Introduction: What Is a Single Phase Power Transformer?

A single phase power transformer is an electrical transformer designed to transfer electrical energy between two circuits using electromagnetic induction. It is mainly used in low-voltage and medium-voltage power distribution systems where single-phase loads are required.

Compared with three-phase transformers, single phase power transformers are typically used for residential power supply, rural electrification, small commercial facilities, agricultural applications, and distributed power networks.

作为专业人员 single phase transformer manufacturer in China, EverNew Transformer provides reliable single phase power transformers with capacities ranging from small distribution units to customized solutions for utility and industrial applications.

Our single phase transformers are manufactured according to international standards including IEC 60076, ANSI/IEEE requirements, and customer-specific specifications.

Single Phase Power Transformer Working Principle

A single phase power transformer operates based on the principle of electromagnetic induction.

When alternating current flows through the primary winding, it creates a changing magnetic field inside the transformer core. This magnetic flux induces voltage in the secondary winding, allowing electrical energy to be transferred while changing the voltage level.

The transformer can:

• Step down high voltage electricity for end users
• Step up voltage for power transmission
• Provide electrical isolation between circuits
• Improve power distribution efficiency

The basic components include:

• Silicon steel core or amorphous alloy core
• 主繞組
• 二次繞組
• Insulation system
• Transformer tank
• Cooling medium (oil or air)

Types of Single Phase Power Transformers

1. Single Phase Oil Immersed Power Transformer

"(《世界人权宣言》) single phase oil immersed pad mounted transformer is one of the most commonly used solutions for outdoor power distribution.

The transformer windings and core are immersed in insulating oil, which provides:

• Excellent insulation performance
• Efficient heat dissipation
• Long service life
• Reliable outdoor operation

Typical applications:

• 公用事业配电网络
• Rural electrification projects
• Residential power supply
• 可再生能源系统

Common specifications:

2. Single Phase Pole Mounted Transformer

A 单相柱上变压器 is designed for overhead distribution systems.

It is widely installed on utility poles to supply electricity to residential customers and rural areas.

优势

• Compact structure
• 安裝簡便
• 低維護
• Suitable for outdoor environments

Typical capacities:

• 10 千伏安
• 15 千伏安
• 25 千伏安
• 37.5 千伏安
• 50 千伏安
• 75 千伏安
• 100 千伏安
• 167 kVA

Pole mounted transformers are commonly used in:

• 北美
• 南美洲
• 東南亞
• 非洲
• Rural electrification projects

3. Single Phase Dry Type Transformer

A single phase dry type transformer uses air or resin insulation instead of transformer oil.

It is suitable for applications requiring:

• High safety
• Fire resistance
• 室内安装

Common applications:

• Buildings
• 数据中心
• 医院
• 工業設施

优势

• No oil leakage risk
• Environmentally friendly
• Low maintenance requirements

Single Phase Power Transformer vs Three Phase Transformer

Many customers ask whether they should choose a single phase or three phase transformer.

A single phase transformer is usually the best choice when:

• The electrical load is mainly residential
• The power requirement is below several hundred kVA
• The distribution system uses single-phase supply

How to Select the Right Single Phase Power Transformer?

Before purchasing a single phase transformer, buyers should consider the following factors:

1. Rated Capacity (kVA)

The transformer capacity should match the connected electrical load.

Common ratings:

• 10 千伏安
• 25 千伏安
• 50 千伏安
• 75 千伏安
• 100 千伏安
• 167 kVA
• 250 kVA

Selecting the correct kVA rating helps prevent overheating and improves transformer lifetime.

2. Primary and Secondary Voltage

The input and output voltage must match the power system requirements.

範例：

• 11kV / 0.415kV
• 13.8kV / 240V
• 22kV / 400V
• 33kV / 0.4kV

3. Transformer Core Material

Modern single phase transformers commonly use:

Silicon Steel Core

好处

• Reliable performance
• Competitive price
• Widely available

Amorphous Alloy Core

好处

• Lower no-load losses
• Higher energy efficiency
• Suitable for utility projects

4. Applicable Standards

Depending on the destination market, transformers may need to comply with:

• IEC 60076
• IEEE C57
• ANSI standards
• CSA standards
• DOE efficiency requirements
• GOST/EAC requirements

Why Choose EverNew as Your Single Phase Transformer Supplier?

EverNew Transformer is an experienced single phase transformer manufacturer in China, supplying distribution transformers to customers worldwide.

Our advantages include:

Professional Manufacturing Capability

• More than 30 years of transformer manufacturing experience
• Complete production facilities
• Advanced winding and testing equipment
• Strict quality control system

Wide Product Range

我們提供：

• Single phase power transformers
• Single phase distribution transformers
• 杆式变压器
• 油浸变压器
• 干式变压器
• Customized transformer solutions

International Standards

Our transformers can be designed according to:

• IEC 60076
• ANSI/IEEE
• CSA
• DOE efficiency requirements

全球出口經驗

We supply transformers for customers in:

• 美国
• 加拿大
• 南美洲
• 東南亞
• 非洲
• 中亚

Frequently Asked Questions About Single Phase Power Transformers

What is a single phase power transformer used for?

A single phase power transformer is mainly used for residential distribution, rural electrification, small commercial buildings, and applications requiring single-phase power supply.

What is the price of a single phase transformer?

The price depends on:

• 额定容量
• 電壓等級
• 变压器类型
• 核心材料
• 标准
• 数量

For an accurate quotation, customers should provide transformer specifications and destination information.

Can you manufacture customized single phase transformers?

Yes. EverNew can customize:

• 电压比
• 容量
• 频率
• 冷却方式
• 核心材料
• 配件
• Local standards

Request a Quote for Single Phase Power Transformer

Looking for a reliable single phase power transformer manufacturer?

EverNew Transformer provides high-quality single phase transformers for utility, industrial, and commercial power distribution applications.

Contact our engineering team today and send your requirements, including:

• Transformer capacity (kVA)
• 初级电压
• 二次电压
• 数量
• Required standards
• Delivery destination

We will provide a professional technical solution and competitive quotation.

Get your single phase power transformer quotation today.