What is the Transformer of Efficiency?

What is the  Transformer of Efficiency?

Transformer Efficiency Definition

Transformer efficiency is the ratio of its output power to input power, usually between 95% and 99%.

Factors Affecting Efficiency

Efficiency depends on copper losses, iron losses, dielectric losses, and stray load losses.

Efficiency Calculation

Efficiency is calculated using OC and SC tests, which measure core and winding losses.

Maximum Efficiency Conditions

Maximum efficiency is achieved when copper losses equal core losses, typically at full load.

All-Day Efficiency

This is specific to distribution transformers and is calculated over a 24-hour period, focusing on minimizing core losses.