Brochure · EN — Service brochure describing the Global Parts Service for Siemens Energy high-voltage AIS disconnectors: a parts management concept that classifies spares into Parts on Stock (strategic and operational spares, proactive) and Parts on Demand (preventive and corrective maintenance parts, reactive), backed by a worldwide logistics network, a 24/7 Customer Support Center, and spares consulting services (Smart Spares Consulting, SparesVentory). Applies across disconnector designs such as centre break, double side break, and pantograph types (3DN..).
Operational availability of high-voltage switchgear underpins a reliable electricity supply, and customer revenue streams depend directly on uninterrupted energy delivery. Outage time from unexpected failures must be minimized to limit both outage costs and reputational damage.
The Global Parts Service secures the supply of service parts for Siemens Energy AIS disconnectors throughout their asset lifetime. It covers parts for planned maintenance (preventive maintenance parts) and for unplanned maintenance (corrective maintenance parts), as well as safety stock of operational and strategic spares.
Available spare types range from major functional components (e.g. contact systems, operating mechanisms, insulators) down to single units or parts (e.g. contact fingers, terminal connectors, flexibles). All spares are supplied in high quality with Siemens Energy material warranty, and certified service experts support maintenance and repair work.
The parts management concept is a guideline for classifying, describing, and handling the parts relevant during the service life of switchgear. Customers benefit most when all part categories are used together.
Parts on Stock (proactive approach): carefully selected operational and strategic spare parts are kept in stock as a precaution against anticipated, unplanned service events. They enable an immediate response to a malfunction or failure and are essential for customers who want to keep downtime to a minimum.
Parts on Demand (reactive approach): parts procured after a concrete trigger indicates the need for them — either a planned maintenance using preventive maintenance parts (e.g. after the disconnector reaches a defined operating time interval), or an unexpected faulty condition requiring corrective maintenance parts for repair.
| Category | Approach | Purpose | Typical scope | Descriptive structure |
|---|---|---|---|---|
| Strategic Spares | Parts on Stock (proactive) | To fix major failures (acc. IEC 62271-1) | Complete spare modules (quick swap, plug & play solution); major spare components e.g. complete drives; prepared for long-term storage | Complete Modules; Major Components |
| Operational Spares | Parts on Stock (proactive) | To fix minor failures (acc. IEC 62271-1) | Small spare units or parts e.g. density monitors, o-rings, trip coils, contactors, valves; shelf life of parts to be observed | Units / Parts; Parts Sets |
| Preventive Maintenance Parts | Parts on Demand (reactive) | To conduct planned maintenance measures e.g. M1, M2, M3 time-based maintenances | Maintenance kits incl. e.g. rupture disks, o-rings, filter bags, consumption materials | Maintenance Kits; Consumption Materials |
| Corrective Maintenance Parts | Parts on Demand (reactive) | To conduct unplanned maintenance measures e.g. after a malfunction/failure | For immediate or pending repairs; parts not intended for long-term storage | Modules / Major Components; Units / Parts |
Strategic spares are stocked as a precaution and used to fix major failures (per the IEC 62271-1 definition) that cause a prolonged power-service interruption of the whole switchgear bay. They are primarily major functional components that allow a quick swap of the faulty component to restore operational readiness as fast as possible.
Operational spares are stocked to fix minor failures (per the IEC 62271-1 definition) and are typically used for non-critical failure repairs, mostly as single spare units or parts sets.
Preventive maintenance parts, including consumption material, are used during planned service measures according to OEM recommendations; their procurement is typically coordinated together with the planned service measure.
Corrective maintenance parts are used for unplanned service measures such as imminent or pending repairs after an unexpected malfunction or failure; the required parts are defined and procured in the direct context of the service measure.
To protect customers against the operational and financial risks of potential switchgear malfunctions or failures, the Global Parts Service provides the right parts quickly, wherever needed: reliable availability of spare parts for Siemens Energy AIS over the asset lifetime, worldwide supply through a global logistics network, and short response times to enquiries via the 24/7 Customer Support Center.
Individual spares solutions are supported by two consulting services: Smart Spares Consulting delivers a tailored, cost-, risk-, and utilization-optimized recommendation of new strategic spares, while SparesVentory maximizes the value of spares already in stock through operational readiness checks, interchangeability checks, and value preservation recommendations.
The Global Parts Service combines with other asset services — maintenance, repair and retrofit, emergency services, and modernization and upgrades — to secure reliable operation of customer switchgear.
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