forked from jappel/leistungsbilanz-ts
49488f4e1b
Per-circuit cross-section recommendation as a separate module attached to the circuit list. It never writes project data itself: "Übernehmen" applies cable type, cross-section and length through the regular circuit.update command, so revisions and Undo/Redo stay intact. - Pure domain module (src/cable-sizing) with IEC 60364-5-52:2009 Annex B tables for PVC and XLPE, copper and aluminium, methods A1, A2, B1, B2, C, D1, D2 and E. Every value was cross-checked against public reproductions; where sources differ the lower value is used (docs/cable-sizing-module.md). - Temperature and grouping between table values round to the safer value; values outside the tables return no result instead of a factor of 1. Ground methods use B.52.18 (D2) and B.52.19 A (D1). - Overload protection: circuit-breakers In <= Iz; gG fuses additionally I2 <= 1.45 Iz with I2 = 1.6/1.9/2.1 In. - Inputs prefilled from the circuit: power, phase (group or device rows), project voltage, power-weighted cos phi, length and protective device. - Opened from a "Leitungsberechnung" button in the row actions, not from a grid cell, so cable cells keep the spreadsheet behavior. - Stateless API under /api/cable-sizing; no database table or migration. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
33 lines
2.2 KiB
Markdown
33 lines
2.2 KiB
Markdown
# Circuit List Editor Known Limitations
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- All currently supported Circuit and CircuitDeviceRow editor writes use
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persistent project commands and project-wide toolbar undo/redo, including
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moves, atomic multi-section reorders and explicit renumbering. Undo/redo
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eligibility is restored from server history after a page reload.
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- The project page exposes the paginated revision timeline; the circuit editor
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itself currently exposes only the next eligible Undo/Redo actions.
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- Named and automatic logical project snapshots can be listed and restored
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through the project page with persistent Undo/Redo. Automatic snapshots are
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created every 25 revisions and only their newest 12 entries are retained.
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- The Revit/CSV foundation and confirmed initial import are implemented.
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Existing-row assignment, move and detach plus creation of an external-only
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row in an existing or newly created circuit have atomic persistent commands.
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Their API planning and editor UI, follow-up import, conflict review and return
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export are pending.
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- Persistence currently targets local SQLite; PostgreSQL is an architectural option, not an implemented runtime.
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- The global device library supports basic CRUD and copy operations, but has no
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versioning, permissions or controlled synchronization model.
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- There is no automatic sizing of all circuits. The optional cable sizing
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module suggests a cross-section for one circuit on demand (IEC 60364-5-52
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Annex B tables; no short-circuit, disconnection-time or selectivity checks,
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no methods F/G, soil resistivity fixed at 2.5 K·m/W) and does not validate
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manually entered cable values. National tables (DIN VDE 0298-4) must be
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checked by the planner; see `docs/cable-sizing-module.md`.
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- Sorting is view-only until users explicitly apply sorted order.
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- Complete-circuit drag supports one circuit at a time between groups of the
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same category. Cross-category moves and multi-circuit moves across group
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boundaries are intentionally rejected; multi-circuit reorder inside one
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group remains supported.
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- Protection and cable values are planner-owned manual selections. The later
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sizing/warning engine does not yet validate them against load, length or
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voltage-drop rules.
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