40 MVA Transformer for Solar Park


  • Primary Voltage Ratings: 110kV
  • Secondary Voltage Ratings: 20kV
  • CONNECTION TYPE: YNd11
  • TYPE: Conservator Type
  • BIL: 550/125kV
  • Standards: IEC
  • Application: Solar Park
  • Power Rating: 40MVA
  • Cooling Method: ONAN/ONAF

The 40 MVA transformer is utilized in a 50 MWac solar park in eastern Albania. This step-up transformer connects to the government’s 110 kV substation, with a primary voltage of 20 kV and a secondary voltage of 110 kV. It features an ONAN/ONAF cooling method and an OLTC (On-Load Tap Changer) with 17 taps adjustment positions (±8*1.5%). The transformer is designed and manufactured in accordance with IEC standards.


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Characteristics Data Unit
Rated Power @ONAN 40  MVA
@ONAF 50  MVA
Cooling method ONAN/ONAF  
No Load Rated Voltages ( HV/LV ) 110 / 20 kV
Voltage Tapping @ HV 17 taps; (+8 ; -8) x 1,50% On Load  
Vector Group YNd11  
Frequency 50  Hz
Maximum Ambient Temperature 40  °C
Average Winding / Top Oil Temprature Rise Limits 65 / 60  
Altitude <1200 m
No-Load Losses @1.0xUn Po 29  kW
Load Losses @75 °C, 110/20 kV & 50 MVA Pk 199  kW
Short Circuit Impedance @75 °C, 110/20 kV & 50 MVA Uk 11  %
No-Load Current Io 3 %
No-Load Sound Pressure Level @1 m ONAN LpA 75  dB
   
Insulation Levels BIL (kV) AC (kV)
HV 550  230 
HV-N 250  95 
LV 125  50 
   
Bushing Types and Terminations  
HV   Condenser Open Air
HV-N   DIN Open Air
LV   DIN Open Air
HV Bushing
LV Bushing
On-Load Tap Changer
Oil Temperature Indicator
Winding Temperature Indicator
Oil Level Indicator (Main Tank)
Oil Level Indicator (OLTC Conservator)
Buchholz Relay (Main Tank)
Buchholz Relay (Seperator)
Pressure Relief Device
Control Cabinet
Automatic Voltage Regulator (AVR)
Breather (Main Tank)
Breather (OLTC)
Cooling Fans
Separator
Thermal Image Current Transformer
Impact Recorder

Daelim Transformer has specialized in transformer design and production for the international market for over 20 years. Our team possesses extensive technical expertise and experience. Whether your project is located in North America, Central and South America, Europe, Australia, or other regions, we are equipped to provide reliable, safe, and competitive transformer solutions.

Scope of Power Transformer Supply

  • Standards: IEEE/ANSI, CSA, IEC, BS, AS/AZS
  • Power Rating: Up to 500 MVA
  • High Voltage: Up to 345 kV
  • Regions: North America, South America, Australia, Europe, etc.

For detailed information, please contact Daelim Transformer.

 

40MVA Transformer Manufacturing

40 mva transformer manufacturing

 

Finished Transformer In The Workshop

40mva transformer

 

40 MVA Transformer Testing

40 mva transformer testing

 

40 MVA Transformer Package and Shipping

40mva transformer package and shipping
 

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