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Name of Project: Repair of transformers of Unit 1, Unit 2, Unit 3, and Unit 4 at Contour Global Maritsa East 3 TPP
   
Contractor: Contour Global Maritsa East 3 AD
   
Description:

Scope of this order includes repair of transformers of Unit 1, Unit 2, Unit 3, and Unit 4 at Contour Global Maritsa East 3 TPP, as part of the Repair Program the Power Plant. Aim of the Program is to restore reliability and project parameters of the facilities and the power units – productivity, efficiency, etc.

   
Lead in exploitation: 06.2015
   
Finished Activities:
  • Disconnection of transformers at LV and HV side;
  • Taking oil samples;
  • Revision of fans and oil-pumps; external cleaning;
  • Filling up transformer oil if necessary;
  • Control measuring of parameters: HV and LV insulation, idle running losses, transformer coefficient, tangent delta, ohmic resistivity, HV test of 15.75 kV busbar;
  • Connection of transformers;
  • Revision of current transformers connections;
  • Test-run of fire extinguishing system;
  • Assistance during 72-hours test-run.
   
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