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Milan to Power Fleet of 1200 eBuses Not Only with Clean Energy, But Also with Green Power Infrastructure

SF6-free MV R&D project is co-funded by EU’s LIFE program

The innovative SM AirSeT™ MV switchgear, free of greenhouse gases, are deployed in Milan depots’ charging infrastructure for its bus fleet, to be 100% electric by 2030. Digital and connected solutions allow smart and efficient energy management and ensure greater continuity of service.

Schneider Electric’s innovative and sustainable technologies are at the heart of the renewed medium-voltage electrical distribution system, delivered by Alstom for Milan’s Azienda Transporti Milanesi bus depots in Viale Sarca and Giambellino.
Schneider Electric’s new SM AirSeT medium-voltage switchgear uses air insulation and shunt vacuum interruption technology instead of the greenhouse gas SF6. It also has advanced digital capabilities and connectivity for improved safety, security, efficiency, modern asset management, and network optimization.

From ambition to action
In pursuit of its ambitious sustainability goals Azienda Transporti Milanesi is committed to using electrical distribution panels without greenhouse gases. This is one of the first projects in which SM AirSeT has been used in the infrastructure sector. The switchgear are at the center of Azienda Transporti Milanesi’s new electrical distribution system and will support their goal of an all-electric bus fleet. The transport company plans to convert their entire fleet of 1,200 diesel-run buses to fully electric vehicles by 2030. Schneider Electric’s innovative, environmentally-friendly SM AirSeT switchgear will support the necessary e-bus charging infrastructure.
Using panels with this technology avoids 560 tons of greenhouse gas emissions, according to Azienda Transporti Milanesi. In addition to improving sustainability, SM AirSeT also increases operational and maintenance efficiency by using Schneider Electric solutions for connectivity, communication, automation, and supervision.
 "Thanks to our capacity for innovation, we can satisfy the most stringent end-to-end sustainability requirements without any compromise in terms of performance, efficiency, and operational optimization,”
said Fabio Chiesa, Head of Transportation Infrastructure at Schneider Electric.

Why SM AirSeT with pure air technology?
Until recently, SF6 switchgear technology was the best and only way for switchgear to meet installations’ compact size and insulation requirements. The downside of SF6 is its high global warming potential (GWP) and the need for it to be carefully handled when equipment is retired. Now, however, there is an alternative SF6-free technology called SM AirSeT to reduce environmental impact and eliminate costly gas treatment at the equipment’s end of life.
SM AirSeT uses only pure air insulation combined with a new Shunt Vacuum Interruption (SVI)TM technology created by Schneider Electric. It is compact – the same size as a traditional SM6 switchgear panel. It also features advanced digital functions that can be integrated into automation and supervision systems. In addition, it supports condition-based maintenance processes that maximize service continuity and use thermal monitoring technology to identify temperature anomalies that can lead to overheating.
SM AirSeT has received Schneider Electric’s Green Premium™ label for sustainable performance. This is reserved for Schneider Electric solutions that are designed for circular performance with features such as improved durability, upgradability, and recyclability. They also comply with environmental regulations, provide instructions for end-of-life handling, and include environmental disclosures such as the Product Environmental Profile (PEP).
SM AirSeT also retains the same operating methods as traditional switchgear, so it is easy to use and requires no additional operator training. In addition, it uses arc flash mitigation technologies that increase operator safety and it supports new modes of interaction – such as interfaces that use augmented reality for virtual switchgear access.
So far Schneider Electric has supplied Alstom, the contractor in charge of execution, with 32 SM AirSeT switchgear units for this ongoing modernization project, which are complemented with switchgear and energy management systems (EcoStruxure™), as well as maintenance and support by dedicated teams.

Discover 5 reasons to transition to pure air MV technology

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