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Transformer Current Formula:
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The transformer current formula calculates the secondary current based on the primary current and the turns ratio of the transformer. It demonstrates the inverse relationship between current and voltage in transformer windings.
The calculator uses the transformer current formula:
Where:
Explanation: The formula shows that current is inversely proportional to the number of turns in the windings, maintaining the power balance in an ideal transformer.
Details: Accurate current calculation is crucial for transformer design, sizing protection devices, ensuring proper load matching, and maintaining system efficiency and safety.
Tips: Enter primary current in amperes, number of turns in primary winding, and number of turns in secondary winding. All values must be positive numbers greater than zero.
Q1: What is the relationship between current and turns ratio?
A: Current is inversely proportional to the turns ratio. Higher turns ratio results in lower secondary current and vice versa.
Q2: Does this formula apply to ideal transformers?
A: Yes, this formula assumes an ideal transformer with no losses, perfect coupling, and no leakage flux.
Q3: How does this relate to voltage transformation?
A: While voltage is directly proportional to turns ratio, current is inversely proportional, maintaining the power balance (Vp × Ip = Vs × Is for ideal transformers).
Q4: What are typical applications of this calculation?
A: Transformer design, electrical system analysis, power distribution planning, and electrical equipment protection coordination.
Q5: Are there limitations to this formula?
A: This formula assumes ideal conditions. Real transformers have losses due to resistance, hysteresis, eddy currents, and leakage flux that affect actual current values.