Solution Design: A Six-Step Closed-Loop Process
Designing a complete power equipment solution involves a six-step closed-loop process: requirements analysis → load calculation → solution configuration → equipment selection → drawing design → review and confirmation. Industry experts note that the process follows a specific sequence: first, analyze requirements (electrical loads, circuits, and environment);
next, calculate loads (capacity/current); then, configure the solution (cabinet type, circuits, and protection); select equipment (switches, busbars, and instruments); and finally, produce drawings (system diagrams and layout plans).
Production begins only after the solution is reviewed and confirmed, as the design determines both project quality and cost.
The Six-Step Process
- Step 1: Requirements Analysis – List of electrical equipment (capacity, quantity, and nature), circuit requirements, and environmental conditions (indoor, outdoor, or explosion-proof);
- Step 2: Load Calculation – Use the demand factor method to calculate load and current, and determine transformer or incoming line capacity;
- Step 3: Solution Configuration – Select cabinet type (e.g., GGD, GCK, MNS), define circuits, and configure protection (circuit breakers or fuses);
- Step 4: Equipment Selection – Select components based on parameters, including switches (rated values/short-circuit ratings), busbars (current-carrying capacity), and instruments (metering/monitoring);
- Step 5: Drawing Design – Create primary system diagrams, secondary schematic diagrams, layout drawings, and foundation drawings;
- Step 6: Review and Confirmation – Review the solution (parameters, standards, and costs) and confirm before proceeding to production.
Key Points
First, ensure accurate requirements.
The solution will only be appropriate if the equipment list and operational modes are accurate.
Second, ensure regulatory compliance. Designs must adhere to relevant standards (such as GB 50052), and parameters should include adequate safety margins.
Third, ensure cost control.
Align the solution configuration with requirements (avoiding over-specification) and optimize costs.
The fourth step is review and confirmation: validate the solution (covering both technical and cost aspects) to prevent the need for rework.
Pitfalls to Avoid
First, “unclear requirements”—incomplete equipment lists or insufficient system capacity.
Second, “lack of adherence to standards”—ensure designs comply with regulations to avoid non-compliant specifications.
Third, “over-configuration”—avoid excessive designs that waste costs;
instead, align the solution precisely with requirements.
Trends and Reminders
Solution design is moving toward digitalization, utilizing BIM 3D modeling, intelligent selection software, and simulation to enhance design efficiency.
For users, the recommendation is to thoroughly clarify requirements, conduct rigorous solution reviews, and ensure regulatory compliance.
A well-designed solution ensures a worry-free project.
