Transmission lines switching - Bridging Course

Bridging course for holders of current TL authorisation (66 kV/132 kV) to provide a learning pathway to gain the TS-L authorisation (220 kV/330 kV) – Terminal Substation Transmission Lines Switching, as stipulated in Appendix 4 of the ESSR 2016.

Course duration

3 days

Suitable for

People who hold the current TL authorisation (66 kV/132 kV)

Course includes

  • Demonstrate knowledge of the electrical configuration of Western Power terminal substations.
  • Describe the function of transmission lines switchgear in terminal substations.
  • Identify and describe the components of transmission lines protection schemes.
  • Demonstrate, or simulate on-the-job, the safe switching of switchgear in substations.
  • Demonstrate the safe application and removal of program earths.
  • Demonstrate the use of Western Power policy and procedural tools and documentation for transmission lines switching operations.
  • Plan, prepare and perform transmission lines switching operations within the Western Power TS-L switching authority.
  • Use onsite information to identify and locate faults.


  1. Network Authority Card (NAC)
  2. NA2 Substation Entry authorisation
  3. eNAR authorisation – LEVEL 0
  4. Recipient in Charge NA3T / Recipient in Charge Transmission
  5. Transmission Lines (TL) authorisation
  6. Plus either a:
    • Western Australian Electricians Licence – CERTIFICATE OF REGISTRATION (issued by EnergySafety WA) OR
    • Cert III qualified lineworker

What to wear

PPE Level 1
For more information about Western Power PPE requirements view the Western Power PPE Procedure


Written and practical assessment


Certificate of Completion

Associated Authorisations

TS-L - Terminal Substation Transmission Lines Switching

Note: TS-L is restricted to the operation of:

  • line circuit breakers (0.0)
  • line disconnectors/isolators (0.5)
  • line earth switches (0.7).

For information on how to apply for an Authorisation, contact the Authorisations Team

How to book

If you have any queries or would like to make a booking, please contact PTS via email or phone 9411 7888

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