Load flow, fault level, protection coordination and arc flash studies by Registered Professional Engineers, with settings and reports your electricians can act on.

Studies we deliver

• Load flow and voltage drop: network model, cable and transformer loading, voltage drop compliance to AS/NZS 3000

• Fault level: prospective fault currents at each board, equipment ratings checked

• Protection coordination: time-current curves, recommended device settings, discrimination review

• Arc flash hazard: incident energy at each board, PPE categories, labels and procedure inputs

• Earthing and fault-loop impedance: disconnection time compliance and earthing review

• Power factor and maximum demand: correction assessment and supply capacity checks

Built for operating sites

Most of our studies are done on live, operating sites: leisure attractions, hospitals, industrial plants and commercial buildings. We model the existing installation in PowerCAD, verify it against site information, and design upgrades in stages so the site keeps running.

Typical deliverables

• PowerCAD model and change log, handed over for future updates

• Single line diagrams with circuit breaker settings and cable reference tables

• Study report with a statement of compliance, signed by an RPEQ

• Arc flash labels and input to your arc flash procedure

Recent studies

• Protection study for a ride main switchboard at a south-east Queensland major leisure facility, with time-current curves and device settings

• Arc flash, protection and load flow modelling for a ride switchboard replacement at a south-east Queensland major leisure facility

• Arc flash procedure for a metropolitan hospital and health service

• Fault level and submain verification for switchboard modifications at a south-east Queensland major leisure facility

FAQ

How often should an arc flash study be updated? Whenever the installation changes significantly, such as a new switchboard, supply change or protection change, and as a rule at least every five years.

Can you work from our existing drawings? Yes. We verify them against site information and flag any gaps before modelling.

Do you supply the model? Yes. You receive the PowerCAD model so future changes can be checked quickly.

Power system studies for sites that can't stop