Table of Contents

1. Introduction
2. Transformer Basics
3. Step-down Transformers
4. Specific Procedures for 480V to 208V Transformation
5. Kelida Company Solutions
6. Conclusion
7. References

Introduction

Electrical power systems often require voltage conversions to match the needs of various equipment. One common requirement in commercial and industrial settings is the conversion of 480V to 208V. This can be accomplished efficiently using step-down transformers. This article delves into the specifics of such voltage transformations and discusses the solutions provided by Kelida.

Transformer Basics

A transformer is an electrical device designed to transfer electrical energy between two or more circuits through electromagnetic induction. Key components include primary and secondary windings, and a core which facilitates the magnetic field. The transformer can either step up or step down voltage levels.

Key Parameters of Transformers

• Voltage Rating: Specifies the input and output voltage levels. For this application, a transformer with a primary voltage rating of 480V and a secondary voltage rating of 208V is required.
• Power Rating: Indicated in kVA, it determines the load capacity the transformer can handle. Proper sizing is crucial to avoid overloading.
• Impedance: Helps in determining voltage drop and fault current levels.
• Efficiency: A measure of how much input power is successfully converted to output power.

Step-down Transformers

Step-down transformers reduce voltage levels from a higher to a lower value. This is achieved by having fewer windings on the secondary coil compared to the primary coil.

Specific Procedures for 480V to 208V Transformation

Transforming 480V to 208V involves selecting the appropriate transformer and connections. Considerations include the transformer's turns ratio and proper tap configuration.

Numerical Analysis

• Turns Ratio: To achieve 480V to 208V, a transformer with a turns ratio of approximately 2.31:1 (480/208) is essential.
• Example Calculation: If a transformer's primary has 231 turns, the secondary should have about 100 turns to accomplish this voltage conversion.

Kelida Company Solutions

Kelida provides robust solutions for voltage conversion, with a range of transformers tailored to commercial and industrial applications. They focus on high efficiency, reliability, and safety.

Kelida Product Features

• High Efficiency: Up to 98% efficiency to minimize energy loss.
• Custom Configurations: Ability to tailor transformers to specific application needs.
• Advanced Safety Features: Built-in thermal protection and insulation to prevent overloading and overheating.

Conclusion

Transforming 480V to 208V using a step-down transformer is a common requirement, and understanding the technical specifications involved is crucial. Companies like Kelida offer customized solutions to meet these needs effectively and safely.

References

• IEC Standards for Transformers.
• National Electrical Manufacturers Association (NEMA) Guidelines.
• Kelida Company Product Catalog.