Solar Inverter Duty Transformers, Built for Renewable Power
Solar power generation has a variable and intermittent operating profile. Solar Inverter Duty Transformers (IDTs) are designed specifically for this application, providing the step-up interface between solar inverters and the medium-voltage collection network.
MDP Power Tech holds the ability to design, manufacture and supply solar transformers as per project requirements. Our Solar Inverter Duty Transformers cover a capacity range of 2 MVA to 17.6 MVA and can be developed with variable input voltage configurations for solar PV applications.
The active components are assembled, dried under controlled conditions, and securely tanked to maintain structural integrity and moisture resistance. High-grade CRGO core laminations and copper or aluminium windings are used to support stable electrical performance under fluctuating solar generation conditions.
Each unit undergoes rigorous routine and type testing as per applicable IS standards. This testing supports reliable step-up performance, grid compatibility, and long-term durability for solar power plant installations.
Our engineering team can work with customers to develop the transformer around the project's inverter configuration, required capacity, voltage levels, site conditions, and application-specific requirements.
Key Features
MDP Solar Inverter Duty Transformers are developed around the electrical and operating requirements of solar PV generation.
Solar-Specific Design
Engineered for the variable and intermittent load profiles typical of solar PV generation.
Efficient Core & Windings
High-grade CRGO core laminations with copper or aluminium windings for controlled losses and stable performance.
Tested for Reliability
Routine and type testing as per applicable IS standards before clearance for solar power plant applications.
Technical Specifications
Solar Inverter Duty Transformer configurations are developed according to the requirements of the solar PV project. The parameters below reflect the capabilities and construction information stated in the MDP Power Tech brochure.
| No. | Item | Specification |
|---|---|---|
| 1 | Transformer Type | Solar Inverter Duty Transformer |
| 2 | Application | Solar PV Power Plants |
| 3 | Capacity Range | 2 MVA – 17.6 MVA |
| 4 | Input Voltage | Variable input voltage as per project requirement |
| 5 | Core Material | High-grade CRGO core lamination |
| 6 | Winding Material | Copper / Aluminium |
| 7 | Cooling | Application-specific |
| 8 | Construction | Engineered according to project requirements |
| 9 | Duty | Solar PV / inverter duty application |
| 10 | Step-Up Application | Inverter output to medium-voltage collection system |
| 11 | Testing | Routine and type testing as per applicable IS standards |
| 12 | Configuration | Customised to project requirements |
Note: The brochure does not state one fixed voltage ratio, vector group, impedance, temperature rise, efficiency value or cooling class for the complete Solar IDT range. These parameters should therefore be confirmed against the specific project specification before quotation or purchase.
Designed Around the Solar Generation Profile
Solar PV output changes with solar irradiance, creating a variable transformer loading profile throughout the operating day. A Solar Inverter Duty Transformer is therefore designed around the electrical characteristics of inverter-based generation rather than treated as a generic grid transformer.
Variable Loading
Designed around changing solar generation and the associated operating profile of PV plants.
Reliable Power Conversion
Engineered to provide dependable step-up transformation from inverter output toward the medium-voltage collection system.
Project-Specific Configuration
Capacity, voltage and other transformer parameters can be developed around the project's electrical architecture.
Manufacturing Process
Every Solar Inverter Duty Transformer passes through a controlled, process-driven manufacturing sequence focused on electrical performance, mechanical integrity and long-term reliability.
High-grade CRGO laminations are assembled to form the magnetic circuit, while copper or aluminium windings are manufactured and insulated according to the required electrical configuration. The active components are then assembled with controlled mechanical integrity.
The active assembly is dried under controlled conditions before being securely tanked. Tanking provides structural integrity and moisture resistance, helping the completed transformer withstand the demands of long-term solar plant operation.
MDP's manufacturing approach follows the same controlled core, winding, assembly, drying, tank fabrication and inspection sequence used across its transformer manufacturing operations.
Testing & Quality
Quality assurance is built into the manufacturing process from active-part preparation through final testing. MDP Power Tech states that its Solar Inverter Duty Transformers undergo rigorous routine and type testing as per applicable IS standards.
Controlled vacuum drying is used to remove residual moisture from the insulation and windings before oil impregnation. The tank is filled with high-dielectric-strength transformer oil under controlled conditions to support insulation and cooling performance.
Routine and applicable type testing covers electrical and performance checks such as insulation resistance, winding resistance, voltage ratio, losses, temperature rise and high-voltage withstand, depending on the applicable transformer specification and test programme.
MDP's broader transformer manufacturing documentation records type testing through NABL-accredited laboratories including CPRI and ERTO, India, for applicable designs.
Where Solar Transformers Are Used
Solar Inverter Duty Transformers are used as a key interface between inverter systems and the medium-voltage electrical collection network in photovoltaic power projects.
Utility-Scale Solar Farms
Transformer solutions for large photovoltaic generation plants and solar park infrastructure.
Solar PV Power Plants
Designed to interface with inverter systems and medium-voltage collection networks.
Renewable Energy Projects
Dedicated transformer solutions for renewable generation projects with application-specific electrical requirements.
Grid-Connected Solar Systems
Supporting the transformation and collection of generated power before connection to the wider electrical network.
Engineered Around Your Solar Project
No two solar projects have exactly the same electrical architecture. MDP Power Tech can develop solar transformer solutions according to project-specific requirements, helping align the transformer with the selected inverter system, capacity, voltage configuration and site conditions.
Depending on the project, the engineering team can work around non-standard voltage ratios and tap configurations, special cooling arrangements, application-specific protection classes, custom vector groups and impedance values, and special mounting configurations.
Electrical Configuration
Transformer capacity, voltage ratio, tap arrangement, vector group and impedance can be developed according to project needs.
Mechanical & Site Requirements
Cooling, protection, mounting and space-related requirements can be considered during engineering and design.
Frequently Asked Questions
What is a Solar Inverter Duty Transformer?
A Solar Inverter Duty Transformer is designed for use between solar inverter systems and the medium-voltage electrical collection network, with its configuration developed around the operating characteristics of solar PV generation.
What capacity range does MDP Power Tech offer?
MDP Power Tech's brochure specifies Solar Inverter Duty Transformers from 2 MVA to 17.6 MVA, with variable input voltage configurations.
Why is a special transformer used for solar applications?
Solar generation is variable and inverter-fed, creating a different operating profile from conventional grid applications. Solar IDTs are designed around these application characteristics.
What core and winding materials are used?
MDP specifies high-grade CRGO core laminations and copper or aluminium windings for its Solar Inverter Duty Transformers.
Can the solar transformer be customised?
Yes. MDP Power Tech states that solar transformers can be designed, manufactured and supplied as per project requirements.
What testing is carried out?
MDP states that each solar transformer undergoes routine and type testing as per applicable IS standards before clearance for solar power plant applications.