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220 kV Three Phase Power Oil Immersed Transformer

The 220 kV Three Phase Power Oil Immersed Transformer from Zisheng is designed for high-voltage transmission systems requiring exceptional reliability and efficiency. As a professional Manufacturer and global Supplier, Zisheng delivers advanced transformer solutions using premium materials and strict quality control processes. This product ensures stable operation, excellent thermal performance, and long service life even in harsh environments. With customizable configurations available, it can meet diverse project requirements across power grids, industrial facilities, and renewable energy sectors. Its robust design guarantees high efficiency, reduced energy loss, and dependable performance for critical infrastructure applications.
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What is a 220 kV Three Phase Power Oil Immersed Transformer?

A 220 kV Three Phase Power Oil Immersed Transformer is a high-capacity electrical device used to transfer electrical energy between circuits through electromagnetic induction. It uses insulating oil for cooling and insulation, ensuring safe and efficient performance in high-voltage transmission networks.

Why is a 220 kV Three Phase Power Oil Immersed Transformer widely used?

This transformer is widely used due to its excellent cooling performance, high insulation strength, and ability to handle large loads continuously. It is particularly suitable for national grids, substations, and large industrial applications where reliability is critical.

How does a 220 kV Three Phase Power Oil Immersed Transformer ensure efficiency?

The transformer uses high-quality silicon steel cores and advanced winding technology to reduce energy losses. Its oil circulation system efficiently dissipates heat, maintaining optimal operating temperatures and improving overall system efficiency.

Can a 220 kV Three Phase Power Oil Immersed Transformer be customizable?

Yes, as an experienced Manufacturer, Zisheng provides fully customizable solutions. Parameters such as capacity, voltage ratio, cooling method, and protection systems can be tailored to meet specific project requirements.

What are the advantages of using a 220 kV Three Phase Power Oil Immersed Transformer?

Key advantages include strong overload capacity, excellent short-circuit resistance, long operational life, and reliable performance in extreme climates. These features make it an ideal choice for demanding power transmission applications.


A power distribution company in Ghana upgraded its substation infrastructure by installing Zisheng 220 kV Three Phase Power Oil Immersed Transformer, significantly improving grid stability and reducing outage frequency.

A mining operation in Peru required a durable and high-capacity solution. Zisheng, as the Supplier, delivered a customizable transformer capable of stable operation in high-altitude and high-temperature conditions.

In Indonesia, a renewable energy EPC contractor integrated Zisheng transformers into a solar power plant, achieving efficient energy conversion and reliable long-term performance.

A utility company in Nigeria selected Zisheng as its Manufacturer partner to supply multiple units for urban substations, successfully meeting increasing electricity demand with consistent performance.

Parameter

Specification

Rated Voltage

220 kV

Rated Capacity

50 MVA – 250 MVA

Phase

Three Phase

Frequency

50 Hz / 60 Hz

Cooling Method

ONAN / ONAF / OFAF

Vector Group

YNd11 / YNd1 (Customizable)

Insulation Level

LI 1050 kVp / AC 460 kV

Temperature Rise

≤ 65K

Tap Changer

OLTC / Off-load

Standards

IEC / ANSI / GB

What is the typical service life of a 220 kV Three Phase Power Oil Immersed Transformer?
The service life generally ranges from 25 to 35 years with proper maintenance and regular inspections.

How often should maintenance be performed on the transformer?
Routine inspections should be conducted annually, while oil testing and condition monitoring are recommended to ensure long-term reliability.

Is this transformer suitable for extreme environments?
Yes, it is designed to operate efficiently in high temperature, high humidity, and other harsh environmental conditions.

Can the transformer be customized for different voltage requirements?
Yes, Zisheng offers fully customizable solutions based on project specifications and regional standards.

What certifications are available for this product?
The transformer complies with international standards such as IEC, ANSI, and GB, ensuring quality and safety compliance.

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