16/05/2026
Over the past two months, the team at MSM Energy has successfully completed multiple High Voltage Balance of Plant (HV BoP) maintenance activities across the region, supporting critical renewable and utility infrastructure.
The works included comprehensive inspection, testing and maintenance of:
⚡ 66kV & 33kV Circuit Breakers (CBs)
⚡ 66kV Voltage Transformers (VTs)
⚡ 33kV Joslyn Switches
Key testing activities completed across the assets included:
🔹 Circuit Breaker Testing (66kV & 33kV)
• Contact Resistance Measurement
• Open & Close Timing Testing
• Insulation Resistance Testing
• Functional & Trip Circuit Verification
• Mechanical Operation Checks
• Minimum Pick-Up Voltage Testing for Trip & Close Coils
• CB Spring Charge Motor Run Test
🔹 Voltage Transformer (66kV VT) Testing
• Insulation Resistance Testing
• Winding Resistance Measurement
• Ratio & Polarity Verification
• Secondary Circuit Functional Checks
• Tan Delta & Capacitance Testing
🔹 33kV Joslyn Switch Testing
• Contact Resistance Testing
• Mechanical Operation & Alignment Checks
• Insulation Resistance Testing
• AC Hi-Pot Testing
• Visual Condition Assessment
• Functional Interlocking Verification
All works were completed in accordance with relevant Australian Standards, OEM recommendations and site-specific maintenance strategies to support asset reliability, operational readiness and network safety.
Proud of the MSM Energy team for continuing to deliver safe, reliable and technically robust HV maintenance solutions across Australia.
For any of your HV maintenance needs, please reach out to [email protected]
