Substation Studio — 3D Switchyard Construction Planner

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Bays

Yard & bay

Whole-of-yard

Busbar arrangement

Technology

Ground / site conditions

Yard context (new or brownfield)

Project type

Existing bays

Outage window h

Tie-in bay / interface

Existing-yard notes

Selected bay

Bay name

Bay type

Scope status

Voltage

Free issue (principal supplies?)

Tick what the principal supplies free-issue. The power transformer dominates cost and usually IS free-issue — its install (place/oil/bund/heavy-lift/SAT) is always contractor.

Transformer Switchgear (CB/disc) CT / VT P&C panels

Project & sign-off (for the report)

Project / substation

Principal

Location

Prepared by

Reviewed / approved (RPEQ)

Substation takeoff

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Whole of yard

Shared site scope once per yard

Indicative cost —

Market all-in benchmark ($/bay × technology + transformers + shared, AACE Class 5 −30/+50%, AUD ex-GST 2025) vs bottom-up construction-direct build-up (contractor vs principal free-issue). INDICATIVE — not a tendered price; finals in Tx1.

Constructability advisory

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Per-bay

⚠ Indicative planning takeoff only. Busbar arrangement sets CB-per-bay; shared scope is counted once; the power transformer (usually principal free-issue) dominates. Replace with the principal's SLD, equipment schedule, earthing study & free-issue schedule before tender (AS 2067). Detailed P&C / relay schemes / SCADA excluded.

Single line

Legend · 3D key

Circuit breaker Disconnector / steel CT · VT · arrester Transformer Capacitor bank Shunt reactor Busbar / conductor Electric fence Active / new bay Existing Remove Temporary

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