A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF) Calculator

✖Positive Sequence Current consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Current [I₁]			+10% -10%
✖Positive Sequence Impedance consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Impedance [Z₁]			+10% -10%
✖Negative Sequence Impedance consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.ⓘ Negative Sequence Impedance [Z₂]			+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 [Z_f]			+10% -10%

✖A phase EMF is defined as the electromagnetic force of the a-phase in open conductor fault.ⓘ A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF) [E_a]

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A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF) Solution

STEP 0: Pre-Calculation Summary

Formula Used

A Phase EMF = Positive Sequence Current*(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance)
E_a = I₁*(Z₁+Z₂+Z_f)
This formula uses 5 Variables

Variables Used

A Phase EMF - (Measured in Volt) - A phase EMF is defined as the electromagnetic force of the a-phase in open conductor fault.
Positive Sequence Current - (Measured in Ampere) - Positive Sequence Current consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.
Positive Sequence Impedance - (Measured in Ohm) - Positive Sequence Impedance consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.
Negative Sequence Impedance - (Measured in Ohm) - Negative Sequence Impedance consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.
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.

STEP 1: Convert Input(s) to Base Unit

Positive Sequence Current: 2.001 Ampere --> 2.001 Ampere No Conversion Required
Positive Sequence Impedance: 7.94 Ohm --> 7.94 Ohm No Conversion Required
Negative Sequence Impedance: -44.6 Ohm --> -44.6 Ohm No Conversion Required
Fault Impedance: 1.5 Ohm --> 1.5 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

E_a = I₁*(Z₁+Z₂+Z_f) --> 2.001*(7.94+(-44.6)+1.5)

Evaluating ... ...

E_a = -70.35516

STEP 3: Convert Result to Output's Unit

-70.35516 Volt --> No Conversion Required

FINAL ANSWER

-70.35516 Volt <-- A Phase EMF

(Calculation completed in 00.020 seconds)

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Indian Institute of Technology,Roorlee (IITR), Roorkee

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< Voltage and EMF Calculators

C-Phase Voltage using C-Phase Current (LLF)

LaTeX Go C Phase Voltage = B Phase Voltage+(Fault Impedance*C Phase Current)

B-Phase Voltage using C-Phase Current (LLF)

LaTeX Go B Phase Voltage = C Phase Voltage-(Fault Impedance*C Phase Current)

B-Phase Voltage (LLF)

LaTeX Go B Phase Voltage = (Fault Impedance*B Phase Current)+C Phase Voltage

C-Phase Voltage (LLF)

LaTeX Go C Phase Voltage = B Phase Voltage-(Fault Impedance*B Phase Current)

A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF) Formula

LaTeX Go

A Phase EMF = Positive Sequence Current*(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance)
E_a = I₁*(Z₁+Z₂+Z_f)

What is a line to line fault?

A line-to-line fault, also known as a three-phase fault, is a type of electrical fault that occurs in a three-phase power system. This type of fault occurs when a failure occurs between two phases of the power system, causing a current to flow from one phase to the other.

How to Calculate A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF)?

A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF) calculator uses A Phase EMF = Positive Sequence Current*(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance) to calculate the A Phase EMF, The A-phase EMF using Positive Sequence Current and Sequence Impedances(LLF) formula is defined as the electrical potential difference that is present in one phase of a three-phase electrical power system during a fault condition. A Phase EMF is denoted by E_a symbol.

How to calculate A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF) using this online calculator? To use this online calculator for A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF), enter Positive Sequence Current (I₁), Positive Sequence Impedance (Z₁), Negative Sequence Impedance (Z₂) & Fault Impedance (Z_f) and hit the calculate button. Here is how the A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF) calculation can be explained with given input values -> 108.134 = 2.001*(7.94+(-44.6)+1.5).

FAQ

What is A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF)?

The A-phase EMF using Positive Sequence Current and Sequence Impedances(LLF) formula is defined as the electrical potential difference that is present in one phase of a three-phase electrical power system during a fault condition and is represented as E_a = I₁*(Z₁+Z₂+Z_f) or A Phase EMF = Positive Sequence Current*(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance). Positive Sequence Current consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation, Positive Sequence Impedance consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation, Negative Sequence Impedance consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation & 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.

How to calculate A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF)?

The A-phase EMF using Positive Sequence Current and Sequence Impedances(LLF) formula is defined as the electrical potential difference that is present in one phase of a three-phase electrical power system during a fault condition is calculated using A Phase EMF = Positive Sequence Current*(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance). To calculate A-Phase EMF using Positive Sequence Current and Sequence Impedances(LLF), you need Positive Sequence Current (I₁), Positive Sequence Impedance (Z₁), Negative Sequence Impedance (Z₂) & Fault Impedance (Z_f). With our tool, you need to enter the respective value for Positive Sequence Current, Positive Sequence Impedance, Negative Sequence Impedance & Fault Impedance 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 A Phase EMF?

In this formula, A Phase EMF uses Positive Sequence Current, Positive Sequence Impedance, Negative Sequence Impedance & Fault Impedance. We can use 3 other way(s) to calculate the same, which is/are as follows -

A Phase EMF = Positive Sequence Voltage+Positive Sequence Impedance*Positive Sequence Current
A Phase EMF = (Positive Sequence Voltage*(Positive Sequence Impedance+Negative Sequence Impedance))/Negative Sequence Impedance
A Phase EMF = (Fault Current*(Positive Sequence Impedance+Negative Sequence Impedance))/sqrt(3)

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