Test Facilities

Končar’s laboratories provide the means for testing activities which in part serve as a fundamental prerequisite for research and development. Our transformers have been validated according to all relevant standards, giving them an evident global character. The testing chain comprises a High Voltage and a Medium Voltage laboratory and several in-process testing points.

Our in-house testing capabilities are as follows:

  • AC withstand voltage tests up to 1200 kV
  • Accuracy class tests for instrument transformers up to 800 kV
  • Partial discharge (PD) measurement with < 2 pC noise levels

All relevant and required type testing can be performed at the Institute’s laboratories.

The Institute’s capabilities are as follows:

  • Lightning-impulse voltage up to 2400 kV
  • Chopped lightning-impulse voltage up to 2400 kV
    (linearly rising front-chopped impulse, steepness up to 3000 kV/µs)
  • Switching-impulse voltage up to 1600 kV
  • Short-circuit current testing up to 100 kA
  • Alternating voltage up to 1000 kV
  • Direct voltage up to 300 kV
  • Dielectric tests in wet conditions
  • Temperature rise test

Department for quality assurance, inspection, testing of instrument transformers and calibration of equipment for accuracy class measurement of instrument transformers possesses three accreditation certificates.

Inspection section of Končar-Instrument transformers Inc. is accredited by HAA (Croatian Accreditation Agency) as Inspection body type C, according to HRN EN ISO/IEC 17020:2012.

Section of testing and calibration laboratory is accredited by HAA (Croatian Accreditation Agency) for testing of instrument transformers and calibration of equipment for accuracy class measurement of instrument transformers according to HRN EN ISO/IEC 17025:2007.

 HRN EN ISO-IEC 17020:2012

HRN EN ISO-IEC 17025:2007

HRN EN ISO-IEC 17025:2007