1. What is Copper Loss in Transformers?

Definition: Copper loss (I²R loss) is the energy dissipated as heat in the transformer windings due to electrical resistance.

Purpose: This calculator helps electrical engineers and technicians determine power loss in transformer windings for efficiency calculations and thermal design.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Copper loss (Watts)
• \( I \) — Current flowing through the winding (Amperes)
• \( R \) — Resistance of the winding (Ohms)

Explanation: The power loss increases with the square of the current and directly with resistance.

3. Importance of Copper Loss Calculation

Details: Calculating copper loss is essential for transformer efficiency analysis, thermal management, and proper cooling system design.

4. Using the Calculator

Tips: Enter the current in amperes and winding resistance in ohms. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is it called copper loss?
A: Because it occurs in the copper windings of transformers and is proportional to the resistance of these windings.

Q2: How does copper loss affect transformer efficiency?
A: Copper loss represents wasted energy that reduces overall transformer efficiency, especially under load.

Q3: Does copper loss change with temperature?
A: Yes, since copper resistance increases with temperature, copper loss increases as the transformer heats up.

Q4: What's the difference between copper loss and iron loss?
A: Copper loss occurs in windings (load-dependent), while iron loss occurs in the core (mostly constant).

Q5: How can copper loss be minimized?
A: By using thicker conductors (lower resistance), better cooling, or superconducting materials.