In the high-stakes world of electrical infrastructure, reliability, protection, and precision are non-negotiable.
At Nettlefold Projects, our engineering approach doesn’t just meet minimum compliance — we go beyond, ensuring every design is future-ready, fault-resilient, and aligned with Australian Standards (AS/NZS 3000, AS 2067, AS 7000, and AS/NZS 2081).
One of the most critical tools we apply in HV, MV, and LV networks is load flow and fault current analysis — the backbone of electrical safety, efficiency, and system coordination.
Why Load Flow and Fault Currents Matter
Load flow studies determine how power moves through the system under normal conditions — voltage drops, feeder performance, and equipment capacity.
Prospective fault current calculations, on the other hand, simulate what happens when things go wrong — like short circuits or earth faults. This helps us:
- Size equipment like circuit breakers and fuses
- Select proper earthing methods and busbar ratings
- Validate protection settings and backup schemes
- Design safe clearance zones and switchboard panels
Whether it’s a 33kV substation, a LV motor control centre, or a distributed solar network, knowing the exact fault levels and coordinating the protection is essential for safety and uptime.
The Right Protection, Every Time
Too often, mismatched or underperforming protection schemes lead to:
- Unnecessary outages
- Delayed fault clearing
- Equipment damage or non-compliance
At Nettlefold Projects, we model time-current curves (TCCs), grade protection schemes across all voltage levels, and simulate cascading failures — all before a single cable is laid.
We ensure:
- Selective coordination across HV, MV, and LV
- Compliance with utility requirements (e.g. Endeavour Energy, Ausgrid)
- Safe integration with generators, UPS, BESS, or renewables
- Complete AS/NZS 3000:2018 and AS 2067 design validation
Tools + Process
Our engineers use tools like ETAP, PowerFactory, and SKM PTW to run:
- Load flow and power factor correction
- Arc flash studies
- Earth grid and step/touch potential assessments
- Switchgear and relay coordination
- Remote I/O and SCADA interface mapping
Why Clients Choose Nettlefold
🔹 Fully compliant designs for commissioning and long-term operation
🔹 Transparent documentation for client-side approval or audit
🔹 Cross-discipline expertise: electrical, civil, mechanical, controls
🔹 Designs that align with real-world site conditions and changeover logic
🔹 Support from concept design to FAT, SAT, and handover
Whether it’s an industrial expansion, a utility substation, or a tiered energy system, Nettlefold Projects delivers certainty in an uncertain environment.
We don’t just design systems — we design safety, efficiency, and peace of mind.
Get in touch to learn more about our HV/MV/LV design capabilities or to request a load flow study:
info@nettlefoldprojects.com.au
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