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What is the difference between a single-phase and a three-phase transformer?

date Jul.01,2025 Author WishPower visits 2

What is the Difference Between a Single-Phase and a Three-Phase Transformer?

One of the most frequently asked questions in transformer procurement is: What is the difference between a single-phase and a three-phase transformer? These two types of transformers differ significantly in structure, application, and electrical performance. In this article, we’ll explore these differences with a focus on WishPower’s product range, pricing advantages, technical parameters, and performance features.

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WishPower Pricing Advantage

As a professional cross-border transformer manufacturer, WishPower leverages its own factory and stable supply chain to offer highly competitive pricing. The starting price for a single-phase transformer is approximately $480, while three-phase transformers start at around $1000, depending on configuration. Compared to industry averages, WishPower offers a price advantage of 15%–30% for similar quality.

Product Description

Single-phase transformers are designed for 220V–240V input/output systems, with simple structure ideal for light industrial and residential applications. Three-phase transformers support 380V/400V input/output and are suitable for powering high-demand industrial equipment. WishPower provides a full series of both types, with support for customized solutions to meet diverse use cases.

Technical Specifications

ParameterSingle-Phase TransformerThree-Phase Transformer
Input Voltage (V)220V / 240V380V / 400V / Custom
Output Voltage (V)110V / 220V220V / 400V / 660V / Custom
Capacity (kVA)0.5 - 1005 - 5000
Phase13
Frequency (Hz)50 / 6050 / 60
CoolingNatural / Forced AirNatural / Fan / Oil

Performance Features

Single-phase transformers are compact, lightweight, and easy to install and maintain—ideal for localized power usage. Three-phase transformers offer higher efficiency, smoother operation, and are suited for continuous industrial environments. All WishPower transformers use high-grade silicon steel and copper wire, featuring low loss, low noise, and excellent thermal performance.

Standards and Compliance

WishPower transformers conform to international and national standards, including IEC 60076 and GB/T 10228, and are certified under ISO9001 for quality assurance.

Application Scope

Single-phase transformers are used in home appliances, office systems, lab equipment, and small-scale control systems. Three-phase transformers are used in industrial plants, electric grids, large machinery, buildings, and renewable energy systems.

Customization Services

WishPower offers full customization services from capacity and voltage to enclosure, insulation, and interface design, meeting regional and industrial requirements globally.

WishPower is a global cross-border transformer manufacturer. If you have procurement needs, please contact us via email to get detailed product quotes.

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