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Our expertise

Energy infrastructure

Equans is a specialist in the supply of investment units and overhauls of substations and transformer stations without voltage limitation and line cable structures, including the installation of cable fittings in the voltage level of 1 to 110 kV.

Engineering and consulting

  • design activity: preparation of project documentation from the level of zoning permits, through building permits to the implementation of buildings
  • electrical engineering for energy, construction and industry
  • comprehensive management and management of buildings, starting with consultation and expert opinions, through engineering studies and the provision of equipment and materials to the complex implementation, including the construction part
  • engineering: providing all documents for the issuance of zoning permit, building permit, planning consent, building notification, building approval, etc.
  • geodesy: surveying works, evaluation of the accuracy of geodetic methods, preparation of geodetic documents
  • realization of optical networks: from design proposals through laying and recovery of the optical link

Supply-realisation activities

  • delivery, reconstruction and installation of equipment from leading manufacturers in accordance with prescribed technological procedures

  • installation of concrete substations 22/0,4kV

  • dismantling and disposal of equipment

  • automatic substitution systems and reactive power compensation of HV and VVN

  • supply and implementation of protection and control systems

  • command and substation equipment, data acquisition and remote data transmission in networks

  • calculations, studies and design of protection and control systems

  • commissioning of equipment, training of user operators

  • revision, service and maintenance

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Cable laying, including splicing, relocation and reconstruction of networks

  • installation of 110 kV cable fittings

  • layout of 110 kV cables with a special tractor for laying

  • 22 kV cables

  • industrial wiring

  • building wiring

  • commissioning of equipment, training of user operators

  • revision, service and maintenance

  • complex fibre optic cable installation

For more information on revisions, measurements and diagnostics

Revision, measurement and diagnostics

  • revision of electrical equipment without voltage limitation, in environments without and with explosion hazard
  • revision of appliances and power tools
  • measurement of electrical quantities and analysis of harmonic components
  • tests with increased voltage up to 100kV
  • measurement of loss factor tg δ and partial discharges, polarization index measurements
  • cable tracing, cable fault localization using cable car
  • cable testing and diagnostics, thermal imaging
  • light intensity measurements according to EN 12 464
  • operational noise measurements in industrial environments
  • step and touch voltage measurements

Service and repair of electrical equipment

  • operating cable metering truck

  • power quality analysis in HV, MV and LV networks

  • measurement of backflow effects before commissioning of generating plants

  • detection of transients in LV, HV and HV networks

  • ensuring trouble-free operation of electrical equipment in continuous operation

  • measurement and adjustment of equipment

  • comparison of parameters with technical documentation and previous technical reports

  • replacing damaged and obsolete parts

  • supplying and operating emergency power supplies

  • repair of main home wiring