THERMAL POWER PLANT “MARITZA EAST 3”

• Diagnostics of phase R of autotransformer АТ-400/231/31.5 kV;
• Replacement of bushings 400 kV and 110 kV, repair of the cooling system, and thermo-vacuum treatment of the insulation of transformer 250 MVA, 400/110/38 kV;
• Assembly of phase Т of transformer 400/231/31.5 kV;
• Repair and upgrading of block transformer 200 MVA 220/15.75 kV;
• Repair and reconstruction of transformer 25 MVA, 15,75/6,3 – 6,3 kV.
  

THERMAL POWER PLANT “BOBOV DOL”

• Diagnostics of autotransformer 200 MVA, 220/110 kV;
• Diagnostics of transformer 250 MVA, 220/15.75 kV and transformer 32 MVA, 15.75/6.3 kV;
• Diagnostics of turbo-generator type ТВВ-200-2А together with АО “ELEKTROSILA”- Russia.

THERMAL POWER PLANT “VARNA”

• Repair and upgrading of autotransformer 200 MVA, 220/121 kV;
• Reconstruction and replacement of on-load tap changers of transformers for proper needs;
• Repair of transformer ТДЦ 250 MVA, 110/15.75 kV;
• Creation of technology and elaboration of sections for high-voltage motors;
• Capital repair of block transformer type ТДЦ 250 MVA, 220/15,75 kV.
  

Substation “TSAREVETS”

• Diagnostics and replacement of bushings of transformer 250 MVA, 400/110 kV.

Substation “STOLNIK”

• Capital repair of autotransformer 250 MVA, 400/110 kV.
  

“KREMIKOVTZI” STEEL PLANT

• Diagnostics of transformer 250 MVA, 400/110/38 kV;
• Emergency repair of power transformer 75 MVA, 110/21/6.3 kV;
• Replacement and assembly of power transformer 4Т in Main Step-down Substation-4:63 MVA, 110 kV;
• Diagnostics of the synchronous motor status, type СДСЗ, 19 500/6 000.

ASSAREL –“MEDET”

• Repair and upgrading of transformer 40 MVA, 110/6/6 kV.
  

“KUMERIO-MED”

• Capital repair of power transformer 125 MVA, 110/6.3 kV.