Maximized reliability and minimized operating costs
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Scan the QR code for further information Maximized reliability and minimized operating costs Medium-voltage outdoor systems for all climate conditions

Outdoor vacuum switching devices from Siemens The intelligent solution for tomorrow’s smart grids

Power distribution grids are becoming more and more complex. This is why Siemens focuses on helping customers improve the reliability and efficiency of their distribution grids. This keeps them a step ahead of their challenges, from the control center via the grid to the consumer. Outdoor switching devices are essential components of medium-voltage distribution grids with overhead distribution lines. Siemens’ comprehensive portfolio of outdoor vacuum switching devices has been especially designed for a wide variety of climatic conditions. Thus, type-tested reliability as well as long...

Benefits and features • Maintenance-free switch unit • High breaking capacity • Low contact resistance • Interrupter optimally adapted to your application Vacuum interrupters from Siemens work in a particularly reliable and safe manner. The arc, which results when the switching contacts are opened, can be physically well controlled in the vacuum. As the contact gap is de-energized during the current zero crossing, a self-extinguishing switching principle is created, which minimizes wear on the contacts. This results in a substantially higher electrical switching performance and a...

Portable Switch Disconnect Switch

Benefits and features • Easy transport • Highly reliable and safe operation • Low cost of ownership • High electrical and mechanical endurance • No maintenance of mechanical parts required • Rated voltage 12 to 40.5 kV • Rated normal current 630 to 2,500 A • Rated short-circuit breaking current 20 to 31.5 kA The Live Tank 3AF0 circuit-breaker has been especially conceived for breaking short-circuit currents in substations and in overhead-line systems. Its type-tested, safety-oriented and robust design withstands the most adverse climate conditions and guarantees a long electrical and...

Further information • Very compact design, small footprint • Arc-resistant enclosure (optional) • 10,000 operating cycles • Rated voltage 15.5 to 38 kV • Rated normal current 1,200 to 3,000 A • Rated short-circuit breaking current 20 to 40 kA In dead-tank circuit-breakers, the vacuum interrupter is installed in an earthed metal enclosure with a very compact design and a small footprint. Optionally, the circuit-breaker features an arc-resistant enclosure. It has been especially conceived for the ANSI market and fulfills the same switching duties as the Live Tank 3AF0. It can optionally be...

Benefits and features • Designs for single-phase, triple-single and three-phase applications • Large number of protection, metering and monitoring functions including smart grid automation • Fast fault isolation possible < 300 ms • Rated voltage 12 to 38 kV • Rated normal current 200 to 800 A • Rated short-circuit breaking current 12.5 to 16 kA The development of the Vacuum Recloser 3AD was backed by decades of experience in vacuum switching technology. The Recloser 3AD guarantees safe and efficient operation in the event of faults, avoiding permanent interruptions in distribution lines...

Saving costs with maximum grid availability Benefits and features • Improves reliability and SAIDI/SAIFI (System Average Interruption Duration/ Frequency Index) • Quick and easy installation – plug and play As an intelligent, compact and cost-efficient single-phase circuit-breaker, the Fusesaver 3AD8 is the fastest outdoor vacuum circuit-breaker worldwide. It is mainly used in rural distribution grids and can eliminate the effects of temporary faults in lateral lines, spur lines and T-offs almost completely. It is directly mounted on the overhead line. • Lower operating costs due to reduced...

While traditional in-line tension disconnects offer line crews a temporary isolation of a line at non-designated switching locations, the lack of a ganged switching capability creates operational inefficiencies. These are due to: • Restrictions in load breaking capability • Restrictions in load pickup • The risk of ferro-resonance as an effect of single-phase switching operations • The additional time to isolate upstream devices prior to operating the in-line disconnect. Siemens has addressed all of these problems by adapting the switching unit of the proven Fusesaver circuit-breaker into a...

Especially designed for outdoor installations, switches are ruggedly built, reliable devices that splice right onto the line. As switch-disconnectors they serve to safely support the conductor while providing the required isolating distance for quick and safe line maintenance. By the nature of its application, a line tension switch must mechanically support the line and provide high-voltage electrical isolation when the switch is in open position. To achieve this, the latest porcelain and polymer insulators may be chosen. The switches can be used in medium-voltage substations, in the line...

Added value for our customers and partners – around the world With tailor-made global sales and services Siemens outdoor switching devices – innovative, future-oriented and cost-efficient • Higher network availability and reliability • Reduced outage times and number of affected customers • Lower lifecycle costs compared to standard equipment • Reduced operating costs • Quick amortization of investment costs • Avoidance of penalty payments • Automatic restoration and fault isolation in meshed grids • Flexible all-in-one solutions • Eco-friendliness due to vacuum switching technology...

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