Negative Sequence Current using A-Phase Current(Two Conductor Open) Calculator

✖A-Phase Current in TCO is the current that flows into the a-phase in open conductor fault.ⓘ A-Phase Current in TCO [I_a(tco)]			+10% -10%
✖Positive Sequence Impedance in TCO is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Impedance in TCO [Z_1(tco)]			+10% -10%
✖Zero Sequence Impedance in TCO is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together.ⓘ Zero Sequence Impedance in TCO [Z_0(tco)]			+10% -10%
✖Negative Sequence Impedance in TCO in open conductor fault is consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart.ⓘ Negative Sequence Impedance in TCO [Z_2(tco)]			+10% -10%

✖Negative Sequence Current in TCO in open conductor fault is consists of balanced three-phase current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.ⓘ Negative Sequence Current using A-Phase Current(Two Conductor Open) [I_2(tco)]

⎘ Copy

👎

Formula

✖

Negative Sequence Current using A-Phase Current(Two Conductor Open)

Formula

`"I"_{"2(tco)"} = "I"_{"a(tco)"}*("Z"_{"1(tco)"}/("Z"_{"0(tco)"}+"Z"_{"1(tco)"}+"Z"_{"2(tco)"}))`

Example

`"0.636948A"="4.84A"*("7.95Ω"/("7.96Ω"+"7.95Ω"+"44.5Ω"))`

Calculator

LaTeX

Reset

👍

Download Open Conductor Fault Formulas PDF

Negative Sequence Current using A-Phase Current(Two Conductor Open) Solution

STEP 0: Pre-Calculation Summary

Formula Used

Negative Sequence Current in TCO = A-Phase Current in TCO*(Positive Sequence Impedance in TCO/(Zero Sequence Impedance in TCO+Positive Sequence Impedance in TCO+Negative Sequence Impedance in TCO))
I_2(tco) = I_a(tco)*(Z_1(tco)/(Z_0(tco)+Z_1(tco)+Z_2(tco)))
This formula uses 5 Variables

Variables Used

Negative Sequence Current in TCO - (Measured in Ampere) - Negative Sequence Current in TCO in open conductor fault is consists of balanced three-phase current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.
A-Phase Current in TCO - (Measured in Ampere) - A-Phase Current in TCO is the current that flows into the a-phase in open conductor fault.
Positive Sequence Impedance in TCO - (Measured in Ohm) - Positive Sequence Impedance in TCO is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.
Zero Sequence Impedance in TCO - (Measured in Ohm) - Zero Sequence Impedance in TCO is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together.
Negative Sequence Impedance in TCO - (Measured in Ohm) - Negative Sequence Impedance in TCO in open conductor fault is consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart.

STEP 1: Convert Input(s) to Base Unit

A-Phase Current in TCO: 4.84 Ampere --> 4.84 Ampere No Conversion Required
Positive Sequence Impedance in TCO: 7.95 Ohm --> 7.95 Ohm No Conversion Required
Zero Sequence Impedance in TCO: 7.96 Ohm --> 7.96 Ohm No Conversion Required
Negative Sequence Impedance in TCO: 44.5 Ohm --> 44.5 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_2(tco) = I_a(tco)*(Z_1(tco)/(Z_0(tco)+Z_1(tco)+Z_2(tco))) --> 4.84*(7.95/(7.96+7.95+44.5))

Evaluating ... ...

I_2(tco) = 0.636947525244165

STEP 3: Convert Result to Output's Unit

0.636947525244165 Ampere --> No Conversion Required

FINAL ANSWER

0.636947525244165 ≈ 0.636948 Ampere <-- Negative Sequence Current in TCO

(Calculation completed in 00.020 seconds)

You are here -

Home » Engineering » Electrical » Power System » Fault » Open Conductor Fault » Two Conductor Open » Negative Sequence » Negative Sequence Current using A-Phase Current(Two Conductor Open)

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!

< 5 Negative Sequence Calculators

Negative Sequence Voltage using A-Phase Current(Two Conductor Open)

Go Negative Sequence Voltage in TCO = -A-Phase Current in TCO*((Positive Sequence Impedance in TCO*Negative Sequence Impedance in TCO)/(Zero Sequence Impedance in TCO+Positive Sequence Impedance in TCO+Negative Sequence Impedance in TCO))

Negative Sequence Current using A-Phase Current(Two Conductor Open)

Go Negative Sequence Current in TCO = A-Phase Current in TCO*(Positive Sequence Impedance in TCO/(Zero Sequence Impedance in TCO+Positive Sequence Impedance in TCO+Negative Sequence Impedance in TCO))

Negative Sequence Potential Difference (Two Conductor Open)

Go Negative Sequence Potential Difference in TCO = ((-1)*Positive Sequence Potential Difference in TCO-Zero Sequence Potential Difference in TCO)

Negative Sequence Voltage using Negative Sequence Current (Two Conductor Open)

Go Negative Sequence Voltage in TCO = -(Negative Sequence Current in TCO*Negative Sequence Impedance in TCO)

Negative Sequence Current using Negative Sequence Voltage (Two Conductor Open)

Go Negative Sequence Current in TCO = -Negative Sequence Voltage in TCO/Negative Sequence Impedance in TCO

Negative Sequence Current using A-Phase Current(Two Conductor Open) Formula

What is two conductor open fault?

When two phases of a balanced three-phase line open it creates an unbalance in the system and results in the flow of unbalanced currents. Such conditions occur in the system when one or two conductors of a transmission line are broken due to storms or if fuses, isolators, or circuit breakers operate only on one or two phases leaving others connected.

How to Calculate Negative Sequence Current using A-Phase Current(Two Conductor Open)?

Negative Sequence Current using A-Phase Current(Two Conductor Open) calculator uses Negative Sequence Current in TCO = A-Phase Current in TCO*(Positive Sequence Impedance in TCO/(Zero Sequence Impedance in TCO+Positive Sequence Impedance in TCO+Negative Sequence Impedance in TCO)) to calculate the Negative Sequence Current in TCO, The Negative Sequence Current using A-phase current(Two conductor open) formula consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ACB rotation. Negative Sequence Current in TCO is denoted by I_2(tco) symbol.

How to calculate Negative Sequence Current using A-Phase Current(Two Conductor Open) using this online calculator? To use this online calculator for Negative Sequence Current using A-Phase Current(Two Conductor Open), enter A-Phase Current in TCO (I_a(tco)), Positive Sequence Impedance in TCO (Z_1(tco)), Zero Sequence Impedance in TCO (Z_0(tco)) & Negative Sequence Impedance in TCO (Z_2(tco)) and hit the calculate button. Here is how the Negative Sequence Current using A-Phase Current(Two Conductor Open) calculation can be explained with given input values -> 0.636948 = 4.84*(7.95/(7.96+7.95+44.5)).

FAQ

What is Negative Sequence Current using A-Phase Current(Two Conductor Open)?

The Negative Sequence Current using A-phase current(Two conductor open) formula consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ACB rotation and is represented as I_2(tco) = I_a(tco)*(Z_1(tco)/(Z_0(tco)+Z_1(tco)+Z_2(tco))) or Negative Sequence Current in TCO = A-Phase Current in TCO*(Positive Sequence Impedance in TCO/(Zero Sequence Impedance in TCO+Positive Sequence Impedance in TCO+Negative Sequence Impedance in TCO)). A-Phase Current in TCO is the current that flows into the a-phase in open conductor fault, Positive Sequence Impedance in TCO is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation, Zero Sequence Impedance in TCO is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together & Negative Sequence Impedance in TCO in open conductor fault is consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart.

How to calculate Negative Sequence Current using A-Phase Current(Two Conductor Open)?

The Negative Sequence Current using A-phase current(Two conductor open) formula consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ACB rotation is calculated using Negative Sequence Current in TCO = A-Phase Current in TCO*(Positive Sequence Impedance in TCO/(Zero Sequence Impedance in TCO+Positive Sequence Impedance in TCO+Negative Sequence Impedance in TCO)). To calculate Negative Sequence Current using A-Phase Current(Two Conductor Open), you need A-Phase Current in TCO (I_a(tco)), Positive Sequence Impedance in TCO (Z_1(tco)), Zero Sequence Impedance in TCO (Z_0(tco)) & Negative Sequence Impedance in TCO (Z_2(tco)). With our tool, you need to enter the respective value for A-Phase Current in TCO, Positive Sequence Impedance in TCO, Zero Sequence Impedance in TCO & Negative Sequence Impedance in TCO 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 Negative Sequence Current in TCO?

In this formula, Negative Sequence Current in TCO uses A-Phase Current in TCO, Positive Sequence Impedance in TCO, Zero Sequence Impedance in TCO & Negative Sequence Impedance in TCO. We can use 1 other way(s) to calculate the same, which is/are as follows -

Negative Sequence Current in TCO = -Negative Sequence Voltage in TCO/Negative Sequence Impedance in TCO

Home

FREE PDFs

🔍 Search