PV Transformer

Transpower Electrical Equipment Co., Ltd. is one of the most reliable manufacturers and suppliers of pv transformer in China. Welcome to buy high quality customized products at competitive price from our factory. Contact us for quotation.

PV Transformers are precision-engineered for photovoltaic (PV) power generation and integrated energy storage systems (BESS). They deliver reliable voltage conversion between solar/storage inverters and medium-voltage collection networks before feeding power into the utility grid.

Unlike conventional distribution transformers, these units are specifically built to withstand strict inverter duty conditions, characterized by severe harmonic currents, high-frequency switching, daily thermal cycling, and continuous outdoor operation.

Based on extensive manufacturing experience in global renewable energy projects, each transformer is designed and produced according to IEC 60076 standards, with IEEE-compliant configurations readily available. Customized OEM/ODM solutions are provided for utility-scale solar farms, commercial & industrial (C&I) rooftop PV, battery energy storage systems, and hybrid microgrids.

Solar and energy storage plants operate under fundamentally different dynamics compared to traditional power grids:

Harmonic Distortion: PV inverters generate continuous harmonic currents that induce stray losses, leading to excessive thermal stress on windings.

Cyclic & Intermittent Loading: Rapid shifts in solar irradiance and power discharge cycles cause severe daily expansion and contraction of insulating materials.

To ensure long-term operational integrity (25+ year lifespan), our PV transformers feature optimized magnetic circuits, specialized conductor geometry, reinforced insulation systems, and enhanced thermal cooling. These design improvements significantly lower lifecycle maintenance costs and maximize plant uptime.

Engineered for Inverter Duty & Storage Integration
Optimized winding impedance, electro-static shielding (where required), and reinforced insulation minimize the destructive effects of harmonic currents and $dv/dt$ voltage spikes, protecting winding health and extending service life.

Exceptional Operating Efficiency
Built with high-permeability, cold-rolled grain-oriented (CRGO) silicon steel cores and high-purity copper/aluminum conductors. Designed to minimize both no-load (core) and load (copper) losses, achieving peak operating efficiency above 99% under rated operating conditions.

Advanced Thermal Management
Engineered specifically for extreme temperature fluctuations and high ambient environments. Optimized internal oil circulation pathing controls hotspot temperature rise, preserving insulation dielectric strength under peak load and continuous duty.

Rugged, All-Weather Outdoor Enclosure
Hermetically sealed or conservator-type tank designs prevent moisture ingress and oil oxidation. Heavy-duty C4/C5-M anti-corrosion surface coatings ensure long-term durability in harsh coastal, humid, desert, or industrial environments. High-altitude and extreme ambient temperature designs are available.

Full Project-Level Customization
Fully tailorable capacity, primary/secondary voltage ratings, multi-winding configurations (dual/split-secondary for multi-inverter connection), vector group, tap changers (OCTC/OLTC), cooling modes, protection accessories, and communication interfaces to match specific inverter and grid code requirements.

Consistent manufacturing precision is critical for utility-scale procurement. Our ISO-certified production process integrates automated core cutting, precision coil winding, vacuum drying, vacuum oil filling, and multi-stage quality control.

Comprehensive Factory Testing
Every transformer undergoes 100% routine testing before dispatch in accordance with international standards, including:
Voltage ratio and phase displacement tests
Winding resistance measurement
No-load loss and no-load current tests
Load loss and short-circuit impedance tests
Applied voltage and induced overvoltage withstand tests
Insulation resistance and dissipation factor measurements
Oil leak/pressure integrity testing

Engineered for modern medium-voltage renewable energy distribution, our transformers serve:
Utility-Scale Solar PV Power Plants
Commercial & Industrial (C&I) Rooftop Solar Systems
Standalone & Integrated Battery Energy Storage Systems (BESS)
Hybrid Wind-Solar-Storage Microgrids
Renewable Energy Transmission Substations
Designs fully support global grid codes, including European, North American, Asian, and Middle Eastern utility connection requirements.

We partner directly with electrical distributors, EPC contractors, and system integrators to streamline project delivery and reduce technical risks:

OEM & ODM Manufacturing: Complete private labeling and custom engineering.

Full Engineering Documentation: Detailed 2D/3D CAD drawings, schematic diagrams, nameplate data, and technical datasheets provided for project approval.

Complete Test Support: Routine Test Reports, Type Test Reports, and FAT facilitation.

Export-Grade Packaging: Heavy-duty seaworthy packaging engineered for long-distance international transit.

Technical Consultation: Dedicated engineering assistance from design review to installation guidance.

Our structured procurement workflow ensures zero miscommunication and full compliance with project specifications:

Technical Requirement Review ➔ Engineering Proposal & Calculation ➔ Drawing Approval ➔ Manufacturing ➔ Routine Factory Testing ➔ Optional FAT Witness ➔ Export Packaging ➔ On-Time Delivery

To help our engineering team prepare an accurate technical proposal and commercial quotation, please provide the following project details:
Rated Capacity (kVA/MVA)
Inverter AC Output Voltage & Grid Connection Voltage
Number of Inverter Inputs (Single, Dual, or Multi-winding requirement)
System Frequency (50Hz / 60Hz)
Site Conditions (Ambient temperature range, altitude, corrosion level)
Preferred Cooling Method & Accessories
Applicable Technical Standards (IEC, IEEE, etc.)

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