Delivery, installation and commissioning of electrical equipment for compensation of reactive power of the heavy industrial mining equipment at Mini Maritsa-Iztok – Troyanovo-1 and Troyanovo-3 Mines

Siemens EOOD


Assigned: 2016 / Completed: 2017


  • Reconstruction of existing 6 kV Switchgears by retrofit of circuit breakers type SCI-1: Installation of new draw-out 6 kV vacuum contactors, type 3TL8, Siemens make, to enable repeatedly switching of loads. Total number of installed new contactors – 106 pcs.
  • Installation and wiring 6 kV capacitors to the consumers with the purpose to improve the cos-f factor and the work efficiency of the heavy mining equipment (excavators, reloading stations, actuator stations, stackers) in Troyanovo-1 and Troyanovo-3 Mines. Number of installed capacitors – 143 pcs. 6 kV capacitors, and 20 pcs. 0.5 kV capacitors.
  • Commissioning works and putting the equipment installed under operational use.



 Certificate BG          Certificate EN