HV Authorised operator S1

HRD high voltage


Quick Course Info


You need to have:

  • communication skills to convey complex information and be able to read and write to Level 3 standard
  • a valid first aid certificate
  • Safely access the rail corridor
  • a current Category 3 medical certificate.


Training and assessment is completed in 40 hours, though additional time may be required for workplace practical assessment.


Recognition of Prior Learning is available, but under strict conditions/evidence requirements, including demonstration of skills and knowledge.


Assessment is by:

  • written assignment
  • written theory test (with a 90% pass mark)
  • practical demonstration of skills (minimum of 2 occasions).


Upon successful demonstration of competence candidates are awarded the unit of competency UEPOPS349B Operate local HV switchgear.

The course satisfies MetroTrains Melbourne network asset management HV requirements.


Because learners must already be employed in a rail signalling role, it's expected that your employer will meet all course costs.

Subsidised training is not available.

High Voltage Authorised Officer S1

The High Voltage Authorised Operator S1 training course is for personnel who are responsible for high voltage switching and testing on the Melbourne suburban rail network.

An S1 operator is also certified for AOS2, AOS3 and Competent Person roles. Refresher training is required every 3 years.

Course outcomes

The course provides participants with knowledge of the railway signalling high voltage systems and procedures to:

  • prepare to test new and/or in-service HV cables and apparatus
  • test the operation of HV test equipment
  • issue a 'Testing Permit'
  • issue an 'Apparatus Switching Certificate'
  • receive a 'Statement of condition of apparatus' from other electrical supply providers
  • conduct a insulation resistance, continuity and phasing test on new and existing HV cables
  • conduct a withstand test on new HV cables.


To attend the HV Authorised Operator S1 training a person must:

  • be Level 3 reading, writing and numeracy skills (refer to UEP12 training package)
  • provide verified or demonstrated recent AOS2 experience and/or hold a current HV AOS2 certification
  • have a valid first aid certificate (currently HLTAID003 Provide first aid) and TLIF2080A/B/or C Safely access the rail corridor and a current Category 3 medical certificate.

Accreditation as a HV AOS1 carries significant responsibility for the integrity of the rail HV network and for the safety of yourself and others involved in HV testing.

It’s important, therefore, that you are able to comply with Victorian Traction Industry Electrical Safety Rules and that you have the ability to communicate clearly with the MTM Electrol operator.


Participants in HV S1 Authorised Operator training complete:

  • written knowledge tests covering HV Electrical Safety Rules and HV testing practices; a 90% pass mark applies to written assessments
  • 5 x workplace practical assessments (WPAs) testing new and/or in-service HV cables, busbars and transformers.


It’s expected that participants will successfully complete this course, including WPAs, in 40 hours. Those undertaking reaccreditation training may complete training and assessment in less than 40 hours.