Solar Power Plant System
Solar power plant transformers are critical components used to connect solar photovoltaic (PV) systems to the electrical grid. They step up the low voltage output from solar inverters (typically 400–690V) to medium or high voltages (11–33 kV) required for grid transmission.These transformers are specially designed to handle inverter-based loads, high harmonic content, and varying load conditions typical of solar plants.
Product Details
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Features
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Specification
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Type
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Inverter Duty / Step-Up Transformer
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Function
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Steps up inverter output voltage (400–690V) to grid voltage (11–33 kV)
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Rated Power Capacity
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100 kVA to 10 MVA (customizable)
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Frequency
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50 Hz / 60 Hz
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Cooling Type
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Oil-immersed (ONAN / ONAF) or Dry-type (AN / AF)
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Phase
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Three Phase
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Efficiency
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≥ 99% at rated load
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Noise Level
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< 55 dB at 1 meter (meets IEC/IS standards)
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Testing Standards
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IS 1180, IEC 60076, IEEE C57.12 series
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Design Life
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20–25 years with regular maintenance
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Mounting Type
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Ground-mounted or skid-mounted
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Applications
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Utility-scale solar farms, hybrid renewable systems, microgrids, commercial PV installations
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Protection
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Buchholz relay, Pressure relief valve, Temperature sensors, Oil level gauge
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Key Features
- Designed for minimal losses and maximum energy transfer efficiency.
- Capable of handling harmonics and DC bias generated by inverters.
- Equipped with efficient oil or dry-type cooling systems to withstand hot, outdoor environments.
- Suitable for dusty and humid climates, with anti-rust coatings.
- Low noise levels meeting IEC and IS standards.
- Uses non-toxic insulation materials and low-loss core designs.
Quality & Testing
- No-load and load loss measurements
- Temperature rise test
- Harmonic analysis for inverter operation
- IS 1180 / IEC 60076 / IEEE C57 series
- Noise and vibration testing
Applications
- Utility-scale solar power plants (on-grid and off-grid).
- Hybrid energy systems combining solar, wind, or battery storage.
- Microgrids for remote or rural electrification.
- Commercial solar installations with grid tie-ins.
- Other Sectors – Cold Storage, Injection Molding, Foundries
Solar Power Plant system
Beta Power Controls in India?
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Voltage ranges and models tailored to client needs
High Efficiency
98% energy efficiency, reduces power loss
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After-Sales Support
Installation, service, and technical assistance
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Frequently Asked Questions
Because solar inverters generate harmonics and fluctuating loads, standard transformers can overheat. Inverter-duty transformers are designed to handle these variations safely.
The primary side is usually 400–690V, and the secondary side ranges from 11–33 kV, depending on the grid requirement.
Both oil-immersed (ONAN/ONAF) and dry-type (AN/AF) cooling systems are used, depending on installation location.
With proper maintenance, a solar transformer can last 20–25 years, matching the life of solar PV modules.
Yes, multi-winding inverter-duty transformers can connect several inverter outputs to a common grid interface.