EDP Interface Plates 🔩📐

interface plates that mount to container end walls and organize all power, comms, and fluid connections

rectangle container_a
rectangle container_b
rectangle plate_a
rectangle plate_b
rectangle flexible_assembly
container_a -r- plate_a: receiver frame (welded)
container_b -l- plate_b: receiver frame (welded)
plate_a -r- flexible_assembly: liquid-tight conduit\nM12 connectors\ncooling QDs
flexible_assembly -r- plate_b

Containers are placed face-to-face. Plates mate as a pair via flexible assemblies — there is no hard-dock interface. Containers tolerate ±25mm horizontal and ±10mm vertical misalignment, absorbed by hose/cable service loops.

External BESS → BG → Grid Container → CG → Compute Container (415Y/240V AC)

Grid container always present. PCS lives in grid container when BESS is DC-coupled; when AC-coupled the BESS lands on grid switchgear directly.

Variant codes follow [Container A][Container B]-[Coupling]-[String/Port Count] where applicable.

See the spec doc for full penetration schedules per variant.

For every plate variant required by a deployment, the implementation outputs:

1. DXF file — 2D fabrication drawing with plate outline, all hole/cutout locations dimensioned from plate center, gasket groove cross-section, mounting hole pattern with thread callouts, ARCNODE title block (part number, variant code, revision, material spec, finish spec).
2. BOM line item — structured JSON referencing the drawing:

   {
    "part_number": "ARC-PLT-BG-DC-001",
    "description": "Interface Plate, BESS-to-Grid DC-Coupled, 4-String",
    "qty": 1,
    "material": "6061-T6 aluminum",
    "finish": "Type II anodize",
    "drawing_ref": "ARC-PLT-BG-DC-001.dxf",
    "type": "custom_fabrication"
   }

3. Penetration schedule — table of every hole/cutout: penetration ID, X/Y center coordinates from plate origin, diameter or ×ばつH, fitting spec, OTS part number.

ARC - PLT - [VARIANT CODE] - [REVISION]
Examples:
 ARC-PLT-BG-AC-001 BESS-Grid, AC-coupled
 ARC-PLT-BG-DC-001 BESS-Grid, DC-coupled (single parametric variant)
 ARC-PLT-CG-001 Compute-Grid
 ARC-PLT-CD-001 Compute-Drycooler
Defense variants append `-D`:
 ARC-PLT-BG-DC-001-D

The fabrication flow is CadQuery-based:

parametric model.py (CadQuery) → STEP → DXF + GD&T drawing → BOM line item + penetration schedule

uv sync
uv run poe build # CadQuery → STEP per variant
uv run poe validate-model # BRep validity + bbox vs spec
uv run poe generate-drawings # DXF + GD&T PDF per variant
uv run poe sim # IP rating verification fixtures