8VM1
Gas-insulated switchgear 8VM1 Blue GIS, up to 72.5 kV, 31.5 kA, clean-air insulation with vacuum interrupter for wind turbine applications
8VM1
- Zero F-gases: clean-air insulation (80% N2 / 20% O2), 0 kg SF6, GWP 0 — no gas-handling training and no SF6 purchasing, handling or recycling costs
- Compact GIS designed for on- and offshore wind turbine installations — completely factory assembled, tested and shipped in a single transport unit (up to 2,935 x 2,430 x 1,230 mm, up to 2.6 t, configuration-dependent)
- Proven, maintenance-free vacuum interrupter technology; first major inspection after more than 25 years, expected lifetime beyond 50 years
- Internal arc classification IAC A FLR 31.5 kA, 1 s (acc. IEC 62271-200) for HV cable compartments
- Field-proven at scale: 2,000th SF6-free 8VM1 delivered to a major North Sea offshore wind project; 160 bays delivered to the Netherlands' largest offshore wind farm
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8VM1 covers up to 72.5 kV of the gas-insulated switchgear range (≤ 550 kV across the category, √ scale).
Specifications
Main
| Product family | 8VM1 Blue GIS (Siemens Energy Blue portfolio, GIS 8V three-phase encapsulated) |
| Type | Compact gas-insulated switchgear for on- and offshore wind turbine installations, modular component platform |
| Rated voltage | up to 72.5 kV |
| Insulation medium | Clean air (80% N2 / 20% O2, cleaned and free of humidity), 0 kg SF6 / F-gases, GWP 0 |
| Interrupter technology | Vacuum |
| Delivery concept | Completely factory assembled, tested and shipped in a single transport unit |
| First major inspection | > 25 years |
| Expected lifetime | > 50 years |
Electrical
| Rated frequency | 50 / 60 Hz |
| Rated short-duration power-frequency withstand voltage (1 min) | up to 140 kV |
| Rated lightning impulse withstand voltage (1.2/50 µs) | up to 325 kV |
| Rated continuous current | up to 1,250 A |
| Rated short-circuit breaking current | up to 31.5 kA |
| Rated peak withstand current | up to 85 kA |
| Rated short-time withstand current (up to 1 s) | up to 31.5 kA |
| Rated operating sequence | O-0.3 s-CO-3 min-CO |
Mechanical / environment
| Circuit-breaker drive mechanism | Stored-energy spring |
| Rated filling pressure | 0.56 MPa (abs.) |
| Leakage rate per year and gas compartment (type-tested) | < 0.1 % |
| GIS width (configuration-dependent) | up to 2,935 mm |
| GIS height x depth | 2,430 mm x up to 1,230 mm |
| GIS weight (configuration-dependent) | up to 2.6 t |
| Ambient temperature range | -30 °C up to +45 °C |
| Installation | Indoor |
Standards & certifications
| Ratings and type tests | IEC / IEEE (per manufacturer technical data; individual standards not itemized in source) |
| Internal arc classification of HV cable compartments | IAC A FLR 31.5 kA, 1 s (acc. IEC 62271-200) |
Documents & downloads
Brochure 8VM1 Blue GIS up to 72.5 kV — product flyer 2021 (technical data, wind turbine switchgear configurations)
Presentation 8VM1 Blue GIS 72.5 kV — product presentation
Also covered in the technical library
Catalog Gas-insulated switchgear from 72.5 kV up to 550 kV — Siemens Energy GIS brochure
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