Transformer Grid Lab — The Complete Grid Journey
Follow electrical power from 21 kV generation, through 400 kV EHV transmission, interconnecting autotransformers, 132/33 kV substations with OLTC regulation, down to local distribution and consumer loads. Real-time engineering current calculations, load loss physics, and fault simulations.
→Design Engineer Track — the structured pathway
Four levels, ~400 guided hours and five capstones, now aligned to the book volumes. Level 1 is free. Use this hub’s 3D models and calculator as you work the track — the design course is the reading, the track is the practice, the books are the reference.
→TX Calculation — Interactive Design Suite
The calculation half of the design course: a live IEC 60076 sizing engine in three modes — distribution, power and cast-resin. Change rating, voltage, flux density or current density and watch volts-per-turn, core area, turns, currents and conductor sizes resolve in real time, then capitalise the losses against the A&B factors.
→Power Transformer 3D
A 100 MVA, 132/33 kV unit you can orbit, explode and slice open. Take the cinematic guided tour, hit ⚡ Energize to hear it hum and watch flux circulate, or run the 🚨 fault simulator and see the Buchholz catch what relays can't.
→Transformer Lab — Interactive Disassembly
Take a 100 MVA power transformer apart layer by layer. 16-stage engineering disassembly sequence, continuous explode scrub, active-part crane lift, dielectric barrier isolation, magnetic flux path, and deep links to manufacturer sourcing and calculation tools.
→Distribution & Dry-Type 3D
Three constructions side by side — oil-immersed with corrugated fin walls, cast resin, and open-wound VPI. Every part clickable with its engineering role, exploded-view assembly, and a 🎯 quiz mode that scores how well you know the anatomy.
→Core & Coil Assembly 3D
The naked active part: windings, clamps, press screws, leads and cleats out of the tank — plus a core-building mode where you stack the step-lap top yoke yourself, layer by layer, onto wooden clamps with proper insulation.
→500 MVA Power Transformer 3D
A 400/220 kV YNyn0+d unit — star HV, star LV and a buried stabilising tertiary — with a 5-limb core, separate ODAF cooler banks, 400 kV condenser bushings and tank magnetic shunts. Explode it, cut the windings, energize and watch the directed-oil cooling loop.
→Core Topology Explorer
Switch between 3-limb, 5-limb and shell-form cores and watch the magnetic flux find its return path — the clearest way to see why large and transport-limited units go 5-limb or shell-form.
→On-Load Tap-Changer Cutaway
The diverter, tap selector and change-over selector laid open. Press “Raise” to watch a tap operation — the selector pre-selects off-load, then the diverter snaps through the transition resistor (or vacuum bottle).
→Condenser Bushing Cutaway
Section a 400 kV bushing to reveal the concentric capacitor grading foils, test tap, central conductor and bushing CT. Toggle RIP vs OIP and overlay the voltage-grading field.
→Winding Types Explorer
Helical, layer, disc and interleaved windings side by side — with the static ring, and an ⚡ surge mode that shows how interleaving flattens the line-end impulse stress.
→Autotransformer 3D
A 400/220 kV interconnecting auto — see the series + common winding share one circuit, the delta tertiary, and the animated current path from HV through the junction (IV) to neutral.
→Generator Step-Up (GSU) 3D
A 420/21 kV GSU — delta LV to the generator (phase-isolated bus), star HV to the line with earthed neutral, YNd1, and the current path from machine to switchyard.
→Country-Based Designer
Pick any of 196 countries and a rating: the design engine re-runs the course's §9 loop with local frequency, voltages, climate derating and loss regulations — watch a Saudi 60 Hz core shrink and a German Tier-2 design fight its loss caps.