EV fast-charging station electrical design.
Case study: electrical design for a multi-site EV fast-charging network rollout — including utility supply upgrade, switchboard design, charger reticulation and SCADA monitoring to AS/NZS 3000 and AS/NZS 61851.
Project overview
A national EV charging operator engaged ASTCAD for the electrical design of 8 fast-charging sites across NSW and VIC. Each site comprised 4 × 350 kW DC fast chargers, an HV transformer upgrade, switchboard, lighting design and SCADA monitoring back to a central NOC.
The challenge
Each site had different utility supply capacities and connection arrangements. Several sites required HV transformer upgrades coordinated with local DNSPs. The operator needed a standardised design package that could be value-engineered to suit each site’s specific supply.
Our approach
- Standardised charger and switchboard design package
- Site-specific supply assessment and upgrade design
- DNSP coordination for transformer upgrades
- Lighting design to AS/NZS 1158 for amenity and security
- SCADA architecture for centralised charger monitoring
Deliverables
- Standard design package (applied to 8 sites)
- Site-specific overlays and connection drawings
- DNSP submission documents per site
- Lighting and CCTV layouts
- SCADA architecture and integration package
Outcome
All 8 sites went live within the planned 11-month rollout. The standardised package reduced engineering time per subsequent site by 60%. The operator has retained ASTCAD on a panel agreement for ongoing network expansion.