Product Overview

The 230kV three-phase oil-immersed power transformer is designed for high-voltage power transmission, regional grid interconnection and large-scale power transformation applications. As a critical piece of equipment in 230kV substations and transmission networks, it is mainly used for voltage step-up and step-down to support efficient, reliable and stable transmission and distribution of electrical energy.

230kV oil-immersed power transformers are widely applied in regional substations, power plants, industrial and mining enterprises, public power facilities, State Grid projects and renewable energy power generation systems. They are suitable for high-voltage transmission networks where reliable voltage conversion and long-term continuous operation are required.

Maximum Capacity: Up to 200MVA
Voltage Class: 230kV
Efficiency Rate: More than 98%, supporting energy-efficient power transmission and transformation
Design Lifespan: More than 30 years under appropriate operating and maintenance conditions
Cooling Options: Designed according to transformer capacity and project requirements
Voltage Regulation: Non-excitation voltage regulation or on-load voltage regulation according to project requirements
Fastest Delivery: Normal delivery period is approximately 90 days; the shortest delivery cycle can be reduced to approximately 50 days for qualified urgent projects.

Our 230kV power transformers have accumulated project experience in more than 50 countries and regions, including Tanzania, Zimbabwe, Ghana, South Africa, Kenya, Zambia, Sudan, Libya, Congo, the United Arab Emirates, Saudi Arabia, Iraq, Syria and Bangladesh.

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Product Advantages

Technical Standards & Global Certifications

To support the requirements of international high-voltage power transmission projects, HENGFENGYOU 230kV power transformers can be designed and manufactured according to multiple international and regional standards.

International Standards:
GB, IEC, GOST, EN, NF, ANSI/IEEE, with customized design available according to specific customer and grid requirements.

Product Certifications:
ISO, CE, IEC, SABS, COC, CSA and UL.

The applicable standard and certification configuration can be selected according to the destination country, project specifications, grid connection requirements and customer technical documents.

High Grid Adaptability & Stable Operation

The 230kV oil-immersed power transformer is designed for demanding power transmission and transformation applications. Its configuration can be customized according to the operating environment, voltage level, capacity, cooling requirements and grid conditions of the project.

The transformer is suitable for:

• Regional 230kV substations

• High-voltage transmission networks

• Power plant booster substations

• Industrial and mining power systems

• Renewable energy grid connection projects

• Regional power grid upgrading projects

Through project-specific electrical and structural design, the transformer can provide stable operation under different power system conditions and load requirements.

Energy-Efficient & Environmentally Friendly Design

The transformer is designed to reduce energy losses during long-term operation. Its efficiency can exceed 98%, supporting efficient power transmission and helping reduce the operating energy consumption of substations and power facilities.

For projects with higher environmental requirements, FR3 environmentally friendly insulating oil and recyclable materials can be considered according to project specifications.

This provides an option for customers seeking lower-carbon power equipment and more environmentally responsible transformer solutions.

Multiple Transformer Configurations

HENGFENGYOU provides different 230kV transformer configurations according to power system requirements.

Available solutions include:

• 230kV three-phase double-winding transformer

• 230kV three-phase three-winding transformer

• 230kV autotransformer

• 230kV non-excitation voltage regulating transformer

• 230kV on-load voltage regulating transformer

Different winding configurations and voltage regulation methods can be selected according to the voltage levels, power transmission structure and operating requirements of the project.

Long-Term Operation & Global Project Experience

HENGFENGYOU 230kV power transformers have been supplied to customers in more than 50 countries and regions.

The accumulated project experience covers power grid transformation, regional power transmission, power plant applications and renewable energy access projects.

The product is designed for a service life of more than 30 years, subject to proper installation, operation and maintenance.

Flexible Delivery Capability

The standard production and delivery period is approximately 90 days.

For urgent projects, the production schedule can be optimized and the delivery period can be shortened to approximately 50 days, depending on the final technical specification, component availability, testing requirements and project schedule.

Why Choose HENGFENGYOU for Your 230kV Transformer Projects?

Customized Engineering & Technical Solutions

230kV transformers are critical primary equipment for high-voltage substations, and their electrical and mechanical parameters must be coordinated with the complete power system.

HENGFENGYOU provides project-based transformer design according to:

• Rated capacity

• Primary and secondary voltage

• Winding configuration

• Voltage regulation requirements

• Short-circuit impedance

• Cooling method

• Installation environment

• Customer technical specifications

Both standard configurations and customized transformer solutions are available for different power transmission and transformation projects.

Multiple Voltage Regulation Solutions

Different grid applications require different voltage regulation methods.

HENGFENGYOU provides both:

Non-excitation voltage regulating transformers
Suitable for applications where voltage adjustment is normally performed while the transformer is de-energized.

On-load voltage regulating transformers
Suitable for power systems requiring voltage adjustment while the transformer remains energized and carrying load.

The appropriate configuration can be selected according to the customer's grid operation requirements.

Strict Testing for High-Voltage Equipment

230kV power transformers require comprehensive testing before delivery.

The testing and inspection program can be arranged according to applicable standards and customer technical specifications, including electrical performance verification, insulation-related tests and other required factory acceptance tests.

For international projects, the test requirements can be coordinated with the applicable IEC, GB, GOST, EN, NF or ANSI/IEEE standards.

Global Export & Technical Support

With experience serving customers in more than 50 countries and regions, HENGFENGYOU provides technical support throughout the transformer project process.

Services can include:

• Technical specification confirmation

• Transformer design

• Production coordination

• Factory testing

• Export packaging

• International logistics coordination

• Installation and commissioning guidance

• Operation and maintenance support

Product Parameters

230kV Double-Winding Non-Excitation Voltage Regulating Power Transformer

230kV / 66kV Double-Winding Non-Excitation Voltage Regulating Power Transformer

230kV Double-Winding On-Load Voltage Regulating Power Transformer

HENGFENGYOU also provides 230kV double-winding transformers equipped with on-load voltage regulation. The available voltage combinations include low-voltage levels such as 6.3kV, 6.6kV, 10.5kV, 11kV, 35kV, 37kV and 38.5kV, depending on the transformer capacity and project requirements.

The on-load voltage regulating configuration is suitable for power systems requiring continuous voltage adjustment during transformer operation.

230kV Three-Winding Non-Excitation Voltage Regulating Power Transformer

Three-winding transformers provide independent high-voltage, medium-voltage and low-voltage winding configurations for multi-voltage-level power transformation.

Typical voltage combinations in the available technical range include:

• HV: 220kV / 242kV

• MV: 69kV / 115kV / 121kV

• LV: 6.3kV / 6.6kV / 10.5kV / 11kV / 35kV / 37kV / 38.5kV

The three-winding configuration is suitable for substations and power systems requiring interconnection between multiple voltage levels.

230kV Three-Winding Autotransformer

The 230kV autotransformer is designed for applications where high-voltage and medium-voltage systems have similar voltage levels and require efficient interconnection.

Available technical configurations cover capacities from 31.5MVA to 240MVA in the listed specifications, with voltage combinations and impedance values customized according to project requirements.

230kV Three-Winding On-Load Voltage Regulating Power Transformer

For grid applications requiring continuous voltage regulation, HENGFENGYOU provides three-winding 230kV transformers with on-load voltage regulation.

These transformers can be configured for multi-voltage-level substations and power transmission systems according to the customer's voltage ratio, capacity, impedance and voltage regulation requirements.

Ordering Instructions

To prepare an accurate technical proposal and quotation for a 230kV power transformer, please provide the following information:

• Main transformer parameters: rated voltage, rated capacity, voltage ratio, frequency, connection group, impedance, losses and other required electrical parameters.

• Voltage regulation requirements: non-excitation voltage regulation or on-load voltage regulation; tap range and tap position if applicable.

• Winding configuration: double-winding, three-winding or autotransformer.

• Cooling requirements: required cooling method according to transformer capacity and operating conditions.

• Operating environment: altitude, ambient temperature, humidity, installation location, pollution level and other environmental conditions.

• Applicable standards: IEC, GB, GOST, EN, NF, ANSI/IEEE or customer-specific technical standards.

• Certification requirements: certification and inspection requirements of the destination country or project.

• Other customization requirements: transformer accessories, bushings, tap changer, radiator configuration, oil conservator, protection devices, enclosure/paint requirements and other project-specific requirements.

• Quantity: The minimum order quantity is 1 set.

• Delivery: Normal delivery period is approximately 90 days; urgent delivery can be discussed according to the final specification and production schedule.

For a customized 230kV transformer quotation, please send your rated capacity, voltage ratio, voltage regulation method, frequency, cooling method and applicable technical standard. Our engineering team can then prepare the corresponding technical solution.

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