Organizing the List: A Five-Step Standard
Organizing the bill of materials (BOM/configuration list) for complete electrical assemblies follows a five-step standard: circuit-based categorization, component details, parameter specification, quantity verification, and comprehensive remarks. Industry experts note that the process should adhere to specific standards: categorizing by circuit (incoming/feeder/compensation), detailing components (brand/model), specifying parameters (current/specifications), verifying quantities (against drawings), and including remarks (standards/requirements).
This organized list (component list plus technical attachments) serves as the basis for procurement and acceptance.
Five-Step Standard
- Circuit-based categorization: Incoming line/feeder/reactive power compensation (categorized by circuit) for a clear structure;
- Component details: Circuit breakers/contactors/transformers, etc. (brand/model) with complete details;
- Parameter specification: Rated current/specifications/quantity (parameters specified) to provide a basis for selection;
- Quantity verification: Cross-checking list quantities against drawings (system diagrams/configuration diagrams) to prevent omissions;
- Comprehensive remarks: Standards (GB/T/IEC)/certifications/special requirements (remarks) to serve as the basis for acceptance.
Key Points for Organization
First, cross-reference with drawings.
Compile the list against system diagrams (circuits/components) to prevent omissions.
Second, specify brands.
Clearly indicate component brands/models (authentic products) to prevent downgrading of specifications.
Third, verify quantities.
Check quantities item by item (against drawings) to prevent shortages.
Fourth, manage versions.
Track list versions (revision history) to prevent the use of incorrect versions.
Pitfall Warnings
First, “omitted circuits”: circuits may be left off the list (missing feeders);
always cross-check against the drawings.
Second, “vague branding”: brands may go unspecified (creating room for downgrading components);
ensure brands are clearly listed.
Third, “quantity errors or omissions”: incorrect quantities lead to procurement shortages;
verify each item individually.
Trends and Reminders
Lists are moving toward “digitalization”: integrating BOM systems (electronic lists) with digital drawings (CAD/PDM) boosts efficiency.
For purchasers, the recommended approach involves “standardizing the five-step process, cross-referencing drawings, and managing version control.”
A well-organized list ensures smooth procurement and acceptance.
