220KV Power Transformer
Your Leading 220KV Power Transformer Supplier
Trust In Grid Co., Ltd. is a professional transformer manufacturer, specializing in the design and production of power transformer, high-voltage switchgear, power distribution equipment, energy storage systems (ESS), magnetic wire, bushing and machining parts. Our power transformers are available in 500KV, 330KV, 220KV, and 110KV models, and are widely used in power utilities, renewable energy systems (solar and wind), industrial facilities, data centers, transportation infrastructure, and OEM applications.
Why Choose Us?
Production Capacity
With 6 factories covering 240,000 m², over 2,000 employees, and 200+ engineers, we support large-scale projects and long-term global supply with more than 30 years of export experience.
Advanced Equipment
We operate a complete set of in-house production equipment, including cutting, winding, CNC machining, vacuum drying, and testing systems, with over 450 machines ensuring stable quality and efficient output.
Quality Control
All products are manufactured and tested in compliance with IEC, IEEE, ANSI, CSA, UL/cUL, CE, and ISO 9001:2015 standards, ensuring reliable performance and smooth international approval.
OEM & ODM Capability
Our engineering team provides OEM/ODM support, including customized design and technical optimization, delivering tailored solutions for utility, industrial, and renewable energy projects.
Technical Specifications of 220KV Power Transformer
|
KVA) |
Rated Voltage and Tapping Range |
Vector Group |
No Load Current |
Short-circuit Impedance (%) |
No load Losses |
On load Losses |
|||
|
HV |
Tapping Range |
LV |
Impedance at Principal Tap |
Impedance at Maximum Tap |
|||||
|
31500 |
220 |
±2×2.5 |
6.3,6.6,10.5 |
YNyn0d11 |
0.45 |
HV~MV: |
HV~MV: |
18 |
138 |
|
40000 |
0.4 |
21 |
165 |
||||||
|
50000 |
0.35 |
24 |
194 |
||||||
|
63000 |
0.35 |
29 |
231 |
||||||
|
90000 |
10.5,13.8,21, |
0.31 |
37 |
300 |
|||||
|
120000 |
0.31 |
46 |
369 |
||||||
|
150000 |
10.5,13.8,15.75 |
0.26 |
55 |
438 |
|||||
|
180000 |
0.26 |
62 |
500 |
||||||
|
240000 |
0.22 |
72 |
616 |
||||||
|
300000 |
0.19 |
91 |
726 |
||||||
Key Advantages of 220KV Power Transformer
High efficiency at operating load
Enables long-distance transmission
Handles very high voltage levels
Reliable long-term operation
Scalable for large power networks
Electric Power Transmission and Distribution
This is the most basic and most important application scenario of power transformers. The voltage output by the power plant cannot meet the demand for long-distance transmission, and it needs to be raised to 110 kV, 220 kV, or even higher through a step-up transformer. After the power is transmitted to the city or industrial area, it is reduced to 10kV, 0.4kV, and other user-end voltages through a step-down transformer.
Industrial Power Systems
Large industrial enterprises such as steel, chemical, and machinery manufacturing require a large number of high-pressure equipment (such as furnaces and motors), and at the same time, there is a low-voltage power supply requirement for precision instruments. Power transformers are the core of balancing voltage. In addition, the load fluctuation of industrial scenes is large, and the overload ability and stability of transformers are extremely high.
Renewable Energy Systems
In photovoltaic, wind power, and other renewable energy projects, the output voltage of photovoltaic panels and wind turbines is unstable, and it needs to be connected to the power grid. The voltage must be regulated and matched through power transformers. Such scenes are mostly located in outdoor and high-altitude areas, and have extremely high requirements for the environmental adaptability of transformers.
Commercial and Residential Applications
The core requirement of scenarios such as shopping malls, office buildings, and residential communities is to reduce the 10kV voltage of the power grid to the 0.4kV voltage of household electricity while ensuring the stability of multiple users' simultaneous electricity use. Such scenes are mostly installed indoors, with strict requirements for noise, volume, and safety.
Railways and Public Transportation
The traction power supply system of the subway and high-speed railway needs a high-voltage power supply, while the station lighting and control system needs low-voltage power, and the traffic scene has extremely high requirements for the reliability of the power supply (a power outage will affect operation). In addition, the subway is mostly a closed underground environment, which requires strict requirements for the heat dissipation and fire resistance of transformers.
Specialized and Critical Infrastructure
Key scenarios such as hospitals, data centers, and nuclear power plants require "zero tolerance" for the stability and security of power supply – the life support equipment of hospitals and the servers of data centers will suffer huge losses if the power is cut. Such scenarios require transformers with redundant design and rapid fault response capabilities.
Components of a 220KV Power Transformer
Primary Winding
Receives the incoming voltage.
01
Secondary Winding
Delivers the transformed output voltage.
02
Magnetic Core
Directs the magnetic flux between the windings.
03
Tank & Cooling System
Filled with insulating oil to cool and protect internal parts.
04
Optional Parts
Tap changers, bushings, and breathers for voltage adjustment and ventilation.
05
Core Lamination Process
The transformer core is manufactured using high-grade CRGO silicon steel to minimize core loss and improve efficiency.
Winding Process (Copper / Aluminum)
Windings are produced using high-conductivity copper or aluminum, depending on project requirements.
Vacuum Drying & Oil Filling
This process ensures optimal insulation performance and long-term reliability.
Testing & Quality Control
Each transformer undergoes strict testing procedures in accordance with international standards.
Final Assembly & Packaging
Final assembly ensures mechanical integrity and readiness for transportation and installation.
Customization Options
Material: Cu / Al
Cooling system: Customizable
Structure: Customizable
MOQ: Customizable
Our Service Highlights
Pre-Sales Consultation & Design Support
Early technical engagement to define requirements and deliver optimized solutions.
During Sales & Project Execution
Transparent project management with controlled production, quality tracking, and on-time delivery.
Warranty Advantage
Minimum 2-year warranty on all products, ensuring reliable and risk-free operation.
After-Sales Support
24/7 technical support with fast response, spare parts availability, and training services.
Long-Term Partnership
Lifelong technical support and upgrade guidance for sustained performance.
Packaging & Shipping
Packaging details:
Shockproof foam/moisture-proof film, professional export cartons/wooden crates/pallets.
Final assembly ensures mechanical integrity and readiness for transportation and installation.
Certificates
We're well-known as one of the leading 220kv power transformer manufacturers and suppliers in China, also support customized service. Please feel free to buy high quality 220kv power transformer made in China here from our factory. Contact us for more details.
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