Recent additions to the Library — new calculators, the typeset audit report, and single-line diagrams. Newest first.
The library grows by the instrument three shipped calculators already had holes cut for. One calculator added, the register renumbered to true catalogue order ahead of it, and the whole launch counted by derived gates rather than by hand.
AMPACITIES · V1.1An IEC 60909-0 short-circuit study down a radial chain: three-phase, line-to-line and line-to-earth duty, maximum and minimum on every document, peak and thermal-equivalent currents, per-node equipment adequacy against declared ratings — and a standards-inputs declaration in place of embedded constants, so every voltage factor and temperature the method takes is the engineer’s own, cited to its clause. Verified by an independent second implementation at 1e-9 across two hundred networks, and by the practice’s own transformer engine.
IEC 60909-0:2016The platform is declared. Eleven calculators with server-verified issue, the typeset audit report, single-line diagrams with a real document lifecycle, the master register, proposals through invoices — live, reproducible from a single line of trunk, and counted by our own cookieless page-view counter behind a privacy page that says exactly what it does. The library keeps growing from here; this is the line where growing stopped being building.
AMPACITIES · V1.0 · GAA two-winding distribution and power transformer, defined once and read six ways: full-load current, fault contribution and earth fault, voltage regulation, losses and efficiency with GEMS MEPS checking, off-circuit taps, and a C57.109 / C57.12.59 through-fault damage curve that drops onto the coordination chart. Shipped with a worked example and a note on the 433 / 415 / 400 V question.
IEEE C57 · AS 60076 · GEMS · IEC 60909Static UPS sizing straight from a load schedule — apparent and real power, rectifier and inverter rating, and battery autonomy against a runtime target, with the assumptions each figure rests on disclosed in the report.
IEEE 1100 · load-schedule methodA single-line diagram viewer opened to the public at /sld/, alongside a full editor inside the platform with server-side persistence — draw the network the calculators size, and keep it under a document number.
platform · draft revisionsEvery calculator's PDF was rebuilt as a single-typeface, black-and-white Cahier sheet — one monospace family throughout, a server-verified stamp, and a document-control band — so an exported result reads as a record, not a screenshot.
print-truth · single typefaceTime-current grading against a vendor device library: plot relays, breakers and fuses on one chart, read each device's trip time at any fault current, and check the grading margin across the whole fault range rather than at a single point.
IEC 60255 · IEEE C37.112Detuned capacitor-bank correction for medium-voltage networks — required kVAr to a target power factor, detuning reactor selection, and the resonance check that keeps the bank clear of the dominant harmonic.
AS 4122 · IEC 61642The cable-sizing engine was rebuilt table-true to AS/NZS 3008.1.1:2017 — current-capacity, voltage-drop and short-circuit selection read straight from the standard's tables, with the earth-fault-loop check to AS/NZS 3000, and every table reference cited on the result.
AS/NZS 3008.1.1 · AS/NZS 3000Dates are when each addition went live on the Library. Earlier calculators — voltage drop, maximum demand, motor starting, earthing grid — predate this log. More in preparation.