Technical Parameters & Ratings
IEC / ANSI CertifiedFactory Standard
| Rated Capacity | 4000 kVA |
|---|---|
| Primary Voltage (U1) | 11,000 V (11 kV) |
| Secondary Voltage (U2) | 415 V / 240 V (3-Phase 4-Wire) |
| Vector Group | Dyn11 |
| Rated Frequency | 50 Hz |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Primary Current (I1) | 69.98 A |
| Secondary Current (I2) | 5564.9 A |
| Guaranteed No-Load Loss (P0) | 3400 W |
| Guaranteed Load Loss (Pk at 75°C) | 25500 W |
| Short-Circuit Impedance (Uk) | 5.5% |
| HV Insulation Level | LI 75 / AC 35 (11kV Class) |
| Temperature Rise Limits | Top Oil ≤ 50K, Winding ≤ 55K (45°C Ambient) |
| Creepage Distance | ≥ 31 mm/kV (Outdoor Tropicalized Porcelain) |
| Core & Coil Weight | 5600 kg |
| Insulating Oil Weight | 3200 kg |
| Total Assembled Weight | 11200 kg |
| Overall Footprint (L×W×H) | 2500 mm × 1600 mm × 2600 mm |
| Governing Standards | IEC 60076, BS 171, SON NIS, NERC Code |
Technical Highlights
- This product combines dependable transformer platform design, flexible project configuration, and practical export-oriented construction. It is suitable for applications requiring stable electrical performance, configurable voltage ratios, outdoor durability, and documentation support for international project supply.
Application Scenarios
- Solar power plants
- Wind farm collector and grid interface systems
- Photovoltaic station and inverter interconnection projects
- Battery energy storage systems (BESS)
- Renewable energy substations and export EPC projects
Key Features
- 4000 kVA rated capacity for renewable interconnection, step-up, or project-side power conversion
- Designed for solar, wind, PV, or energy-storage power system applications
- Configurable voltage ratio for inverter-side, collector-side, or grid-side connection
- Oil-immersed construction for dependable cooling in outdoor renewable projects
- Project-oriented accessory and monitoring options available
- Suitable for IEC-based renewable projects and export EPC supply
Optional Configurations
- Low-voltage side rating and voltage ratio
- Frequency: 50 Hz or 60 Hz
- Vector group and tapping range
- Copper or aluminum winding
- Cooling method, accessory package, and monitoring option
- Tank structure, coating system, and special environmental adaptation
- Color, nameplate language, and document package
- Ambient temperature, altitude, and installation condition adaptation
Frequently Asked Questions
What is a PV grid-tie transformer used for?
It steps up the inverter output voltage to the grid connection level and provides isolation and impedance matching between the PV plant and the grid.
Is the transformer suitable for rooftop and commercial solar systems?
Yes. Units are available in ratings to suit both commercial rooftop and utility-scale ground-mounted installations.
How is efficiency optimized for daily cycling?
Core and winding design is selected to keep losses low across the typical daily loading profile of a PV plant.
Which grid codes can the transformer support?
The transformer is engineered to the voltage ratio, impedance and tap requirements of the applicable grid code; these are confirmed at design stage.
What documentation is supplied?
Routine test reports, outline drawings and nameplate data are supplied for each unit, supporting grid interconnection submission.
