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Other competences

In the field of on- and offshore power cable networks, our expert team is able to support the process of determining the requirements for designing, installation testing and service life management of export- and inter-array cable systems. For on- and off-shore power cable connections onsite hv solutions provides the following core competences:

Technical competences

  • OTDR of fibre optic cable testing
  • TDR test on cable cores
  • Insulation resistance test
  • Sheath integrity test
  • Phase Verification test
  • Function test of bonding/earthing system
  • Damped AC after-installation- and diagnostic testing including partial discharge and dissipation factor estimation of inter-array cable strings (up to 66 kV) and export cable circuits (up to 230 kV)

Technical competences

Man power competences

Man-power competences

  • Highly qualified specialists with over 10 years of field-testing experiences
  • Offshore trained test engineers with GWO certificate (Sea Survival, First Aid, Working at Heights, Manual Handling, Fire Awareness) and HUET with CAEBS, etc

Expertise competences

  • Measurement data evaluation and analysis
  • Measurement results interpretation
  • Data reporting including recommendation
  • Data storage and evaluation for condition-based maintenance

Expertise competences

Condition assessment of power transformers and gas insulated switchgear

Onsite hv solutions dedicated advanced tools and trained test engineers are vital in supporting customers with their service life maintenancetesting  and asset management of power transformers and gas insulated switchgear:

Power transformersGas insulated switchgear
Insulation systemTap changerTransformer windingsInsulation system
  • Dissolved gas analysis (DGA)
  • Oil analysis
  • Insulation resistance test
  • Dynamic resistance measurement (DRM)
  • Check contactor for switching time control (if equipped
  • Position measurement on the OLTC drive axis (for rotor-type OLTCs with accessible drive axis)
  • Motor power measurement on the OLTC drive mechanism
  • Transformer turn ratio measurement
  • DC winding resistance measurement
  • Magnetic current measurements
  • SF6 gas analysis
  • PD on-line detection (if equipped with PD sensors)

Condition assessment of power transformers

Onsite hv solutions dedicated advanced tools

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