to calculate Negative Sequence Impedance using A-Phase EMF (LGF) using this online calculator? To use this online calculator for Negative Sequence Impedance using A-Phase EMF (LGF), enter EMF Induced in Primary Winding LG (E1(lg)), Negative Sequence Current LG (I2(lg)), Fault Impedance LG (Zf(lg)), Positive Sequence Impedance LG (Z1(lg)) & Zero Sequence Impedance LG (Z0(lg)) and hit the calculate button. Here is how the Negative Sequence Impedance using A-Phase EMF (LGF) calculation can be explained with given input values -> -77.384444 = (20.5/(-0.36))-(3*1.5)-7.94-8.

FAQ

What is Negative Sequence Impedance using A-Phase EMF (LGF)?
The Negative Sequence Impedance using a-phase EMF (LGF) formula is consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation and is represented as Z2(lg) = (E1(lg)/I2(lg))-(3*Zf(lg))-Z1(lg)-Z0(lg) or Negative Sequence Impedance LG = (EMF Induced in Primary Winding LG/Negative Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Zero Sequence Impedance LG. EMF Induced in Primary Winding LG is the production of voltage in a coil because of the change in magnetic flux through a coil, Negative Sequence Current LG consists of balanced three-phase current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation, Fault Impedance LG 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, Positive Sequence Impedance LG consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation & Zero Sequence Impedance LG consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together.
How to calculate Negative Sequence Impedance using A-Phase EMF (LGF)?
The Negative Sequence Impedance using a-phase EMF (LGF) formula is consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation is calculated using Negative Sequence Impedance LG = (EMF Induced in Primary Winding LG/Negative Sequence Current LG)-(3*Fault Impedance LG)-Positive Sequence Impedance LG-Zero Sequence Impedance LG. To calculate Negative Sequence Impedance using A-Phase EMF (LGF), you need EMF Induced in Primary Winding LG (E1(lg)), Negative Sequence Current LG (I2(lg)), Fault Impedance LG (Zf(lg)), Positive Sequence Impedance LG (Z1(lg)) & Zero Sequence Impedance LG (Z0(lg)). With our tool, you need to enter the respective value for EMF Induced in Primary Winding LG, Negative Sequence Current LG, Fault Impedance LG, Positive Sequence Impedance LG & Zero Sequence Impedance LG 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 Negative Sequence Impedance LG?
In this formula, Negative Sequence Impedance LG uses EMF Induced in Primary Winding LG, Negative Sequence Current LG, Fault Impedance LG, Positive Sequence Impedance LG & Zero Sequence Impedance LG. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Negative Sequence Impedance LG = (-1)*Negative Sequence Voltage LG/Negative Sequence Current LG
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