Power Rating: 100 kVA to 10 MVA (Customizable as per project requirement)
Voltage Rating: Up to 33 kV
Phase: Three Phase / Single Phase
Frequency: 50 Hz
Cooling Type: ONAN / ONAF
Vector Group: Dyn11 / Dyn5 / As per requirement
Insulation Class: Class A / Class F
Efficiency: High efficiency with low losses as per IS standards
Purpose-Built Solar Inverter Duty Transformers from 100 KVA to 10 MVA — Serving Mumbai, Pune, Nashik, Nagpur, Aurangabad, Solapur and All Maharashtra Districts
Maharashtra ranked among India’s top five states for installed solar capacity as of 2024, with the state government’s ambitious target of 17,520 MW of renewable energy driving a wave of rooftop, ground-mount, and agri-solar installations across every district. Behind every one of these installations sits a single critical piece of equipment — the solar inverter duty transformer that connects the inverter’s AC output to the grid.
A Solar Transformer Maharashtra project cannot use a standard distribution transformer. The harmonic-rich output of a solar inverter, the daily thermal cycling from zero to full load and back, and the continuous no-load energization overnight create operating conditions that a standard transformer was never designed for — leading to overheating, accelerated insulation ageing, and eventual failure within years rather than decades.
Tirupati Transformers Pvt. Ltd. manufactures purpose-built Solar Transformer Maharashtra units from our Greater Noida production facility, supplying EPC contractors, independent power producers, industrial rooftop solar developers, and agricultural solar project operators across Maharashtra with units specifically engineered for solar inverter duty service.
According to the Ministry of New and Renewable Energy (MNRE), India targets 500 GW of renewable energy by 2030 — with Maharashtra contributing a significant share through its solar parks, MIDC industrial rooftop programme, and PM-KUSUM agricultural solar scheme. Every project in this pipeline requires a reliable, certified solar transformer at its electrical core.
For full technical specifications of our solar inverter duty transformer range, visit our Solar Inverter Duty Transformer product page.
Solar inverters use IGBT-based switching to convert DC from PV panels into AC power. This switching process generates significant harmonic currents — 5th, 7th, 11th, and 13th order being most significant — which cause additional heating in standard transformer windings and cores that were designed only for sinusoidal utility loads.
Every Solar Transformer Maharashtra unit we manufacture is K-factor rated — designed with specially configured windings that handle inverter harmonic currents without overheating. We specify K4, K9, or K13 rated windings based on your inverter’s harmonic profile, ensuring the transformer runs within safe temperature limits throughout its 25-year project life.
A solar transformer starts each day at zero load, ramps to full capacity within two hours of sunrise, operates at variable load through the day as irradiance fluctuates, then returns to zero at dusk — repeating this cycle every single day for 25 years. This daily thermal cycling creates mechanical and insulation stress that accumulates over thousands of cycles.
Our Solar Transformer Maharashtra units use low-loss CRGO silicon steel cores and precision copper windings with Class F or Class H insulation — selected to withstand this thermal cycling without insulation degradation throughout the project’s designed 25-year lifetime.
Your solar transformer remains energized overnight even when no solar generation occurs — meaning no-load losses run for 12 to 14 hours daily when the transformer is producing no revenue. Over a 25-year project life at Maharashtra’s current solar tariff rates, even a small reduction in no-load losses delivers meaningful improvement in project IRR.
We offer amorphous core construction as an option for our Solar Transformer Maharashtra units — delivering up to 70% lower no-load losses than standard CRGO core designs, directly improving your project’s annual energy yield and financial returns. This option is particularly valuable for rooftop solar projects in Mumbai and Pune where electricity tariff rates make every unit of saved energy financially significant.
Before production begins, our engineering team reviews your inverter datasheet, site irradiance profile, grid connection voltage, and Maharashtra DISCOM interconnection requirements. Every Solar Transformer Maharashtra unit we manufacture is designed for your specific project — not adapted from a standard distribution transformer specification.
We use high-grade Cold Rolled Grain Oriented (CRGO) silicon steel laminations, step-lap assembled with precision jigging to minimize air gaps and reduce core losses. For amorphous core units, we use Metglas-type amorphous ribbon cores processed under controlled conditions to maintain their ultra-low loss properties. According to Bureau of Indian Standards IS 2026, core loss performance is a key acceptance criterion — our cores consistently meet or exceed IS 2026 limits.
Primary and secondary windings are wound using high-conductivity electrolytic copper with Class F or Class H insulation materials — NOMEX paper, silicon varnish, and fibreglass components selected for their thermal stability under repeated daily cycling. Winding transposition and interleaving are designed to minimize eddy current losses caused by harmonic currents from the solar inverter.
All oil-type units undergo vacuum oven drying before oil filling — removing all residual moisture from winding insulation before the transformer is filled with IS 335 compliant transformer oil under vacuum. This process is critical for achieving the high dielectric strength and low moisture content that determines long-term insulation reliability.
Every Solar Transformer Maharashtra unit undergoes full factory acceptance testing per IEC 60076 and IEC 60076-11 before dispatch — including winding resistance, turns ratio, vector group verification, insulation resistance, induced overvoltage, separate source withstand, no-load loss, load loss, and partial discharge measurement. Complete test reports are provided at dispatch for your DISCOM grid connectivity approval documentation.
Large ground-mount solar farms in Solapur, Osmanabad, Latur, Akola, and Buldhana districts — where Maharashtra’s highest solar irradiance zones attract utility-scale developers — use multiple Solar Transformer Maharashtra units per project, one per central inverter cluster, to step up power to 33 KV for grid injection. Our units for utility-scale applications are supplied with IP54 outdoor enclosures, OCTC tap changers, and full CEA grid connectivity compliance documentation.
For pooling substation and grid-side step-up requirements at utility-scale Maharashtra solar projects, our Power Transformer range covers 11 KV to 66 KV applications up to 10 MVA.
Maharashtra’s MIDC-managed industrial estates — Butibori Nagpur, Chakan Pune, Taloja Navi Mumbai, Ambad Nashik, Waluj Aurangabad, and Kagal-Hatkanangale Kolhapur — house thousands of large manufacturing units adopting rooftop solar under MSEDCL’s net metering programme. These installations require compact, efficient solar step-up transformers sized from 100 KVA to 2000 KVA to match their rooftop PV system capacity.
For rooftop solar on occupied industrial buildings where oil-filled transformers are restricted indoors, we supply dry-type variants of our Solar Transformer Maharashtra range. Our Cast Resin Transformer technology provides the same solar inverter duty performance in a fire-safe, oil-free construction suitable for indoor installation within factory buildings.
Maharashtra is one of PM-KUSUM Component A and B’s most active states, with thousands of agricultural solar pumping installations planned across the state under the Maharashtra Energy Development Agency (MEDA) implementation programme. According to MNRE’s PM-KUSUM scheme guidelines, each decentralised solar pump feeder project requires a certified solar transformer for grid or off-grid connection.
Our Solar Transformer Maharashtra units for PM-KUSUM applications are compact, cost-optimised, and supplied with all required IS 2026 and IEC 60076 test documentation for scheme compliance and MSEDCL approval.
Hospitals, government buildings, universities, and municipal corporations across Maharashtra — Mumbai, Pune, Nagpur, and district headquarters — are installing rooftop solar under state government and Smart Cities Mission incentive programmes. For these applications, our dry-type VPI Transformer variants provide solar inverter duty performance with oil-free construction appropriate for occupied institutional buildings.
For complete solar plant electrical infrastructure including HT cable laying, switchgear installation, and grid synchronisation in Maharashtra, our Electrical Turnkey Projects team provides end-to-end execution.
Every Solar Transformer Maharashtra unit we supply for grid-connected applications meets the requirements of the Central Electricity Authority (Technical Standards for Connectivity to the Grid) Regulations and MSEDCL’s technical requirements for solar plant interconnection — including Dyn11 vector group for harmonic isolation, defined short-circuit withstand capability, and protection coordination compatibility with MSEDCL’s relay settings.
Our factory test reports and type test certificates are accepted by MSEDCL, MAHAGENCO, and Maharashtra’s distribution companies for grid connectivity approval documentation — simplifying your regulatory approval process and avoiding delays to project commissioning.
Select a Solar Transformer Maharashtra unit rated equal to or slightly above your inverter’s total AC output in KVA. For example, a 500 kWp rooftop system with a 450 kW inverter operating at unity power factor requires a 500 KVA transformer. For string inverter systems with multiple inverters, the transformer KVA matches the combined inverter AC output. Contact our engineers with your inverter datasheet for a precise recommendation.
Yes. All our Solar Transformer Maharashtra units are supplied with IS 2026, IEC 60076, and IEC 60076-11 test documentation required for MSEDCL net metering and open access interconnection approval. We regularly supply transformers for net metering projects across Maharashtra’s industrial and commercial consumer categories.
MSEDCL and CEA regulations require Dyn11 vector group as standard for solar inverter transformer applications — providing 30° phase shift between primary and secondary, preventing triplen harmonic propagation to the HT grid, and providing a neutral point on the LV side for inverter earthing. Our standard Solar Transformer Maharashtra units are supplied with Dyn11 as default.
Yes. We are an active supplier for PM-KUSUM Component A and Component B projects across Maharashtra — with all required IS 2026, IEC 60076, and scheme-specific documentation for MEDA and MSEDCL submission. Contact us with your PM-KUSUM project details for a scheme-compliant quotation.
Standard Solar Transformer Maharashtra units dispatch within 8 to 12 weeks from order confirmation. Transit time from our Greater Noida facility to Maharashtra locations is 2 to 4 days by road. For projects with fixed commissioning deadlines, share your schedule at enquiry stage and we will confirm whether your timeline is achievable within our production plan.
Yes. For large utility-scale and industrial solar projects in Maharashtra, our technical team provides on-site pre-commissioning testing, oil commissioning, protection relay verification, and energisation support. For smaller rooftop projects, we provide detailed commissioning guidelines and remote technical support throughout the energisation process.
All units carry a standard 2-year manufacturer warranty covering defects in materials and workmanship. Annual Maintenance Contracts are available for ongoing preventive maintenance — including oil sampling, insulation resistance testing, and thermal imaging — throughout the transformer’s service life. See our Services page for full AMC scope.
Every Solar Transformer Maharashtra unit we supply is designed from the outset for solar inverter duty — with K-factor rated windings, harmonic-tolerant insulation, low no-load losses, and Dyn11 vector group as standard. We do not adapt standard distribution transformers for solar applications — a practice that leads to overheating and reduced service life.
All units comply with IS 2026, IEC 60076, and IEC 60076-11 — with factory acceptance test reports, partial discharge test results, and type test certificates provided at dispatch. This documentation package supports your MSEDCL grid connectivity approval, PM-KUSUM scheme compliance, and project lender technical due diligence requirements.
As a direct manufacturer supplying from our Greater Noida production facility, we eliminate every distributor margin from our pricing — delivering competitive transformer costs that improve your Maharashtra solar project’s financial returns without compromising on copper quality, core material, or testing rigour.
For Maharashtra solar developers and EPC contractors executing multiple projects simultaneously, we provide consolidated supply of multiple Solar Transformer Maharashtra units on coordinated delivery schedules — simplifying procurement, ensuring design consistency across projects, and reducing coordination overhead.
Explore our complete range: Distribution Transformer | Compact Substation | Servo Voltage Stabilizer | Converter Duty Transformer
Whether you are developing a utility-scale solar farm in Solapur, installing industrial rooftop solar in a Pune MIDC unit, or executing a PM-KUSUM agricultural project in Nashik — Tirupati Transformers will supply the right Solar Transformer Maharashtra unit, certified, tested, and delivered on your project schedule.
Each Solar Inverter Duty Transformer obligation transformer from Tirupati Transformers is engineered to satisfy strict first-rate and ordinary overall performance necessities, ensuring dependable and efficient integration with renewable power structures.