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

✖A phase EMF is defined as the electromagnetic force of the a-phase in open conductor fault.ⓘ A Phase EMF [E_a]			+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%

✖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 using A-Phase EMF(LLF) [I₁]

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

STEP 0: Pre-Calculation Summary

Formula Used

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

Variables Used

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.
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 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

A Phase EMF: 29.38 Volt --> 29.38 Volt 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

I₁ = E_a/(Z₁+Z₂+Z_f) --> 29.38/(7.94+(-44.6)+1.5)

Evaluating ... ...

I₁ = -0.835608646188851

STEP 3: Convert Result to Output's Unit

-0.835608646188851 Ampere --> No Conversion Required

FINAL ANSWER

-0.835608646188851 ≈ -0.835609 Ampere <-- Positive Sequence Current

(Calculation completed in 00.020 seconds)

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< Current Calculators

Positive Sequence Current (LLF)

LaTeX Go Positive Sequence Current = (-1)*Negative Sequence Current

Negative Sequence Current(LLF)

LaTeX Go Negative Sequence Current = (-1)*Positive Sequence Current

B-Phase Current (LLF)

LaTeX Go B Phase Current = (-1)*C Phase Current

C-Phase Current(LLF)

LaTeX Go C Phase Current = (-1)*B Phase Current

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

LaTeX Go

Positive Sequence Current = A Phase EMF/(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance)
I₁ = E_a/(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 Positive Sequence Current using A-Phase EMF(LLF)?

Positive Sequence Current using A-Phase EMF(LLF) calculator uses Positive Sequence Current = A Phase EMF/(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance) to calculate the Positive Sequence Current, The Positive Sequence Current using A-phase EMF(LLF) formula is defined as the current that flows in one of the three phases of the power system, while the other two phases remain normal. Positive Sequence Current is denoted by I₁ symbol.

How to calculate Positive Sequence Current using A-Phase EMF(LLF) using this online calculator? To use this online calculator for Positive Sequence Current using A-Phase EMF(LLF), enter A Phase EMF (E_a), Positive Sequence Impedance (Z₁), Negative Sequence Impedance (Z₂) & Fault Impedance (Z_f) and hit the calculate button. Here is how the Positive Sequence Current using A-Phase EMF(LLF) calculation can be explained with given input values -> 0.543671 = 29.38/(7.94+(-44.6)+1.5).

FAQ

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

The Positive Sequence Current using A-phase EMF(LLF) formula is defined as the current that flows in one of the three phases of the power system, while the other two phases remain normal and is represented as I₁ = E_a/(Z₁+Z₂+Z_f) or Positive Sequence Current = A Phase EMF/(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance). A phase EMF is defined as the electromagnetic force of the a-phase in open conductor fault, 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 Positive Sequence Current using A-Phase EMF(LLF)?

The Positive Sequence Current using A-phase EMF(LLF) formula is defined as the current that flows in one of the three phases of the power system, while the other two phases remain normal is calculated using Positive Sequence Current = A Phase EMF/(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance). To calculate Positive Sequence Current using A-Phase EMF(LLF), you need A Phase EMF (E_a), Positive Sequence Impedance (Z₁), Negative Sequence Impedance (Z₂) & Fault Impedance (Z_f). With our tool, you need to enter the respective value for A Phase EMF, 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 Positive Sequence Current?

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

Positive Sequence Current = (-1)*Negative Sequence Current
Positive Sequence Current = (Positive Sequence Voltage-Negative Sequence Voltage)/Fault Impedance

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