Enter the positive sequence voltage (volts) and the positive sequence impedance (ohms) into the calculator to determine the Sequence Current. 

Sequence Current Formula

The following formula is used to calculate the Sequence Current. 

Iseq = Vseq / Zseq

  • Where Iseq is the Sequence Current (amps)
  • Vseq is the positive sequence voltage (volts) 
  • Zseq is the positive sequence impedance (ohms) 

How to Calculate Sequence Current?

The following two example problems outline how to calculate the Sequence Current.

Example Problem #1:

  1. First, determine the positive sequence voltage (volts). In this example, the positive sequence voltage (volts) is measured to be 73.
  2. Next, determine the positive sequence impedance (ohms). For this problem, the positive sequence impedance (ohms) is calculated to be 4.
  3. Finally, calculate the Sequence Current using the formula above: 

Iseq = Vseq / Zseq

Inserting the values from above and solving the equation with the imputed values gives: 

Iseq = 73 / 4 = 18.25 (amps)


Example Problem #2: 

Using the same process as example problem 1, we first define the variables outlined by the formula. In this case, the values are:

positive sequence voltage (volts) = 52

positive sequence impedance (ohms) = 20

Entering these values into the formula or calculator above gives us:: 

Iseq = 52 / 20 = 2.6 (amps)