HV Commissioner

Category: Construction / Engineering
Job Type: Full Time

Posted on:
Last Updated:

Location:  Ireland

We are currently recruiting a HV Commissioner (from junior up to senior level) on a full-time permanent basis.

Overall Role Objective

High Voltage Installation supervisor and Commissioner is responsible for supervision of HV installation specialist team and verification/testing of all aspects of High Voltage substations and cable systems.

Key Responsibilities/Duties

  • Completion of all safety requirements including compiling Risk Assessments and Method Statements and on site risk assessments.
  • Coordinate, plan, and deliver HV installation and commissioning projects
  • Supervision and guidance of HV specialist installation team.
  • Completion of Primary tests on Instrument transformers, Power Transformers and HV switchgear.
  • In-depth knowledge of testing of HV apparatus using Omicron test kits such as Omicron CPC100, Omicron CT analyser etc
  • Functional verification of protection schemes.
  • Commissioning and functional verification of DC Battery systems including battery discharge testing
  • Testing of protection relays using Omicron test equipment and Test Universe Software.
  • Configuration of IEDs across a range of vendors such as Siemens, Schneider and ABB.
  • Operational switching of HV apparatus.
  • Pre-commissioning of ESB Substations.
  • Attendance at FATs for HV switchgear, transformers and protection cabinets.
  • Early engagement with project team to optimise design and minimise installation defects.
  • Assist bid team with technical aspects of tendering.
  • Technical evaluation of HV apparatus at submittal stage.
  • Technical report writing
  • Guide and mentor junior staff in their technical development

Qualifications / Skills

  • Time served electrician or Electrical Technicial/ Engineer
  • Safe pass
  • Full clean driving licence
  • Familiarity with some or all aspects of HV substations from 10kV to 220kV
  • Have in depth knowledge of HV and MV switchgear across multiple vendor platforms
  • Computer literate – Microsoft packages etc


  • Familiarity with ESBN “ Conditions governing connections to the Distribution System”
  • Familiarity with ESBN Pre-commissioning standards
  • Comfortable with Omicron Primary test equipment used for testing instrument transformers and power transformers
  • Familiar with protection relay test techniques and Omicron Test Universe
  • Experienced with relay configuration tools such as Siemens Digsi, ABB PCM, Schneider Agile,
  • SAP with proven HV switching experience
  • GWO trained
  • HV cable testing including VLF testing
  • SF6 gas handling and testing

Benefits:  Competitive salary, 21 days annual leave; Employee Pension Option; Employee Assistance Programme; Medical Checks; Compassionate Leave; Bike-to-Work Scheme; Free Parking.

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