⚡ Transformer Efficiency Calculator – Online Tool for Engineers

The Transformer Efficiency Calculator helps you quickly determine the efficiency of single-phase and three-phase transformers based on input, output, copper loss, and iron loss. This tool is essential for electrical engineering students and professionals studying or working with transformer performance analysis.

🔍 What is Transformer Efficiency?

Transformer efficiency is the ratio of output power to input power. It shows how effectively a transformer converts electrical energy without excessive losses. Efficiency depends mainly on iron losses (core losses) and copper losses (I²R losses).

⚙️ Formula Used:

Efficiency (η) = (Output Power / Input Power) × 100
OR
η = (Output Power / (Output Power + Total Losses)) × 100
Where Total Losses = Iron Loss + Copper Loss
  

🧠 How to Use the Calculator:

1. Enter the Output Power (in Watts).
2. Enter Iron Loss (in Watts).
3. Enter Copper Loss (in Watts).
4. Click on Calculate Efficiency to find the result instantly.

📘 Example:

Suppose a transformer delivers 950 W output, with iron loss of 25 W and copper loss of 25 W.
Total Loss = 25 + 25 = 50 W
Input Power = 950 + 50 = 1000 W
Efficiency = (950 / 1000) × 100 = 95%

💡 Key Features:

• Works for both single-phase and three-phase transformers
• Instant result with accuracy up to 2 decimal places
• Perfect for BEU, SBTE, Diploma, and B.Tech students
• Useful for transformer testing and design analysis

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Developed for engineering students to simplify complex transformer efficiency calculations in seconds.