GL 310 S, GL 311 S & GL 312 S

Live tank circuit breakers from 100 kV up to 145 kV

Reliable Performance in Low Temperatures

GE Vernova's GL 310 S, GL 311 S and GL 312 S live tank circuit breakers for outdoor installation are designed for temperatures down to -30 °C with pure SF₆. They feature the latest technologies in interrupter chambers and spring-operated mechanisms. Our latest single-motion technology provides an optimum solution for applications within this range of minimum temperature.

GL 310 S, GL 311 S & GL 312 S

Live tank circuit breakers from 100 kV up to 145 kV

Reliable Performance in Low Temperatures

GE Vernova's GL 310 S, GL 311 S and GL 312 S live tank circuit breakers for outdoor installation are designed for temperatures down to -30 °C with pure SF₆. They feature the latest technologies in interrupter chambers and spring-operated mechanisms. Our latest single-motion technology provides an optimum solution for applications within this range of minimum temperature.

High performance
  • Live tank circuit breakers ensure a high level of reliability
  • Even under extreme conditions and climates or in highly active seismic areas, customers can count on live tank circuit breakers made by GE Vernova
Right choice for temperatures down to -30 °C
  • Three-pole operated mechanism live tank circuit breakers for outdoor installation are designed for temperatures down to -30 °C and feature the latest technologies in interrupting chambers and spring-operated mechanisms
Reduced gas mass/ environmental impact
  • SF₆ volume reduced by 15% compared to previous version while optimizing the internal volume
  • CO2 equivalence of gas mass reduced by 29 tons
Safety
  • Pressure relief device prevents from injuries and damages in case of over-pressure within the circuit breaker
  • Support frame design ensures personnel cannot be injured by cinematic moving parts
  • Dedicated tools are designed to assemble and disassemble circuit breaker parts in safe condition
Easy Installation and Light Maintenance
  • Preset and pre-filled at factory before shipping - no adjustments necessary during installation and commissioning
  • Long maintenance intervals
  • Easy access to desiccant bags and simple inspections
  • Two-stage transducer densimeters are within easy reach, on the front side of the circuit breaker, for periodic/regular check
Quality and Testing

GE Vernova's live tank circuit breakers meet the latest versions of national and international standards, such as IEC 62271-100. The entire development and production procedures are fully compliant with the latest ISO 9001, ISO 14001 and OHSAS 18001 quality standards.

High Quality Components

The GL 310 S, GL 311 S, and GL 312 S live tank circuit breakers provide high reliability based on high quality components, including :

  • Interrupter chamber with self-blast system and reliable single-motion technology
  • Reliable spring-operated mechanism with position indicator clearly visible from outside
  • Pressure relief system for passive protection of substation and personnel
  • Field-proven, temperature-compensated density monitor with two-stage transducer and three-color dial
  • Easy access to the SF₆ filling connection (DILO type)
  • SF₆ non-return (check) valve on each pole column
  • Opening and closing spring in drive
  • Steel support frame design prevents corrosion issues and provides high safety for employees and high protection against environmental ingress (e.g. ice)
  • Optimum designed cinematic between mechanism and interrupting chamber to increase mechanical energy efficiency and mechanical moving parts reliability
Technical Characteristics
  • Spring-operated mechanism / degree of protection : FK 3-1 / IP 55
  • Rated operating sequence : O-0.3s-CO-3min-CO resp. CO-15s-CO
  • Rated supply voltage : From 24 V up to 250 V dc/ac
Product Options
  • CBWatch monitoring system

Specifications

Breaker typeGL 310 SGL 311 SGL 312 S
Rated voltage100 kV123 kV145 kV
Rated frequency50 Hz50 Hz50 Hz
Rated normal current3,150 A3,150 A3,150 A
Rated short-circuit breaking current40 kA40 kA40 kA
Rated short-circuit making current100 kA100 kA100 kA
Rated duration of short-circuit3 s3 s3 s
First Pole to clear factor1.3/1.51.3/1.51.3/1.5
Opening time27-37 ms27-37 ms27-37 ms
Breaking time50-60 ms50-60 ms50-60 ms
Closing time70 ms70 ms70 ms
Average ambient temperature**-30 °C up to +40 °C-30 °C up to +40 °C-30 °C up to +40 °C
Design altitude*1,000 m.a.s.l.1,000 m.a.s.l.1,000 m.a.s.l.
Pollution level**25 mm/kV25 mm/kV25 mm/kV
* Standard values according to IEC. Higher design altitudes available on request
** Other temperatures and pollution levels available on request

Drawings

GL 311 S/312 S – other phase center distance available on request

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GL 309g, GL 310g, GL 311g and GL 312g

g³ live tank circuit breakers from 72.5 kV up to 145 kV

GE Vernova’s GL 309g, 310g, GL 311g and GL 312g live tank circuit breakers for outdoor installation are designed for temperatures down to -30°C. These SF₆-free breakers use GE Vernova’s g³ to replace SF₆ as switching gas. They feature the latest technologies in interrupting chambers and spring-operated mechanisms. They are based on GE Vernova’s latest double motion technology which effectively reduces the needed opening energy.

GL 309g, GL 310g, GL 311g and GL 312g

g³ live tank circuit breakers from 72.5 kV up to 145 kV

GE Vernova’s GL 309g, 310g, GL 311g and GL 312g live tank circuit breakers for outdoor installation are designed for temperatures down to -30°C. These SF₆-free breakers use GE Vernova’s g³ to replace SF₆ as switching gas. They feature the latest technologies in interrupting chambers and spring-operated mechanisms. They are based on GE Vernova’s latest double motion technology which effectively reduces the needed opening energy.

High Quality Components

The GL 3109g, GL 310g, GL 311g and GL 312g live tank circuit breakers provide high reliability based on high quality components, including:

  • Interrupter chamber with integral double motion technology and self-blast system
  • Composite insulator and pressure relief system for passive protection of both substation and personnel
  • Field-proven, temperature-compensated density monitor with two-stage transducer and three-color dial
  • Easy access to the g³ filling connection (DILO type with g3 specific thread)
  • g³ non-return (check) valve on each pole column
  • Hot-dip galvanized steel parts
  • Rust free mechanism housing made completely of aluminum
  • Reliable spring-operated mechanism with position indicator clearly visible from outside
  • CBWatch gas monitoring available on request (optional)

Installation, Operation and Maintenance

  • As easy on-site installation as with SF₆ CB
  • Preset at factory before shipping; no adjustments necessary during installation and commissioning
  • Pole units pre-filled with g³ at factory before shipping
  • Independent disassembly of the interrupter chamber without having to remove the entire pole column

Advanced Testing

Our live tank circuit breakers meet the requirements of national and international standards. This has been confirmed by comprehensive type tests according to the latest IEC standards.

Certified Quality

The entire development and production procedures for our live tank circuit breakers are fully compliant with the latest ISO 9001, ISO 14001 and OHSAS 18001 quality standards. This ensures the high quality of our products and services, which is confirmed by regular audits.

Specifications

Breaker typeGL 309g F3/4031GL 310g F3/4031GL 311g F3/4031GL 312g F3/4031
Rated voltage72.5 kV100 kV123 kV145 kV
Rated frequency50 Hz50 Hz50 Hz50 Hz
Rated normal currentup to 3,150 Aup to 3,150 Aup to 3,150 Aup to 3,150 A
Rated short-circuit breaking currentup to 40 kAup to 40 kAup to 40 kAup to 40 kA
Rated short-circuit making current104 kA104 kA104 kA104 kA
Rated duration of short-circuit3 s3 s3 s3 s
Opening time31 ms31 ms31 ms31 ms
Break time50 ms50 ms50 ms50 ms
Closing time100 ms100 ms100 ms100 ms
Average ambient temperature-30 °C up to +40 °C-30 °C up to +40 °C-30 °C up to +40 °C-30 °C up to +40 °C
Design altitude*1,000 m.a.s.l.1,000 m.a.s.l.1,000 m.a.s.l.1,000 m.a.s.l.
* Standard values according to IEC; Higher design altitudes available on request

Drawings

gl310g-drawing Other dimensions available on request.

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GL 308 and GL 309

Live tank circuit breakers for 52 kV and 72.5 kV
Highly Reliable Performance

GE Vernova’s GL 308 and GL 309 live tank circuit breakers for outdoor installation are provided with third-generation self-blast interrupter chambers and spring-operated mechanisms. The field-proven interrupter chamber operates on the energy-optimized self-blast principle. This live tank circuit breaker provides a high level of reliability for customers, even under extreme conditions and climates or in highly active seismic areas.

GL 308 and GL 309

Live tank circuit breakers for 52 kV and 72.5 kV
Highly Reliable Performance

GE Vernova’s GL 308 and GL 309 live tank circuit breakers for outdoor installation are provided with third-generation self-blast interrupter chambers and spring-operated mechanisms. The field-proven interrupter chamber operates on the energy-optimized self-blast principle. This live tank circuit breaker provides a high level of reliability for customers, even under extreme conditions and climates or in highly active seismic areas.

High Quality Components

The GL 308 and GL 309 live tank circuit breakers provide high reliability based in part on high quality components, including:

  • Third-generation self-blast interrupter chamber
  • Pressure relief system for passive protection of both substation and personnel
  • Field-proven, temperature-compensated density monitor with two-stage transducer and three-color dial
  • Easy access to the SF₆ filling connection (type DILO)
  • SF₆ non-return (check) valve on each pole column
  • Protected opening springs inside each pole column
  • Hot-dip galvanized steel parts
  • Mechanism housing made completely of aluminum
  • Reliable spring-operated mechanism with position indicator clearly visible from outside
Installation and Maintenance
  • Preset at factory before shipping; no adjustments necessary during installation and commissioning
  • Pole units pre-filled with SF₆ at factory before shipping
  • Independent disassembly of the interrupter chamber without having to remove the entire pole column
  • Circuit breaker completely pre-assembled before delivery
    • Three-pole operated circuit breakers: pole columns mounted on base frame
    • Single-pole operated circuit breakers: base frame with mounted and wired mechanisms
Advanced Testing

Our live tank circuit breakers meet the requirements of national and international standards. This has been confirmed by comprehensive type tests according to the latest IEC and ANSI standards.

Certified Quality

The entire development and production procedures for our live tank circuit breakers are fully compliant with the latest ISO 9001, ISO 14001 and OHSAS 18001 quality standards. This ensures the high quality of our products and services, which is confirmed by regular audits.

Specifications

Breaker typeGL 308 F1/3120/ 
GL 308 F3/3120		GL 308 F1/3120/ 
GL 308 F3/3120		GL 309 F1/3120/ 
GL 309 F3/3120		GL 309 F1/3120 
/GL 309 F3/3120
Rated voltage52 kV52 kV72.5 kV72.5 kV
Rated frequency50 Hz60 Hz50 Hz60 Hz
Rated normal currentup to 2,000 Aup to 2,000 Aup to 2,000 Aup to 2,000 A
Rated short-circuit breaking currentup to 31.5 kAup to 25 kAup to 31.5 kAup to 25 kA
Rated short-circuit making current80 kA65 kA80 kA65 kA
Rated duration of short-circuit3 s3 s3 s3 s
Opening time38 ms38 ms38 ms38 ms
Breaking time50 ms50 ms50 ms50 ms
Closing time≤70 ms≤70 ms≤70 ms≤70 ms
Average ambient temperature*-30 oC up to +40 oC-30 oC up to +40 oC-30 oC up to +40 oC-30 oC up to +40 oC
Design altitude*1,000 m.a.s.l.1,000 m.a.s.l.1,000 m.a.s.l.1,000 m.a.s.l.
* Standard values according to IEC; temperatures up to +70 oC and / or higher altitudes available on request

RATINGS

Breaker typeGL 309 F1/4031 P
Rated voltage72.5 kV
Rated frequency50/60 Hz
Rated normal currentup to 3,150 A
Rated short-circuit breaking currentup to 40 kA
Rated short-circuit making current104 kA
Rated duration of short-circuit3 s
Opening time29 ms
Breaking time50 ms
Closing time≤70 ms
Average ambient temperature*-30 oC up to +40 oC
Design altitude*1,000 m.a.s.l.
* Standard values according to IEC; temperatures down to -40 oC up to +70 oC and / or higher altitudes available on request

Drawings

gl-309-drawing
gl-309

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GL 107X

Live tank circuit breaker from 36 kV up to 40.5 kV
Highly Reliable Performance

GE Vernova’s GL 107X live tank circuit breakers for outdoor installation are provided with third-generation self-blast interrupter chambers and spring-operated mechanisms. The field-proven interrupter chamber operates on the energy-optimized self-blast principle. This live tank circuit breaker provides a high level of reliability for customers, even under extreme conditions and climates or in highly active seismic areas.

GL 107X

Live tank circuit breaker from 36 kV up to 40.5 kV
Highly Reliable Performance

GE Vernova’s GL 107X live tank circuit breakers for outdoor installation are provided with third-generation self-blast interrupter chambers and spring-operated mechanisms. The field-proven interrupter chamber operates on the energy-optimized self-blast principle. This live tank circuit breaker provides a high level of reliability for customers, even under extreme conditions and climates or in highly active seismic areas.

High Quality Components

The GL 107X live tank circuit breaker provides high reliability based in part on high quality components, including:

  • Third-generation self-blast interrupter chamber
  • Operating linkages in one common gas enclosure forming part of the base frame
  • Only one seal is dynamically stressed
  • Insulator flanges sealed with Portland cement
  • Pressure relief system for passive protection of both substation and personnel
  • Compact design in line with considerations of current transformers
  • Field-proven, temperature-compensated density monitor with two-stage transducer and three-color dial
  • Easy access to the SF₆ filling connection (type DILO)
  • Extruded aluminum base frame
  • Reliable spring-operated mechanism with position indicator clearly visible from outside
Installation and Maintenance
  • Preset at factory before shipping; no adjustments necessary during installation and commissioning
  • Pre-filled with SF₆ at factory before shipping
  • Circuit breaker completely assembled before delivery (pole columns, base frame and spring-operated mechanism
Advanced Testing

Our live tank circuit breakers meet the requirements of national and international standards. This has been confirmed by comprehensive type tests according to the latest IEC and ANSI standards.

Certified Quality

The entire development and production procedures for our live tank circuit breakers are fully compliant with the latest ISO 9001, ISO 14001 and OHSAS 18001 quality standards. This ensures the high quality of our products and services, which is confirmed by regular audits.

Specifications

Breaker typeGL 107X F1/3120GL 107X F1/3120GL 107X F1/3120
Rated voltage36 kV38 kV40.5 kV
Rated frequency50 Hz60 Hz50 Hz
Rated normal currentup to 2,000 Aup to 2,000 Aup to 2,000 A
Rated short-circuit breaking currentup to 31.5 kAup to 25 kAup to 31.5 kA
Rated short-circuit making current80 kA65 kA80 kA
Rated duation of short-circuit3 s3 s3 s
Opening time29 ms29 ms29 ms
Breaking time50 ms50 ms50 ms
Closing time58 ms58 ms58 ms
Average ambient temperature*-30 oC up to +40 oC-30 oC up to +40 oC-30 oC up to +40 oC
Design altitude*1,000 m.a.s.l.1,000 m.a.s.l.1,000 m.a.s.l.
* Standard values according to IEC; temperatures up to +70 oC and / or higher altitudes available on request

Drawings

Drawings

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T155 DUAL GAS GIL

One 420 kV GIL design for SF₆ and SF₆-free

GE Vernova's Grid Solutions offers cutting-edge gas-insulated lines (GIL) up to 420 kV designed for both SF6 and SF6-free applications, leveraging more than 60 years of expertise in gas-insulated substation technology. This unique flexible design allows transmission system operators (TSOs) to purchase the SF6 version initially with the option to transition easily to the SF6-free g³ solution, ensuring compliance with emerging regulations on fluorinated greenhouse gases without compromising operational performance.

T155 DUAL GAS GIL

One 420 kV GIL design for SF₆ and SF₆-free

GE Vernova's Grid Solutions offers cutting-edge gas-insulated lines (GIL) up to 420 kV designed for both SF6 and SF6-free applications, leveraging more than 60 years of expertise in gas-insulated substation technology. This unique flexible design allows transmission system operators (TSOs) to purchase the SF6 version initially with the option to transition easily to the SF6-free g³ solution, ensuring compliance with emerging regulations on fluorinated greenhouse gases without compromising operational performance.

g³ gas GIL Specifications

RATINGS   
VoltagekV362420
Standards IEC/IEEEIEC/IEEE
FrequencyHz50/6050/60
Withstand voltages, to earth
- Short-duration power-frequency
- Switching impulse
- Lightning impulse
kV
kV (peak)
kV (peak)
650
1050
1425
650
1050
1425
Continuous currentA4,000/5,0004,000/5,000
Short-time withstand currentkA6363
Peak withstand currentkAp170170
Temperature°C-30-25/-30

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T210 up to 800 kV

Gas-Insulated Substations up to 800 kV

GE Vernova's T210 GIS is a field-proven solution with high availability that meets the challenges of networks up to 800 kV for power generation, transmission, distribution, tertiary and heavy industry applications. The T210 is one of the most compact GIS solutions available at 800 kV with a footprint 65% below the market average. It is comprised of small, light components making it easy to handle.

T210 up to 800 kV

Gas-Insulated Substations up to 800 kV

GE Vernova's T210 GIS is a field-proven solution with high availability that meets the challenges of networks up to 800 kV for power generation, transmission, distribution, tertiary and heavy industry applications. The T210 is one of the most compact GIS solutions available at 800 kV with a footprint 65% below the market average. It is comprised of small, light components making it easy to handle.

Customer Benefits

Customer Benefits

Main Characteristics

Environment friendliness
  • Lowest gas weight on the market
  • First-in-class SF₆ sealing system
High availability
  • Design grounded by 50 years of experience
  • Current transformers outside SF₆
Low costs of land and civil works
  • Most compact GIS: footprint 65% below market average
Shortest site works
  • Light and small components, easy to handle
Smart grid features
  • full-digital monitoring, control and protection
 

Specifications

General ratings
Reference electrotechnical standardsIEEE/IEC
Voltages765/800 kV
Withstand voltages 
- Short-duration power-frequency, phase-to-earth / across isolating distance960/1270 kV
- Switching impulse, phase-to-earth / across open switching device1550/1200 (+653) kVp
- Lightning impulse, phase-to-earth / across isolating distance2100 /2100 (+460) kVp
Continuous current5000 A
Short-time withstand current50 kA
Peak withstand current125 kAp
Circuit-breaker ratings
First-pole-to-clear factor1.3
Short-circuit breaking current50 kA
Short-circuit making current125 kAp
Breaking time<45ms
Pre-insertion resistor rating>340 Ω
Mechanical enduranceM2 class
Disconnector ratings
Bus-transfer current switching capability1600/40 (3200/300 option) A/V
Mechanical enduranceM2 class

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T168 up to 550 kV

Gas-Insulated Substations up to 550 kV

GE Vernova makes the most of 50 years of experience in design, material selection, development, engineering, manufacturing and servicing of gas-insulated substations. GE Vernova's T168 GIS meet the challenges of networks up to 550 kV for all applications: power generation, transmission and heavy industry.

The T168 is compact and accessible, with a bay footprint 12% below previous version.

T168 up to 550 kV

Gas-Insulated Substations up to 550 kV

GE Vernova makes the most of 50 years of experience in design, material selection, development, engineering, manufacturing and servicing of gas-insulated substations. GE Vernova's T168 GIS meet the challenges of networks up to 550 kV for all applications: power generation, transmission and heavy industry.

The T168 is compact and accessible, with a bay footprint 12% below previous version.

Customer Benefits

Customer Benefits

Characteristics

Environment friendliness
  • Gas mass reduced by 6% compared with previous version
  • First-in-class SF₆ sealing system
  • Advanced gas management systems
High availability
  • Reliability is founded on GE Vernova’s extensive experience at 550 kV
  • Current transformers outside SF₆
  • Outstanding accessibility: drives and accessories at easy reach
Low costs of land and civil works
  • Bay volume reduced by 12% compared to previous models
Smart grid features
  • Full-digital monitoring, control and protection

Ratings

Bay  
Reference electrotechnical standards IEC/GB
VoltagekV550
Withstand voltages  
Short-duration power-frequency, phase-to-earth/across open switching devicekV740 / 740 (+315)
Switching impulse, phase-to-earth / across isolating distancekVp1 300 / 1 175 (+450)
Lightning impulse, phase-to-earth / across open switching devicekVp1 675 / 1 675 (+450)
FrequencyHz50 / 60
Continuous currentAup to 6300
Short-time withstand currentkA63
Peak withstand currentkAp170
Duration of short-circuits3
Installation indoor/outdoor
CIRCUIT-BREAKER RATINGS
First-pole-to-clear factor 1.3
Short-circuit breaking currentkA63
Short-circuit making currentkAp170
Operating sequence O-0.3s-CO-3 min-CO/CO-15s-CO
Capacitive switchingClassC2
DISCONNECTOR AND LOW-SPEED EARTHING SWITCH RATINGS
Capacitive current switchingA0.5
Bus-transfer current switching capabilityA / Vup to 4000 / 100
MAKE-PROOF EARTHING SWITCH RATINGS
Making current capabilitykAp170
Switching capability-electromagnetic couplingA / kVup to 200 / 25
Switching capability-electrostatic couplingA / kVup to 50 / 50
other data available on request.  

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B105 up to 245 kV

Gas-Insulated Substations up to 245 kV

GE Vernova's B105 GIS is a compact, field-proven solution with high availability that meets the challenges of networks up to 245 kV for power generation, transmission, distribution, tertiary and heavy industry applications. The B105 is available in several ratings:

B105 up to 245 kV

Gas-Insulated Substations up to 245 kV

GE Vernova's B105 GIS is a compact, field-proven solution with high availability that meets the challenges of networks up to 245 kV for power generation, transmission, distribution, tertiary and heavy industry applications. The B105 is available in several ratings:

Customer Benefits

Customer Benefits

Main Characteristics

Environment friendliness
  • Low gas weight
  • Advanced SF₆ sealing system
  • Smart grid features including full-digital monitoring, control and protection
High availability
  • One of the best experiences and high data reliability
  • Current transformers outside SF₆
  • Pure-spring circuit breaker drives
  • State-of-the-art maintenance isolating device: major repair and HV tests with no more than 1 bay down
  • Drives and accessories at easy reach
Low costs of land and civil works
  • One of the most compact GIS with single-phase enclosures only: bay footprint up to 50% below market average depending on kV rating
  • Complete bays assembled, wired, tested and shipped
  • Light and small single-phase components, easy to handle

Specifications

General ratings
Reference electrotechnical standardsIEC/IEEE/GB
Voltagesup to 245 kV
Withstand voltages 
- Short-duration power-frequency, phase-to-earth / across isolating distance460/530 kV
- Lightning impulse, phase-to-earth / across isolating distance1050/1200 kVp
Frequency50/60 Hz
Continuous current3150/4000 A
Short-time withstand current50/63 kA
Peak withstand current135/170 kAp
Duration of short-circuit3s
InstallationIndoor/outdoor
Ambient temperature rangedown to -25 / up to +55 °C
Circuit-breaker ratings
First-pole-to-clear factor1.3-1.5
Short-circuit breaking current50/63 kA
Short-circuit making current135/170 kAp
Operating sequenceO-0.3s-CO-3 min-CO/CO-15s-CO
Drive type (three-phase or single-phase)Pure-spring
Breaking time<50 ms
Closing time<100 ms
Mechanical enduranceM2 class
Capacitive switchingC2 class
Disconnector and low-speed earthing switch ratings
Capacitive current switching0.25 A
Bus-transfer current switching capability1600 A / 20 V
Mechanical enduranceM2 class
Make-proof earthing switch ratings
Making current capability135/170 kAp
Switching capability - electromagnetic coupling80 A / 2 kV
Switching capability - electrostatic coupling3 A / 12 kV
Mechanical enduranceM1 class

 

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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.

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.

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 standardsIEC/IEEE/GBIEC/IEEE/GBIEC/IEEE
Voltages72.5 kV145 kV170 kV
Withstand voltages   
- Short-duration power-frequency, phase-to-earth / across isolating distance140/160 kV275/315 kV325/375 kV
- Lightning impulse, phase-to-earth / across isolating distance325/375 kVp650/750 kVp750/860 kVp
Frequency50/60 Hz50/60 Hz50/60 Hz
Continuous currentup to 2500Aup to 3150Aup to 4000A
Short-time withstand current31.5 kA40 kA50 kA
Peak withstand current85 kAp100/108 kAp125/130 kAp
Duration of short-circuit3s3s3s
InstallationIndoorIndoor/outdoorIndoor
Ambient temperature rangedown to -30 / up to +55 °Cdown to -30 / up to +55 °Cdown to -25 / up to +55 °C
Circuit-breaker ratings
First-pole-to-clear factor1.51.51.5
Short-circuit breaking current31.5 kA40 kA50 kA
Short-circuit making current80/82 kAp100/108 kAp125/130 kAp
Operating sequenceO-0.3s-CO-3 min-CO/CO-15s-COO-0.3s-CO-3 min-CO/CO-15s-COO-0.3s-CO-3 min-CO/CO-15s-CO
Drive type (three-phase or single-phase)Pure-springPure-springPure-spring
Breaking time50 ms50 ms50 ms
Closing time70 ms95 ms100 ms
Mechanical enduranceM2 classM2 classM2 class
Capacitive switchingC2 classC2 classC2 class
Disconnector and low-speed earthing switch ratings
Capacitive current switching0.1 A0.1 A0.1 A
Bus-transfer current switching capability1600/10 A / V2520/20 A / V1600/10 A / V
Mechanical enduranceM2 classM2 classM2 class
Make-proof earthing switch ratings
Making current capability80/82 kAp100/108 kAp125/130 kAp
Switching capability - electromagnetic coupling80/2 A / kV80/2 A / kV80/2 A / kV
Switching capability - electrostatic coupling2/6 A / kV2/6 A / kV3/9 A / kV
Mechanical enduranceM1 classM1 classM1 class

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F35-145 kV Dual Gas GIS

SF₆ and SF₆-free g³-Gas-Insulated Substations up to 145 kV

Our F35-145 kV Dual-Gas GIS —compatible with both SF₆ and g³ gases—is designed to meet the demands of electrical networks up to 145 kV. It is ideally suited for a wide range of applications, including offshore and onshore wind power generation, distribution networks, infrastructure projects, and industrial installations.

Main Characteristics

Environment friendliness
  • SF₆-free using GE Vernova’s g³ gas mixture instead of SF₆
  • No pollution transfer in form of raw material increase
  • GWP of the gas mass reduced by 99%
  • Advanced sealing system
High availability
  • Same principles, interfaces, operating mechanisms for both product in g³ and SF₆
  • Easy access to drives and accessories
  • 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 allows to have low civil work and compact switchgear buildings
  • Up to 2 bays 145 kV assembled, wired, tested and shipped
  • Isolating device for voltage transformer and surge arrester
Smart Grid ready
  • Smart grid features including full-digital monitoring, control and protection
  • One of the best experiences and high data reliability
  • Digital substation ready with LPITs (Low Power Instrument Transformers)

Specifications

General ratings
Reference electrotechnical standards

IEC

Voltages

Up to 145 kV

Insulating and switching medium

g³ gas mixture

Withstand voltages
Short-duration power-frequency, phase-to-earth / across isolating distance

275/315 kV

Lightning impulse, phase-to-earth / across isolating distance

650/750 kVp

Frequency

50 Hz

Continuous current

up to 3150 A

Short-time withstand current

40 kA

Peak withstand current

108 kAp

Duration of short-circuit

3s

Circuit-breaker ratings
First-pole-to-clear factor

1.5

Short-circuit breaking current

40 kA

Short-circuit making current

108 kAp

Operating sequence

O-0.3s-CO-3 min-CO
CO-15s-CO

Drive type (three-phase or single-phase)

Pure-spring

Breaking time

50ms

Closing time

95ms

Mechanical endurance

M2 class

Capacitive switching

C2 class

Disconnector and low-speed earthing switch ratings
Capacitive current switching

0.1 A

Bus-transfer current switching capability

2520/20 A / V

Mechanical endurance

M2 class

Make-proof earthing switch ratings
Making current capability

108 kAp

Switching capability - electromagnetic coupling

80/2 A / kV

Switching capability - electrostatic coupling

2/6 A / kV

Mechanical endurance

M1 class

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