The IEC60076 Factory Customized MV HV Power Transformer is a high-performance, hermetically sealed oil-immersed three-phase two-winding transformer engineered specifically for solar photovoltaic (PV) and renewable energy applications. With a rated capacity range spanning 100kVA to 2500kVA, this transformer delivers reliable voltage step-up or step-down conversion for medium-voltage (MV) and high-voltage (HV) power distribution systems.
Designed and manufactured in full compliance with IEC60076 international standards, this transformer incorporates a fully sealed oil-immersed structure that isolates the insulating oil from external air and moisture, significantly extending the service life of insulation materials and ensuring stable operation under the most demanding environmental conditions.
| Parameter | Specification |
|---|---|
| Standard | IEC60076, GB1094, ISO9001 |
| Rated Capacity | 100kVA – 2500kVA |
| Phase | Three-phase |
| Winding | Two-winding |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Sealing Structure | Hermetically sealed / Fully sealed oil-immersed |
| Voltage Regulation | Off-circuit tap-changer (non-excitation voltage regulation) |
| Voltage Class | Up to 35kV and below |
| Vector Group | Dyn11 / Yyn0 (customizable) |
| Frequency | 50/60Hz |
The transformer body consists of the core assembly, oil tank, radiator, high and low voltage side insulating bushings, oil level gauge, pressure relief valve, temperature controller, gas relay, and dehydrating breather, forming a complete and robust power distribution solution.
This transformer is purpose-built for photovoltaic power generation systems, offering seamless integration into:
Utility-scale solar PV power plants – Efficiently steps up low-voltage generation (e.g., 0.4kV) to medium-voltage grid levels (up to 35kV or higher)
Commercial and industrial rooftop solar installations – Supports scalable energy needs from 100kVA to 2500kVA
Battery energy storage systems (BESS) – Reliable power conversion for storage integration
Containerized mobile power distribution systems – Compact footprint for flexible deployment
Remote off-grid power supply projects – Durable performance in isolated locations
The reinforced winding structure withstands frequent power fluctuation impacts characteristic of wind and photovoltaic systems, ensuring stable output under intermittent generation conditions.
IEC60076 Compliance & Quality Assurance – Manufactured under strict quality control systems based on ISO9001, ISO14001, and ISO45001, with full compliance to IEC60076 and IEC60072 standards. Each transformer undergoes rigorous testing including impulse voltage tests, temperature rise tests, and short-circuit withstand tests per IEC requirements.
Hermetically Sealed Construction – The fully sealed structure eliminates the need for a traditional oil conservator (for capacities below 630kVA), with oil volume changes automatically compensated by the elastic expansion of corrugated tank fins. This design completely isolates the transformer from atmospheric exposure, preventing oil oxidation and moisture ingress.
High Efficiency & Low Loss – Advanced design with optimized current density, increased oil duct channels within coils, and strategically arranged radiators minimizes copper-oil temperature differentials and enhances overload capability. The transformer achieves low no-load and load losses, meeting national energy efficiency standards.
Robust Safety Protection – Equipped with a comprehensive safety system including pressure release valve, gas relay (Buchholz relay), temperature monitoring module, and oil level gauge, enabling real-time fault monitoring and rapid protection response to prevent equipment damage from overload or short circuits.
Compact & Integrated Design – As a core component of compact substations, this transformer achieves high integration with switchgear, reducing equipment footprint by over 40% compared to conventional split solutions and significantly lowering civil construction costs.
We offer comprehensive customization options to meet your specific project requirements:
Capacity: 100kVA – 2500kVA (custom capacities available upon request)
Voltage Ratio: Customizable input/output voltage combinations (e.g., 0.4kV/10kV, 0.69kV/20kV, 0.4kV/35kV, etc.)
Vector Group: Dyn11, Yyn0, or other configurations
Impedance Voltage: Customizable per project specifications
Tapping Range: Customizable off-circuit tap changer ranges
Insulation Level: Customizable per system voltage requirements
Accessories: Oil conservator (for capacities ≥630kVA), specialized bushings, enhanced coatings for corrosive environments
All custom designs are engineered and tested in accordance with IEC60076 standards to ensure reliable performance.
Transformer pricing varies based on capacity, voltage ratio, protection level, and customization requirements. Below are approximate reference prices .
Final quotes are subject to current material costs, copper prices, and specific technical specifications.
| Capacity | Type | Approximate Price Range (USD) |
|---|---|---|
| 100kVA | Oil-immersed | Custom quotation |
| 500kVA | Oil-immersed | $400 – $11,00 |
| 1000kVA | Oil-immersed | Custom quotation |
| 2500kVA | Oil-immersed (S13 series) | ~$16,400 |
Note: Prices are for reference only. Final pricing depends on specific technical specifications, customization requirements, and order quantity. Please contact our sales team for an accurate quotation.
IEC60076 compliant manufacturing with international quality certifications
Factory-direct pricing with no middleman markups
Full customization capabilities for voltage, capacity, and configuration
Comprehensive testing including routine tests, type tests, and special tests per IEC standards
Global shipping with professional export packaging
Technical support and after-sales service
Contact us today to discuss your transformer requirements. Provide your project specifications (capacity, voltage ratio, vector group, environmental conditions) and receive a customized quotation within 24 hours.
