Fx Copy
LaTeX Copy
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. Check FAQs
Zf=Vc3I0
Zf - Fault Impedance?Vc - C Phase Voltage?I0 - Zero Sequence Current?

Fault Impedance using C-Phase Voltage (LLGF) Example

With values
With units
Only example

Here is how the Fault Impedance using C-Phase Voltage (LLGF) equation looks like with Values.

Here is how the Fault Impedance using C-Phase Voltage (LLGF) equation looks like with Units.

Here is how the Fault Impedance using C-Phase Voltage (LLGF) equation looks like.

2.6061Edit=17.2Edit32.2Edit
You are here -
HomeIcon Home » Category Engineering » Category Electrical » Category Power System » fx Fault Impedance using C-Phase Voltage (LLGF)

Fault Impedance using C-Phase Voltage (LLGF) Solution

Follow our step by step solution on how to calculate Fault Impedance using C-Phase Voltage (LLGF)?

FIRST Step Consider the formula
Zf=Vc3I0
Next Step Substitute values of Variables
Zf=17.2V32.2A
Next Step Prepare to Evaluate
Zf=17.232.2
Next Step Evaluate
Zf=2.60606060606061Ω
LAST Step Rounding Answer
Zf=2.6061Ω

Fault Impedance using C-Phase Voltage (LLGF) Formula Elements

Variables
Fault Impedance
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.
Symbol: Zf
Measurement: Electric ResistanceUnit: Ω
Note: Value should be greater than 0.
C Phase Voltage
C phase Voltage is defined as the voltage of c-phase.
Symbol: Vc
Measurement: Electric PotentialUnit: V
Note: Value can be positive or negative.
Zero Sequence Current
Zero Sequence Current consists of a balanced three-phase current, phasors of which all have the same phase angles and rotate counterclockwise together.
Symbol: I0
Measurement: Electric CurrentUnit: A
Note: Value can be positive or negative.

Other Formulas to find Fault Impedance

​Go Fault Impedance using Sequence Voltages and Zero Sequence Current(LLGF)
Zf=V0-V13I0
​Go Fault Impedance using B-Phase Voltage (LLGF)
Zf=Vb3I0

Other formulas in Impedance category

​Go Positive Sequence Impedance using A-Phase EMF(LLGF)
Z1=Ea-V1I1
​Go Zero Sequence Impedance(LLGF)
Z0=-V0I0
​Go Negative Sequence Impedance(LLGF)
Z2=-V2I2

How to Evaluate Fault Impedance using C-Phase Voltage (LLGF)?

Fault Impedance using C-Phase Voltage (LLGF) evaluator uses Fault Impedance = C Phase Voltage/(3*Zero Sequence Current) to evaluate the Fault Impedance, The Fault Impedance using c-phase Voltage (LLGF) formula is defined as the impedance which is connected to the earth. Fault Impedance is denoted by Zf symbol.

How to evaluate Fault Impedance using C-Phase Voltage (LLGF) using this online evaluator? To use this online evaluator for Fault Impedance using C-Phase Voltage (LLGF), enter C Phase Voltage (Vc) & Zero Sequence Current (I0) and hit the calculate button.

FAQs on Fault Impedance using C-Phase Voltage (LLGF)

What is the formula to find Fault Impedance using C-Phase Voltage (LLGF)?
The formula of Fault Impedance using C-Phase Voltage (LLGF) is expressed as Fault Impedance = C Phase Voltage/(3*Zero Sequence Current). Here is an example- 2.363636 = 17.2/(3*2.2).
How to calculate Fault Impedance using C-Phase Voltage (LLGF)?
With C Phase Voltage (Vc) & Zero Sequence Current (I0) we can find Fault Impedance using C-Phase Voltage (LLGF) using the formula - Fault Impedance = C Phase Voltage/(3*Zero Sequence Current).
What are the other ways to Calculate Fault Impedance?
Here are the different ways to Calculate Fault Impedance-
  • Fault Impedance=(Zero Sequence Voltage-Positive Sequence Voltage)/(3*Zero Sequence Current)OpenImg
  • Fault Impedance=B Phase Voltage/(3*Zero Sequence Current)OpenImg
Can the Fault Impedance using C-Phase Voltage (LLGF) be negative?
No, the Fault Impedance using C-Phase Voltage (LLGF), measured in Electric Resistance cannot be negative.
Which unit is used to measure Fault Impedance using C-Phase Voltage (LLGF)?
Fault Impedance using C-Phase Voltage (LLGF) is usually measured using the Ohm[Ω] for Electric Resistance. Megohm[Ω], Microhm[Ω], Volt per Ampere[Ω] are the few other units in which Fault Impedance using C-Phase Voltage (LLGF) can be measured.
Copied!