F35-170 kV
Gas-Insulated Substations up to 170 kV
Our F35 GIS is a field-proven solution offering high availability and reliability for networks up to 170 kV. It is ideally suited for a wide range of applications, including power generation, transmission, distribution, commercial, and heavy industrial sectors. The F35-170 kV GIS uses SF₆ gas as both switching and insulating medium.
The F35-170 kV GIS will soon transition to a SF₆-free version, with the integration of our g³ gas technology planned in 2026. This evolution supports a more decarbonized grid while maintaining the same high level of performance and reliability.
The F35 is a compact and accessible GIS solution, with a bay footprint below the market average. Up to 3 bays are assembled, wired, tested and shipped enabling shorter site works.
In addition, the F35 features an advanced SF₆ sealing system. Full digital monitoring control and protection capabilities, and an optimized user interface enable the F35 to be readily integrated into the smart grid.
F35-170 kV
Gas-Insulated Substations up to 170 kV
Our F35 GIS is a field-proven solution offering high availability and reliability for networks up to 170 kV. It is ideally suited for a wide range of applications, including power generation, transmission, distribution, commercial, and heavy industrial sectors. The F35-170 kV GIS uses SF₆ gas as both switching and insulating medium.
The F35-170 kV GIS will soon transition to a SF₆-free version, with the integration of our g³ gas technology planned in 2026. This evolution supports a more decarbonized grid while maintaining the same high level of performance and reliability.
The F35 is a compact and accessible GIS solution, with a bay footprint below the market average. Up to 3 bays are assembled, wired, tested and shipped enabling shorter site works.
In addition, the F35 features an advanced SF₆ sealing system. Full digital monitoring control and protection capabilities, and an optimized user interface enable the F35 to be readily integrated into the smart grid.
Main Characteristics
Environment friendliness
- Low gas weight
- Advanced SF₆ sealing system
- Smart grid features including full-digital monitoring, control and protection
- Available in g³ up to 145 kV
High availability
- One of the best experiences and high data reliability
- Current transformers outside SF₆
- Drives and accessories at easy reach
- Pure-spring circuit breaker drives
Low costs of land and civil works
- One of the most compact GIS with bay footprint up to 45% below market average depending on kV rating
- Up to 2 bays (145 kV), up to 3 bays (72.5 kV), and complete bays (170 kV) assembled, wired, tested and shipped
- Isolating device for voltage transformer / surge arrester
Applicable for wind turbines at 72.5 kV
- Handle more power while reducing energy losses
- A compact HV substation fits in the wind turbine
- Withstands harsh environments
- Short installation time
Specifications
| General ratings | |||
| Reference electrotechnical standards | IEC/IEEE/GB | IEC/IEEE/GB | IEC/IEEE |
| Voltages | 72.5 kV | 145 kV | 170 kV |
| Withstand voltages | |||
| - Short-duration power-frequency, phase-to-earth / across isolating distance | 140/160 kV | 275/315 kV | 325/375 kV |
| - Lightning impulse, phase-to-earth / across isolating distance | 325/375 kVp | 650/750 kVp | 750/860 kVp |
| Frequency | 50/60 Hz | 50/60 Hz | 50/60 Hz |
| Continuous current | up to 2500A | up to 3150A | up to 4000A |
| Short-time withstand current | 31.5 kA | 40 kA | 50 kA |
| Peak withstand current | 85 kAp | 100/108 kAp | 125/130 kAp |
| Duration of short-circuit | 3s | 3s | 3s |
| Installation | Indoor | Indoor/outdoor | Indoor |
| Ambient temperature range | down to -30 / up to +55 °C | down to -30 / up to +55 °C | down to -25 / up to +55 °C |
| Circuit-breaker ratings | |||
| First-pole-to-clear factor | 1.5 | 1.5 | 1.5 |
| Short-circuit breaking current | 31.5 kA | 40 kA | 50 kA |
| Short-circuit making current | 80/82 kAp | 100/108 kAp | 125/130 kAp |
| Operating sequence | O-0.3s-CO-3 min-CO/CO-15s-CO | O-0.3s-CO-3 min-CO/CO-15s-CO | O-0.3s-CO-3 min-CO/CO-15s-CO |
| Drive type (three-phase or single-phase) | Pure-spring | Pure-spring | Pure-spring |
| Breaking time | 50 ms | 50 ms | 50 ms |
| Closing time | 70 ms | 95 ms | 100 ms |
| Mechanical endurance | M2 class | M2 class | M2 class |
| Capacitive switching | C2 class | C2 class | C2 class |
| Disconnector and low-speed earthing switch ratings | |||
| Capacitive current switching | 0.1 A | 0.1 A | 0.1 A |
| Bus-transfer current switching capability | 1600/10 A / V | 2520/20 A / V | 1600/10 A / V |
| Mechanical endurance | M2 class | M2 class | M2 class |
| Make-proof earthing switch ratings | |||
| Making current capability | 80/82 kAp | 100/108 kAp | 125/130 kAp |
| Switching capability - electromagnetic coupling | 80/2 A / kV | 80/2 A / kV | 80/2 A / kV |
| Switching capability - electrostatic coupling | 2/6 A / kV | 2/6 A / kV | 3/9 A / kV |
| Mechanical endurance | M1 class | M1 class | M1 class |
Recommended Products & services
F35 72.5 <span class="text-lowercase">k</span>V Dual Gas GIS
Our innovative F35 Dual Gas GIS, 50 or 60 Hz, has been designed to drive decarbonization...
View More
F35-145 <span class="lower-case">k</span>V Dual Gas GIS
Our F35-145 kV Dual-Gas GIS —compatible with both SF₆ and g³ gases—is designed to...
View More