B-Phase Current using Fault Impedance (LLF) Solution

STEP 0: Pre-Calculation Summary
Formula Used
B Phase Current = (B Phase Voltage-C Phase Voltage)/Fault Impedance
Ib = (Vb-Vc)/Zf
This formula uses 4 Variables
Variables Used
B Phase Current - (Measured in Ampere) - B phase Current is defined as the current flowing through the b-phase in open conductor fault.
B Phase Voltage - (Measured in Volt) - B phase Voltage is defined as the voltage of b-phase.
C Phase Voltage - (Measured in Volt) - C phase Voltage is defined as the voltage of c-phase.
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
B Phase Voltage: 16.5 Volt --> 16.5 Volt No Conversion Required
C Phase Voltage: 17.2 Volt --> 17.2 Volt No Conversion Required
Fault Impedance: 1.5 Ohm --> 1.5 Ohm No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Ib = (Vb-Vc)/Zf --> (16.5-17.2)/1.5
Evaluating ... ...
Ib = -0.466666666666666
STEP 3: Convert Result to Output's Unit
-0.466666666666666 Ampere --> No Conversion Required
FINAL ANSWER
-0.466666666666666 -0.466667 Ampere <-- B Phase Current
(Calculation completed in 00.004 seconds)

Credits

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Vishwakarma Government Engineering College (VGEC), Ahmedabad
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10+ Current Calculators

Positive Sequence Current using A-Phase EMF(LLF)
Go Positive Sequence Current = A Phase EMF/(Positive Sequence Impedance+Negative Sequence Impedance+Fault Impedance)
B-Phase Current using A-Phase EMF(LLF)
Go B Phase Current = (sqrt(3)*A Phase EMF)/(Positive Sequence Impedance+Negative Sequence Impedance)
Fault Current(LLF)
Go Fault Current = (sqrt(3)*A Phase EMF)/(Positive Sequence Impedance+Negative Sequence Impedance)
Positive Sequence Current using Fault Impedance(LLF)
Go Positive Sequence Current = (Positive Sequence Voltage-Negative Sequence Voltage)/Fault Impedance
B-Phase Current using Fault Impedance (LLF)
Go B Phase Current = (B Phase Voltage-C Phase Voltage)/Fault Impedance
C-Phase Current using Fault Impedance (LLF)
Go C Phase Current = (C Phase Voltage-B Phase Voltage)/Fault Impedance
Positive Sequence Current (LLF)
Go Positive Sequence Current = (-1)*Negative Sequence Current
Negative Sequence Current(LLF)
Go Negative Sequence Current = (-1)*Positive Sequence Current
B-Phase Current (LLF)
Go B Phase Current = (-1)*C Phase Current
C-Phase Current(LLF)
Go C Phase Current = (-1)*B Phase Current

B-Phase Current using Fault Impedance (LLF) Formula

B Phase Current = (B Phase Voltage-C Phase Voltage)/Fault Impedance
Ib = (Vb-Vc)/Zf

What is difference between phase current and line current?

Line current is the current through any one line between a three-phase source and load. Phase current is the current through any one component comprising a three-phase source or load.

How to Calculate B-Phase Current using Fault Impedance (LLF)?

B-Phase Current using Fault Impedance (LLF) calculator uses B Phase Current = (B Phase Voltage-C Phase Voltage)/Fault Impedance to calculate the B Phase Current, The b-phase Current using Fault Impedance (LLF) formula is defined as the current through any one component comprising a three-phase source or load. Here we have taken the b-phase. B Phase Current is denoted by Ib symbol.

How to calculate B-Phase Current using Fault Impedance (LLF) using this online calculator? To use this online calculator for B-Phase Current using Fault Impedance (LLF), enter B Phase Voltage (Vb), C Phase Voltage (Vc) & Fault Impedance (Zf) and hit the calculate button. Here is how the B-Phase Current using Fault Impedance (LLF) calculation can be explained with given input values -> 0.6 = (16.5-17.2)/1.5.

FAQ

What is B-Phase Current using Fault Impedance (LLF)?
The b-phase Current using Fault Impedance (LLF) formula is defined as the current through any one component comprising a three-phase source or load. Here we have taken the b-phase and is represented as Ib = (Vb-Vc)/Zf or B Phase Current = (B Phase Voltage-C Phase Voltage)/Fault Impedance. B phase Voltage is defined as the voltage of b-phase, C phase Voltage is defined as the voltage of c-phase & 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 B-Phase Current using Fault Impedance (LLF)?
The b-phase Current using Fault Impedance (LLF) formula is defined as the current through any one component comprising a three-phase source or load. Here we have taken the b-phase is calculated using B Phase Current = (B Phase Voltage-C Phase Voltage)/Fault Impedance. To calculate B-Phase Current using Fault Impedance (LLF), you need B Phase Voltage (Vb), C Phase Voltage (Vc) & Fault Impedance (Zf). With our tool, you need to enter the respective value for B Phase Voltage, C Phase Voltage & 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 B Phase Current?
In this formula, B Phase Current uses B Phase Voltage, C Phase Voltage & Fault Impedance. We can use 2 other way(s) to calculate the same, which is/are as follows -
  • B Phase Current = (-1)*C Phase Current
  • B Phase Current = (sqrt(3)*A Phase EMF)/(Positive Sequence Impedance+Negative Sequence Impedance)
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