Table of Contents

1. Introduction
2. Working Principle of 3-Phase Transformers
3. Transformation from 480V to 240V
4. Numerical Analysis
5. Kelida Company Solutions
6. Conclusion
7. References

Introduction

Transformers are fundamental in electrical engineering to convert voltages from one level to another. Specifically, a 480 to 240-volt 3-phase transformer is used in industrial and commercial applications to step down the voltage level.

Working Principle of 3-Phase Transformers

A 3-phase transformer consists of three sets of primary and secondary windings, housed within a single core. Each set of windings is responsible for transforming one of the three phases of electrical power. The basic principle relies on electromagnetic induction, where alternating current (AC) in the primary windings induces a magnetic field that generates AC in the secondary windings.

Transformation from 480V to 240V

The transformation from 480 volts to 240 volts involves stepping down the voltage via the transformer's windings. If the primary winding is connected in a delta configuration and the secondary winding in a wye configuration, the line-to-line voltage transformations will yield 240 volts on the secondary side, given the primary is supplied with 480 volts.

Numerical Analysis

Consider a transformer with a primary side voltage rating of 480V and secondary side rating of 240V. The turns ratio is defined as 2:1.

• Primary Voltage (Vp) = 480V
• Secondary Voltage (Vs) = 240V
• Turns Ratio (Np:Ns) = 2:1

• Assume the transformer is rated for 100 kVA.
• Primary Current (Ip) = 100,000 VA / (√3 * 480V) ≈ 120.14 A
• Secondary Current (Is) = 100,000 VA / (√3 * 240V) ≈ 240.28 A

Kelida Company Solutions

Kelida offers a range of transformers designed for efficient and reliable voltage transformation. Their 480 to 240 3-phase transformers boast high efficiency, low loss, and are suitable for various industrial applications.

• High-efficiency transformers with loss reduction features.
• Customizable solutions for specific industrial needs.
• Robust build ensuring long service life and reduced maintenance.

Conclusion

The 480 to 240 volt 3-phase transformer is an essential component in managing power distribution in industrial settings. A solid understanding of its working principles, coupled with reliable solutions from companies like Kelida, ensures efficient power management and operational continuity.

References

• Electrical Transformers and Their Applications, Power Systems Engineering Journal.
• Kelida Products Catalog and Solutions, Kelida Official Website.
• Understanding 3-Phase Electrical Systems, IEEE Power & Energy Society.