service(HIGH Voltage)

Type of test

  • Measuring ratio transformation of current transformers (CTs)
  • Measurement of the ratio transformation of the TPs’ BUSHING TCs
  • Checking of the polarity of the secondary CTs
  • Measurement of the resistance of the secondary windings CTs
  • Measurement of the resistance of the secondary circuits CTs
  • Measurement of the secondary load CTs
  • Measurement of the magnetization curve of CTs and angled point
  • Measurement of the ratio transformation of CT Rogowski
  • Insulation measurement of the CTs
  • Measurement of the ratio transformation voltage-transformers (VTS )
  • Check the polarity of the secondary of VTs
  • Measurement of the resistance of the secondary windings VTs
  • Measurement of the resistance of the secondary circuits VTs
  • Measurement of the secondary charge of VTs
  • Insulation measurement of the VTs

Type of tests

  • Measurement of the ratio transformation by tap changer
  • Measurement of the winding resistance
  • Measurement of the ratio transformation of the TCS bushings
  • Control of contact fingers by tap changer
  • Checking of operating of the internal protective
  • Control of the low-voltage cabinet and functional tests (Control trimmer, Ventilation ...)
  • Insulation measurement of the PTs

Type of tests

  • Measurement of the static resistance of the circuit breakers
  • Measurement of the dynamic contact resistance of the circuit breakers
  • Current measurement of the tripping and closing coils
  • Measurement of the opening and closingtime delay of the main circuit-breakers
  • Checking of the operating of the auxiliary circuit-breakers contacts
  • Checking of the control panel and testing functionality
  • Control locks
  • Measurement of the resistance disconnectors contacts
  • Checking of the control panel and functional testing of the disconnectors
  • Disconnectors locking control

Type of tests

  • Measurement of the capacitance of the capacitors elements
  • Measurement of insulation of the capacitor elements
  • Checking of the cabinet control and protection, functional testing
  • Control locks

Type of tests

  • Measurement of the resistance
  • Measurements on CT semi-neutral and resisting earth
  • Control of the current circuits

Type of tests

  • Measurement of the windings resistance
  • Insulation measurement
  • Inspection and testing operation of internal protections