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Impedance of Tertiary Winding in electrical devices refers to the amount of opposition faced by the direct or alternating current when it passes through a conductor component, circuit, or system. It is a crucial parameter in power system analysis and transformer design.
The calculator uses the formula:
Where:
Explanation: This formula calculates the impedance by dividing the transmitted voltage by the transmitted current, following Ohm's law principle for AC circuits.
Details: Accurate impedance calculation is essential for power system protection, fault analysis, transformer design optimization, and ensuring proper voltage regulation in electrical networks.
Tips: Enter transmitted voltage in volts and transmitted current in amperes. Both values must be positive and non-zero for accurate calculation.
Q1: What is the difference between impedance and resistance?
A: Resistance opposes DC current only, while impedance opposes both DC and AC currents, incorporating both resistance and reactance components.
Q2: Why is tertiary winding impedance important in transformers?
A: Tertiary winding impedance affects voltage regulation, fault current distribution, and helps in stabilizing the neutral point in three-phase systems.
Q3: Can this formula be used for both AC and DC circuits?
A: While the formula appears similar to Ohm's law, for AC circuits it calculates the magnitude of impedance which includes both resistive and reactive components.
Q4: What factors affect the impedance of tertiary winding?
A: Winding configuration, core material, frequency of operation, temperature, and physical dimensions of the winding all affect the impedance value.
Q5: How accurate is this calculation method?
A: This provides the magnitude of impedance. For complete impedance characterization in AC systems, phase angle information would also be needed.