HENGFENGYOU ELECTRIC --SMART ELECTRIC GLOBAL SERVICE PROVIDER
The 232kV three-phase oil-immersed power transformer is designed for high-voltage power transmission, regional power grid transformation and multi-voltage-level energy distribution. It serves as an important primary equipment solution for substations, power plants, industrial and mining enterprises, public power facilities and renewable energy grid connection projects.
The 232kV power transformer is mainly used for voltage step-up and step-down, enabling efficient transmission and distribution of electrical energy between different voltage levels. According to the project configuration, HENGFENGYOU can provide double-winding transformers, three-winding transformers and autotransformers to meet different grid interconnection requirements.
The product is particularly suitable for power systems requiring flexible voltage conversion, multi-voltage-level interconnection and stable operation under continuously changing load conditions.
Voltage Class: 232kV
Capacity Range: Available configurations cover medium- and large-capacity applications, with technical specifications extending up to 360MVA in the listed product range
Efficiency Rate: More than 99% according to the available product specifications
Design Lifespan: More than 30 years
Voltage Regulation: Non-excitation voltage regulation or on-load voltage regulation
Cooling Options: Available according to transformer capacity, load characteristics and project requirements
Environmental Options: FR3 environmentally friendly insulating oil available for projects requiring enhanced environmental performance
Fastest Delivery: Normal delivery period is approximately 90 days; the shortest stated delivery cycle is 50 days
HENGFENGYOU 232kV power transformers have accumulated project experience in more than 50 countries and regions, with applications covering power grid transformation, photovoltaic booster stations and other power transmission and new energy projects.
HENGFENGYOU 232kV oil-immersed power transformers can be designed, manufactured and tested according to different international and regional standards.
International Standards:
GB, IEC, GOST, EN, NF and ANSI/IEEE.
Customized technical solutions are available according to customer standards, destination-country requirements and specific power grid specifications.
Product Certifications:
ISO, CE, IEC, SABS, COC, CSA and UL.
The applicable certification and inspection requirements can be determined according to the project location, grid operator and customer technical specifications.
One of the key advantages of the 232kV power transformer is its flexibility in connecting different voltage levels within a power system.
Depending on the substation configuration, HENGFENGYOU provides:
Three-winding transformers are suitable for systems requiring connection between multiple voltage levels, while autotransformers can be considered for applications where the high-voltage and medium-voltage levels are relatively close.
This makes the 232kV transformer suitable for regional grid transformation, transmission interconnection and renewable energy integration projects.
According to the available product information, the efficiency of the 232kV transformer can exceed 99% and is stated to meet the referenced European Ecodesign energy-efficiency requirements.
Optimized transformer design helps reduce electrical losses during long-term operation and supports efficient transmission of large amounts of electrical energy across regional power networks.
For high-capacity substations, improving transformer efficiency can contribute to lower operating losses throughout the equipment's service life.
The 232kV transformer has accumulated application experience in global power grid transformation and renewable energy access projects, including photovoltaic booster stations.
The transformer can be engineered according to the electrical and environmental conditions of the project, including:
This project-oriented design approach helps the transformer adapt to conventional transmission systems as well as new energy power delivery applications.
Different grid operating conditions may require different voltage regulation methods.
HENGFENGYOU provides:
Non-Excitation Voltage Regulation
Suitable for applications where tap adjustment is performed after the transformer has been de-energized.
On-Load Voltage Regulation
Suitable for power systems requiring voltage adjustment while the transformer remains energized and carrying load.
The available 232kV technical configurations include both non-excitation and on-load voltage regulating transformers.
For projects with higher environmental requirements, HENGFENGYOU can provide FR3 environmentally friendly insulating oil and recyclable materials according to project specifications.
These options can help reduce the environmental impact associated with transformer operation and support customers' sustainability and low-carbon development objectives.
The original product specification identifies environmentally friendly insulation oil and recyclable materials as part of its sustainable design approach.
The 232kV transformer is designed for a service life of more than 30 years under appropriate operating and maintenance conditions.
For long-term reliability, the transformer can be configured with appropriate cooling, voltage regulation, monitoring and protection systems according to the project requirements.
Regular insulation oil testing, operating temperature monitoring and condition-based maintenance can further support reliable long-term operation.
A 232kV transformer is not simply selected according to rated voltage and capacity. The final configuration needs to match the complete power system.
HENGFENGYOU develops transformer solutions according to:
This allows customers to select a configuration suitable for regional substations, power plants, industrial facilities and renewable energy projects.
HENGFENGYOU provides three main structural configurations for 232kV applications.
Double-Winding Transformer
Suitable for conventional two-voltage-level power transmission and transformation systems.
Three-Winding Transformer
Provides three independent voltage levels and is suitable for substations requiring multi-voltage-level power conversion.
Autotransformer
Suitable for interconnection between voltage systems with relatively close voltage levels. Its shared winding structure can provide advantages in terms of size, efficiency and material utilization for appropriate applications.
The original product specification identifies these three transformer types as the primary 232kV product configurations.
For power systems where voltage needs to be continuously adjusted according to changing load conditions, the 232kV transformer can be equipped with an on-load tap changer (OLTC).
The available technical data includes 232kV double-winding and three-winding on-load voltage regulating transformer configurations.
The tap range, tap changer brand and voltage regulation scheme can be customized according to the customer's grid requirements.
Before shipment, 232kV transformers can undergo comprehensive factory testing according to applicable standards and customer technical specifications.
Depending on the project requirements, the testing program can include:
The final test scope is determined according to the applicable IEC, GB, GOST, EN, NF, ANSI/IEEE or customer-specific requirements.
HENGFENGYOU has accumulated project experience in more than 50 countries and regions.
The 232kV product has been applied in power grid transformation, renewable energy access and photovoltaic booster station projects. Markets referenced in the original product material include Tanzania, Zimbabwe, Ghana, South Africa, Kenya, Zambia, Sudan, Libya, Congo, the United Arab Emirates, Saudi Arabia, Iraq, Syria and Bangladesh.
This international project experience helps HENGFENGYOU coordinate transformer design with different grid standards, certification requirements and project environments.
The standard delivery capability stated for the 232kV transformer is approximately 90 days, while the shortest delivery cycle can reach approximately 50 days, depending on the final technical specification and production schedule.
For urgent power infrastructure projects, production planning can be coordinated according to the required commissioning schedule.
| Rated Capacity (kVA) | HV (kV) | LV (kV) | Connection Symbol | No-Load Loss (kW) | Full-Load Loss (kW) | Impedance (%) | No-Load Current (%) |
|---|---|---|---|---|---|---|---|
| 31,500 | 242±2×2.5% | 6.3 / 6.6 / 10.5 / 11 | YNd11 | 35 | 135 | 12–14 | 0.70 |
| 40,000 | 242±2×2.5% | 41 | YNd11 | 35 | 157 | 12–14 | 0.70 |
| 50,000 | 242±2×2.5% | 49 | YNd11 | 35 | 189 | 12–14 | 0.65 |
| 63,000 | 242±2×2.5% | 58 | YNd11 | 35 | 220 | 12–14 | 0.65 |
| 75,000 | 242±2×2.5% | 10.5 / 11 / 13.8 | YNd11 | 35 | 250 | 12–14 | 0.60 |
| 90,000 | 242±2×2.5% | 77 | YNd11 | 35 | 288 | 12–14 | 0.55 |
| 120,000 | 242±2×2.5% | 94 | YNd11 | 35 | 345 | 12–14 | 0.55 |
| 150,000 | 242±2×2.5% | 11 / 13.8 / 15.75 / 20 | YNd11 | 35 | 405 | 12–14 | 0.50 |
| 180,000 | 242±2×2.5% | 128 | YNd11 | 35 | 459 | 12–14 | 0.46 |
| 240,000 | 242±2×2.5% | 160 | YNd11 | 35 | 567 | 12–14 | 0.42 |
| 300,000 | 242±2×2.5% | 15.75 / 18 / 20 | YNd11 | 35 | 675 | 12–14 | 0.38 |
| 360,000 | 242±2×2.5% | 217 | YNd11 | 35 | 774 | 12–14 | 0.38 |
The above values are reproduced from the supplied 232kV technical specification. The source itself identifies the high-voltage side as 242±2×2.5%, so this parameter should be confirmed with your technical department before publication.
| Rated Capacity (kVA) | HV (kV) | LV (kV) | Connection Symbol | No-Load Loss (kW) | Full-Load Loss (kW) | Impedance (%) | No-Load Current (%) |
|---|---|---|---|---|---|---|---|
| 31,500 | 242±2×2.5% | 63 / 66 / 69 | YNd11 | 38 | 151 | 12–14 | 0.89 |
| 40,000 | 242±2×2.5% | 45 | YNd11 | 38 | 176 | 12–14 | 0.89 |
| 50,000 | 242±2×2.5% | 53 | YNd11 | 38 | 211 | 12–14 | 0.82 |
| 63,000 | 242±2×2.5% | 63 | YNd11 | 38 | 247 | 12–14 | 0.82 |
| 90,000 | 242±2×2.5% | 83 | YNd11 | 38 | 323 | 12–14 | 0.75 |
| 120,000 | 242±2×2.5% | 102 | YNd11 | 38 | 387 | 12–14 | 0.75 |
| 150,000 | 242±2×2.5% | 122 | YNd11 | 38 | 453 | 12–14 | 0.68 |
| 180,000 | 242±2×2.5% | 138 | YNd11 | 38 | 513 | 12–14 | 0.68 |
| 240,000 | 242±2×2.5% | 171 | YNd11 | 38 | 635 | 12–14 | 0.61 |
The 232kV double-winding on-load voltage regulating transformer is designed for power systems requiring voltage adjustment during normal energized operation.
The available technical data covers capacities from 31.5MVA to 180MVA in the main listed range, with additional configurations using 66kV and 69kV low-voltage levels.
Typical low-voltage combinations include:
The detailed tap range and electrical parameters should be selected according to the final project specification.
The three-winding configuration is designed for substations requiring connection between three different voltage levels.
The available technical configuration includes:
High Voltage: 242kV class
Medium Voltage: 69kV / 115kV / 121kV
Low Voltage: 6.3kV / 6.6kV / 10.5kV / 11kV / 35kV / 37kV / 38.5kV
The listed capacity range extends from 31.5MVA to 300MVA.
The transformer can be configured for step-up or step-down applications according to the project power system.
The three-winding autotransformer is designed for applications where high-voltage and medium-voltage systems require efficient interconnection.
The listed technical range covers capacities from 31.5MVA to 240MVA, with medium-voltage configurations including 115kV and 121kV and low-voltage configurations including 6.6kV, 10.5kV, 11kV, 35kV, 37kV and 38.5kV.
Compared with a conventional three-winding transformer, an autotransformer shares part of the winding structure between voltage levels and can provide advantages in efficiency and equipment size for suitable voltage relationships.
The three-winding on-load voltage regulating transformer is suitable for multi-voltage-level substations requiring continuous voltage control.
The listed technical data covers capacities from 31.5MVA to 240MVA.
Typical voltage configurations include:
The tap changer and voltage regulation range can be selected according to the customer's grid operation requirements.
The 232kV transformer can be used as the main transformer in regional substations, supporting voltage conversion between transmission and distribution networks.
The transformer can be used for voltage step-up applications at power plants, transferring generated electrical energy into high-voltage transmission networks.
For photovoltaic and other renewable energy projects, 232kV transformers can serve as high-voltage step-up equipment in booster substations and power delivery systems.
Large industrial and mining facilities may require high-capacity transformers to connect internal electrical systems with regional high-voltage networks.
Three-winding transformers and autotransformers can be used where multiple voltage levels need to be interconnected within the same substation.
To prepare an accurate technical proposal and quotation for a 232kV power transformer, please provide:
For a customized 232kV transformer quotation, please send your rated capacity, voltage ratio, winding configuration, voltage regulation method, cooling requirements and applicable technical standard.
Our engineering team can provide a project-specific transformer solution based on your power system requirements.
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