B-Phase Current (LLGF) Calculator

✖The fault current is the electrical current which flows through a circuit during an electrical fault condition.ⓘ Fault Current [I_f]			+10% -10%
✖C phase current is the current that flows into the c-phase in open conductor fault.ⓘ C Phase Current [I_c]			+10% -10%

✖B phase Current is defined as the current flowing through the b-phase in open conductor fault.ⓘ B-Phase Current (LLGF) [I_b]

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Formula

✖

B-Phase Current (LLGF)

Formula

`"I"_{"b"} = "I"_{"f"}-"I"_{"c"}`

Example

`"0.37A"="4.27A"-"3.9A"`

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B-Phase Current (LLGF) Solution

STEP 0: Pre-Calculation Summary

Formula Used

B Phase Current = Fault Current-C Phase Current
I_b = I_f-I_c
This formula uses 3 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.
Fault Current - (Measured in Ampere) - The fault current is the electrical current which flows through a circuit during an electrical fault condition.
C Phase Current - (Measured in Ampere) - C phase current is the current that flows into the c-phase in open conductor fault.

STEP 1: Convert Input(s) to Base Unit

Fault Current: 4.27 Ampere --> 4.27 Ampere No Conversion Required
C Phase Current: 3.9 Ampere --> 3.9 Ampere No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_b = I_f-I_c --> 4.27-3.9

Evaluating ... ...

I_b = 0.37

STEP 3: Convert Result to Output's Unit

0.37 Ampere --> No Conversion Required

FINAL ANSWER

0.37 Ampere <-- B Phase Current

(Calculation completed in 00.020 seconds)

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Home » Engineering » Electrical » Power System » Fault » Shunt Faults » Unsymmetrical Faults » L-L-G Fault » Current » B-Phase Current (LLGF)

Credits

Created by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has created this Calculator and 1500+ more calculators!

Verified by Payal Priya

Birsa Institute of Technology (BIT), Sindri

Payal Priya has verified this Calculator and 1900+ more calculators!

< 16 Current Calculators

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

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

Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF)

Go Negative Sequence Current = -Positive Sequence Current*((Zero Sequence Impedance+3*Fault Impedance)/(Zero Sequence Impedance+Negative Sequence Impedance+3*Fault Impedance))

Zero Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF)

Go Zero Sequence Current = -Positive Sequence Current*((Negative Sequence Impedance)/(Zero Sequence Impedance+Negative Sequence Impedance+3*Fault Impedance))

Positive Sequence Current using Positive Sequence Voltage (LLGF)

Go Positive Sequence Current = (A Phase EMF-Positive Sequence Voltage)/Positive Sequence Impedance

Zero Sequence Current using Sequence Voltages and Fault Impedance(LLGF)

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

B-Phase Current using B-Phase Voltage(LLGF)

Go B Phase Current = B Phase Voltage/Fault Impedance-C Phase Current

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

Go C Phase Current = C Phase Voltage/Fault Impedance-B Phase Current

Negative Sequence Current using Negative Sequence Voltage (LLGF)

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

Zero Sequence Current using Zero Sequence Voltage (LLGF)

Go Zero Sequence Current = (-1)*Zero Sequence Voltage/Zero Sequence Impedance

Zero Sequence Current using B-Phase Voltage (LLGF)

Go Zero Sequence Current = B Phase Voltage/(3*Fault Impedance)

Zero Sequence Current using C-Phase Voltage (LLGF)

Go Zero Sequence Current = C Phase Voltage/(3*Fault Impedance)

Fault Current using B-Phase Voltage (LLGF)

Go Fault Current = B Phase Voltage/Fault Impedance

Fault Current using C-Phase Voltage (LLGF)

Go Fault Current = C Phase Voltage/Fault Impedance

B-Phase Current (LLGF)

Go B Phase Current = Fault Current-C Phase Current

C-Phase Current (LLGF)

Go C Phase Current = Fault Current-B Phase Current

Fault Current (LLGF)

Go Fault Current = B Phase Current+C Phase Current

B-Phase Current (LLGF) Formula

B Phase Current = Fault Current-C Phase Current
I_b = I_f-I_c

What is line current and how it is different from phase 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 (LLGF)?

B-Phase Current (LLGF) calculator uses B Phase Current = Fault Current-C Phase Current to calculate the B Phase Current, The b-phase current (LLGF) 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 I_b symbol.

How to calculate B-Phase Current (LLGF) using this online calculator? To use this online calculator for B-Phase Current (LLGF), enter Fault Current (I_f) & C Phase Current (I_c) and hit the calculate button. Here is how the B-Phase Current (LLGF) calculation can be explained with given input values -> 0.37 = 4.27-3.9.

FAQ

What is B-Phase Current (LLGF)?

The b-phase current (LLGF) 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 I_b = I_f-I_c or B Phase Current = Fault Current-C Phase Current. The fault current is the electrical current which flows through a circuit during an electrical fault condition & C phase current is the current that flows into the c-phase in open conductor fault.

How to calculate B-Phase Current (LLGF)?

The b-phase current (LLGF) 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 = Fault Current-C Phase Current. To calculate B-Phase Current (LLGF), you need Fault Current (I_f) & C Phase Current (I_c). With our tool, you need to enter the respective value for Fault Current & C Phase Current 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 Fault Current & C Phase Current. We can use 1 other way(s) to calculate the same, which is/are as follows -

B Phase Current = B Phase Voltage/Fault Impedance-C Phase Current

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