Spare Parts: Procurement Based on Lists
How should spare parts for switchgear be purchased? Procurement should follow a structured list: the list of parts supplied with the unit (included spares) → the list of common spares (component level) → on-demand replenishment (wear-and-tear parts + critical components). Industry experts advise procuring parts based on operational and maintenance needs: stock common items (circuit breakers, contactors, fuses, indicator lights) based on the number of units;
stock extra quantities of wear-and-tear parts (contacts, seals); and maintain inventory for critical components (protection devices).
Purchase parts from manufacturers or authorized channels to ensure authenticity and parameter compatibility, thereby avoiding counterfeit goods.
Spare Parts List
- Included spares: Parts supplied with the switchgear unit (fuses, indicator lights, fasteners);
confirmed via contract; - Common spares: Circuit breakers, contactors, terminals, relays (stock 10%–20% based on the number of circuits);
- Wear-and-tear parts: Contacts, sealing rings, small operating mechanism components (stock in higher quantities due to high wear rates);
- Critical components: Protection devices (microcomputer-based protection), intelligent modules (stock inventory due to the significant impact of failure);
- Consumables: Insulation components, lubricants, labeling materials (stock based on maintenance cycles).
Purchasing Key Points
First, purchase according to the list.
Procure based on the specific switchgear model’s spare parts list, ensuring model parameters (manufacturer and specifications) match.
Second, use manufacturer channels.
Purchase parts from the manufacturer or authorized distributors to guarantee authenticity and parameter compatibility, preventing the use of counterfeits.
Third, seek bulk discounts.
Negotiate discounts for complete sets (included + common + wear-and-tear parts), as purchasing individual items is more expensive.
Fourth is inventory management: maintain a spare parts log and conduct regular inspections to prevent failure due to aging.
Pitfalls to Avoid
First: “Counterfeit parts.”
Parts from unauthorized channels may have mismatched specifications and pose a risk of failure;
always use official channels.
Second: “Model mismatch.”
Spare part models that do not match the equipment inside the cabinet cannot be installed;
verify against the parts list.
Third: “Part aging.” Stocked parts can degrade during long-term storage;
inspect and replace them regularly.
Trends and Recommendations
Spare parts management is moving toward digitalization: cloud-based warehousing (manufacturer online stores) enables rapid ordering, while smart inventory systems (IoT monitoring) facilitate automatic replenishment.
Users are advised to purchase based on the parts list, use manufacturer channels, and maintain proper inventory records.
Keep adequate stock to ensure worry-free operation without downtime.
