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Parametric Switchgear Design Generation with Automated BOM

Accelerating Engineering-to-Production Cycles via Rule-Based Model Generation and Scriptable CAD Engine

Overview of transforming engineered-to-order low-tension switchgear and control panel workflows into an automated, single-run design studio. 

Challenges

  • Repetitive Engineering Overhead: Custom panel designs are variants of existing templates, yet engineers spent hours manually drafting General Arrangements (GAs) and Single-Line Diagrams (SLDs). 
  • BOM Discrepancies: Bills of Materials compiled separately from CAD drawings resulted in human errors where components drawn on the GA were missing from the BOM.
  • Inconsistent Standards: Design rules (busbar sizing, clearances, layout constraints) depended on individual engineer habits rather than standardized system logic. 

The Solution

A parametric design engine powered by a scriptable CAD execution layer that generates full drawing sets and BOMs simultaneously from a single spreadsheet order input. 

  • Single-Run Artifact Generation: Converts sales indent data directly into General Arrangement drawings, Single-Line Diagrams, title blocks, and BOMs in one pass.
  • Unified Product Model: Ensures CAD drawings and BOMs are simultaneous representations of a single digital model, making structural mismatches impossible.
  • Encoded Engineering Rules: Standardizes busbar selection, compartment layout, component placement, and safety clearances directly into executable code.
  • Scriptable CAD Engine: Uses programmatic geometry generation so design updates automatically regenerate all affected CAD drawings.

Business Outcomes & Impact

  • Drastic Reduction in Turnaround Time: Reduces elapsed time from order indent to customer approval drawing from days to minutes.
  • Flawless BOM Accuracy: Eliminates manufacturing downtime caused by assembly-stage component mismatches.
  • Reusable Design Asset: Scalable approach easily extended into broader design studios (e.g., battery management control panels and associated PPAP packs).
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