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SG6250-6800HV-MV Grid Connected PV Inverter
SG6250-6800HV-MV Grid Connected PV Inverter

SG6250-6800HV-MV Grid Connected PV Inverter

6.25-6.8MW medium voltage substation grid connected central inverter, medium voltage (MV) output (20kV/35kV), designed specifically for large-scale solar power plants.

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Description

HIGH PERFORMANCE

Advanced three-level topology – Achieves 99% max. efficiency for optimal energy harvest.

Robust thermal management – Ensures full-power operation at 45-50°C.

INTELLIGENT OPERATION & MAINTENANCE

Real-time monitoring – Integrated voltage/current sensors enable remote diagnostics and fault analysis.

Modular architecture – Simplified servicing with hot-swappable components.

User-friendly interface – External touchscreen for on-site control and data access.

COST EFFICIENCY

Containerized design – 40-foot shipping container reduces logistics and installation expenses.

1500V DC system – Lower BOS (Balance of System) costs versus traditional solutions.

All-in-one integration – Combines MV transformer, switchgear, and LV auxiliary supply in one unit.

Night-time reactive power (Q at night) – Optional grid support during non-generation hours.

GRID COMPLIANCE & SUPPORT

Certified to IEC standards (62271-202, 62271-200, 60076) for safety and interoperability.

Advanced grid resilience – LVRT/HVRT (Low/High Voltage Ride-Through) and dynamic P/Q control.

Grid-friendly – Programmable active/reactive power and ramp rate control.


Type DesignationSG6250HV-MVSG6800HV-MV

Input ( DC )

  • Max. PV input voltage1500 V
  • Min. PV input voltage / Startup input voltage875 V / 915 V
  • MPP voltage range875 V – 1300 V
  • No. of independent MPP inputs4
  • No. of DC inputs32 / 36 / 44 / 48 / 56 (Max. 48 for floating system)
  • Max. PV input current2 * 3997 A
  • Max. DC short-circuit current2 * 10000 A
  • PV array configurationNegative grounding or floating

Output ( AC )

  • AC output power2 * 3125 kVA @ 50 ℃; 2 * 3437 kVA @ 45 ℃2 * 3437 kVA @ 45 ℃
  • Max. inverter output current2 * 3308 A
  • Max. AC output current199 A
  • AC voltage range20 kV – 35 kV
  • Nominal grid frequency / Grid frequency range50 Hz / 45 Hz – 55 Hz, 60 Hz / 55 Hz – 65 Hz
  • Harmonic (THD)< 3 % (at nominal power)
  • Power factor at nominal power / Adjustable power factor> 0.99 / 0.8 leading – 0.8 lagging
  • Feed-in phases / AC connection3 / 3-PE
  • Max. efficiency / European efficiency99.0 % / 98.7 %

Transformer

  • Transformer rated power6250 kVA6874 kVA
  • Transformer max. power6874 kVA
  • LV / MV voltage0.6 kV / 0.6 kV / (20 – 35) kV
  • Transformer vectorDy11y11
  • Transformer cooling methodONAN
  • Oil typeMineral oil ( PCB free )

Protection & Function

  • DC input protectionLoad break switch + fuse
  • Inverter output protectionCircuit breaker
  • AC MV output protectionCircuit breaker
  • Surge protectionDC Type I + II / AC Type II
  • Grid monitoringYes
  • Ground fault monitoringYes
  • Insulation monitoringYes
  • Overheat protectionYes
  • Q at night functionOptional

General Data

  • Dimensions ( W * H * D )12192 mm * 2896 mm * 2438 mm
  • Weight29 T
  • Degree of protectionInverter: IP65 / Others: IP54
  • Auxiliary power supply5 kVA ( optional: max. 40 kVA )
  • Operating ambient temperature range-35 ℃ to 60 ℃ ( > 50 ℃ derating )
  • Allowable relative humidity range0 % - 100 %
  • Cooling methodTemperature controlled forced air cooling
  • Max. operating altitude1000 m ( standard ) / > 1000 m ( optional )
  • DisplayTouch screen
  • CommunicationStandard: RS485, Ethernet; Optional: optical fiber
  • ComplianceCE, IEC 62109, IEC 61727, IEC 62116, IEC 62271-202, IEC 62271-200, IEC 60076
  • Grid SupportQ at night ( Optional ), L/HVRT, active & reactive power control and power ramp rate control


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