Table of Contents

1. Introduction
2. Basic Principles of a 3-Phase Transformer
3. 15kVA Transformer Specifications
4. Operational Mechanics
5. Kelida Company Solutions
6. References

Introduction

The 3-phase 15kVA transformer is a critical component in electrical systems, efficiently converting voltages to ensure appropriate power distribution. Understanding its operational mechanics and specifications aids in optimizing its application in various electrical setups.

Basic Principles of a 3-Phase Transformer

A 3-phase transformer consists of three single-phase transformers wound on a common core. Each winding is spatially separated by 120 electrical degrees, creating a balanced system without neutral current flow under ideal load conditions. Its primary function is to alter the voltage levels between circuits using electromagnetic induction.

15kVA Transformer Specifications

• Rated Power: 15 kVA
• Rated Voltage: Primary: 11kV, Secondary: 415V
• Frequency: 50/60 Hz
• Impedance: Typically 5-6%
• Cooling System: ONAN (Oil Natural Air Natural)

The specifications highlight the transformer's capacity to transfer power efficiently within specified limits, maintaining voltage stability and supporting energy-intensive applications.

Operational Mechanics

The 3-phase 15kVA transformer operates on the principle of electromagnetic induction, where an alternating current in the primary winding generates a magnetic field, inducing a voltage in the secondary winding. The transformation ratio, defined by the turns ratio of the windings, dictates the voltage conversion. Its efficiency is impacted by factors such as load balance, core material, and design.

For instance, the transformer's efficiency (\( \eta \)) can be expressed as:

\(\eta = \frac{{P_{out}}}{{P_{in}}} \times 100\)%

where \( P_{in} \) is the input power and \( P_{out} \) is the output power. A typical 3-phase 15kVA transformer may achieve efficiencies above 95% under full load conditions, minimizing energy losses.

Kelida Company Solutions

Kelida Company provides advanced solutions for the design and manufacturing of 3-phase transformers. Their offerings ensure reliability and performance with features such as:

• Customized ratings and voltage levels to meet specific industry requirements.
• Enhanced cooling systems for improved thermal management.
• Advanced core materials to reduce hysteresis and eddy current losses.
• Smart monitoring systems for real-time condition assessment.

References

1. Smith, J., Electrical Machines and Power Systems, Electric Press, 2020.
2. Kelida Company, Product Catalog and Specifications, 2023.
3. IEEE Standards Association, IEEE Std C57 - Guide for Transformers, 2021.