Solar Power Plant (SPP) Transformers
- Used to step up inverter output voltage to MV level for feeder or grid connection
- Must handle high-frequency harmonics and cyclic loading due to irradiance variations and MPPT switching
- Designed for outdoor installations with ONAN/ONAF/KNAN cooling
- Rated from 250 kVA to 10 MVA, can be designed with double secondary or customer needs based configurations
- Equipped with electrostatic shielding to mitigate inverter-induced harmonics
- Compatible with natural ester fluids (FR3) for eco-friendly solar installations
- Compliance with IEEE C57, IEC 60076, and local interconnection codes (RETIE, UL 1741-SA, etc.)
- Split winding for central or string inverter systems
Optional design conditions:
- K-factor optimized design available to prevent overheating due to harmonic currents
- Windings and core sized with increased thermal margin for non-sinusoidal load current
- Optional low-capacitance winding arrangements to reduce resonance with switching frequencies
- Finwalls or Radiator design customized based on project site ambient conditions
- Optional fan control units (thermostatic or digital) for optimized cooling at varying load levels
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