GL 315 / GL 315X

Live tank circuit breaker for 362 kV
Reliable, Economical and Easy-to-Use

GE Vernova’s GL 315 and GL 315X live tank circuit breakers for outdoor installation feature third generation self-blast interrupter chambers and spring-operated mechanisms (FK). These field–proven interrupter chambers operate on the energy optimized self-blast principle. The FK3 type mechanisms equip the entire range of circuit breakers with more than 180,000 references worldwide.

GL 315 / GL 315X

Live tank circuit breaker for 362 kV
Reliable, Economical and Easy-to-Use

GE Vernova’s GL 315 and GL 315X live tank circuit breakers for outdoor installation feature third generation self-blast interrupter chambers and spring-operated mechanisms (FK). These field–proven interrupter chambers operate on the energy optimized self-blast principle. The FK3 type mechanisms equip the entire range of circuit breakers with more than 180,000 references worldwide.

Flexible Options

  • Standard low voltage equipment provided, additional equipment is available
  • Composite insulators are available
  • Seismic dampers for high seismic request can be provided
  • Pressure relief system for passive protection of both substation and personnel
  • RPH3 controller: Pont-on-wave tripping and closing relays
  • CBWatch: compact and modular circuit breaker monitoring solution
  • Closing resistors solutions (CL 315D) to limit high and damaging overvoltages

Installation and Maintenance

  • Preset at factory before shipping; no adjustments necessary during installation and commissioning
  • Disassembly of interrupter chamber without removal of entire pole column possible

Advanced Testing

The 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

GE Vernova's quality (ISO 9001:2008), environmental (ISO 14001:2004) and occupational health and safety (OHSAS 18001:2007) management systems determine the development and production procedures for the high voltage circuit breakers. These systems ensure the high quality of the products and services, which are confirmed by regular audits.

Specifications
Breaker Type GL 315 / GL 3150GL 315X / GL 315XD
Number of breaks / phase 22
Rated normal voltagekV362362
Rated normal currentA4,0005,500
Rated frequencyHz50/6050
Rated dielectric withstand (up to 1,000 m)* (to earth / accross open device)

- At power frequency

- At lightning impulse (1.2 / 50 µs wave)

- At switching impulse



kV

kV (peak)

kV (peak)

 



450/520

1,175/1,175(+205)

950/800(+295)



450/520

1,175/1,175(+205)

950/800(+295)
Rated short-circuit breaking capacity

-Periodic component (r.m.s. value)

kA

50

63
First pole-to-clear factor 1.51.5
Peak short-circuit withstand currentkA (peak)137173
Rated line-charging capacitive switching Class C2Class C2
Mechanical endurance Class M2Class M2
Breaking timecycles2 - 2,32 - 2.3
* For other values, please contact us.

Drawings

gl-315-drawing

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GL 314 BPS

Live tank by-pass switch for series capacitor bank applications

Fast Closing By-Pass Switch

GE Vernova’s GL 314 By-Pass Switch (BPS) is designed to close very fast and protect series capacitor banks in case of a fault in the overhead lines. It is equipped with excelled live tank circuit breaker technology such as the third-generation self-blast interrupter chambers and spring-operated mechanisms (FK). These field–proven interrupter chambers operate on the optimized self-blast principle. The FK3 type mechanisms equip the entire range of circuit breakers with more than 180,000 references worldwide.

GL 314 BPS

Live tank by-pass switch for series capacitor bank applications

Fast Closing By-Pass Switch

GE Vernova’s GL 314 By-Pass Switch (BPS) is designed to close very fast and protect series capacitor banks in case of a fault in the overhead lines. It is equipped with excelled live tank circuit breaker technology such as the third-generation self-blast interrupter chambers and spring-operated mechanisms (FK). These field–proven interrupter chambers operate on the optimized self-blast principle. The FK3 type mechanisms equip the entire range of circuit breakers with more than 180,000 references worldwide.

High Quality Components

The GL 314 BPS live tank circuit breaker provides high reliability based in part on high quality components, including:

  • Three pole operating design
  • One self-blast interrupting unit with guard rings at  upper and lower positions
  • Supporting column is composed of two to four insulators (depending on the voltage to ground/earth)
  • Spring mechanism FK3 equipped with a position indicator visible from the outside
  • Field-proven, temperature-compensated density monitor with two-stage transducer and three-color dial
  • Easy access to the SF6 filling connection (type DILO)
  • Sealings suitable for temperatures down to -50 °C
  • Hot-dip galvanized steel parts and mechanism housing made completely of aluminum
Optional Components
  • Standard low voltage equipment provided, additional equipment is available
  • Composite insulators are available
  • Seismic dampers for high seismic request can be provided
  • Pressure relief system for passive protection of both substation and personnel
  • CBWatch: compact and modular circuit breaker monitoring solution
Installation and Maintenance
  • Preset at factory before shipping; no adjustments necessary during installation and commissioning
  • Disassembly of interrupter chamber without removal of entire pole column possible
Advanced Testing

The by-pass switch meets the requirements of national and international standards. This has been confirmed by comprehensive type tests according to the latest versions of IEC standards.

Certified Quality

GE Vernova's quality (ISO 9001:2008), environmental (ISO 14001:2004) and occupational health and safety (OHSAS 18001:2007) management systems determine the development and production procedures for the high voltage switches.

Specifications

TECHNICAL DATA*  
Network frequencyHz50 / 60

Insulation level

  • Up to 170 kV roted voltage across the by-pass switch
  • Up to 800 kV rated voltage to earth

 

kVp
kVp

 

750
2,100

Operating times

  • Rated closing time
  • Rated opening time

 

ms
ms

 

28 +/- 2
95

Rated making currentkAp120
Insertion currentA5,000
Insertion voltagekVp300

Cycles

  • With breaker open
  • With breaker closed
 

 

C - 0.2 s - OC - 15s
OC - 10s - OC

* Standard value, for other, please contact us

Drawings

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GL 314 / GL 314X

Live tank circuit breaker for 245 / 300 kV

Highly Reliable Performance

GE Vernova’s GL 314 and GL 314X live tank circuit breakers for outdoor installation feature third generation self-blast interrupter chambers and spring-operated mechanisms (FK). These field–proven interrupter chambers operate on the energy optimized self-blast principle. The FK3 type mechanisms equip the entire range of circuit breakers with more than 180,000 references worldwide.

GL 314 / GL 314X

Live tank circuit breaker for 245 / 300 kV

Highly Reliable Performance

GE Vernova’s GL 314 and GL 314X live tank circuit breakers for outdoor installation feature third generation self-blast interrupter chambers and spring-operated mechanisms (FK). These field–proven interrupter chambers operate on the energy optimized self-blast principle. The FK3 type mechanisms equip the entire range of circuit breakers with more than 180,000 references worldwide.

Customer Benefits

The GL 314 and GL 314X live tank circuit breaker provides high reliability based in part on high quality components, including:

  • Single pole or three pole operating design
  • Self-blast interrupter chambers
  • Spring mechanism FK3 equipped with a position indicator visible from the outside
  • Field-proven, temperature-compensated density monitor with two-stage transducer and three-color dial
  • Easy access to the SF₆ filling connection (type DILO)
  • Sealings suitable for temperatures down to -60 °C
  • Hot-dip galvanized steel parts and mechanism housing made completely of aluminum
Optional Components
  • Standard low voltage equipment provided, additional equipment is available
  • Composite insulators are available
  • Seismic dampers for high seismic request can be provided
  • Pressure relief system for passive protection of both substation and personnel
  • RPH3 controller: Pont-on-wave tripping and closing relays
  • CBWatch: compact and modular circuit breaker monitoring solution
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
  • Disassembly of interrupter chamber without removal of entire pole column possible
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 type* GL 314GL 314X
Number of breaks / phase

 

1

1

Rated normal voltage

kV

245 / 252

245

300
Rated normal current

A

4,400

4,000

Rated frequency

Hz

50

60

50

50

Rated dielectric withstand (up to 1,000 m)* (to earth / occross open device)

 

 

 

 

- At power frequency

kV

460/530

460/530

460/530

- At lightning impulse (1.2 / 50 µs wave)

kV (peak)

1,050/ 1,200

1,050/ 1,200

1,050/ 1,050(+170)

- At switching impulse

kV (peak)

N/A

N/A

850/700 (+245)

Roted short-circuit breaking capacity

- Periodic component (r.m.s. value)

kA

50

40

63

50

First pole-to-clear factor

 

1.3

1.5

1.3

1.3

Peak short-circuit withstand current

kA (peak)

137

110

173

137

Roted line-charging capac itive switching

 

Class C2

Class C2

Mechanical endurance

 

Class M 2

Class M2

Breaking time

cycles

2 - 2.3

2 - 2.3

* For other values, please contact us.

Drawings

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GL 313

Live tank circuit breakers from 145 kV up to 170 kV

Reliable Performance in Low Temperatures

GE Vernova’s GL 313 live tank circuit breaker for outdoor installation is designed for temperatures down to -55°C with gas mixture and -40°C with pure SF6, and feature the latest technologies in interrupter chambers and spring-operated mechanisms. Our latest double motion technology effectively reduces the opening energy by approximately 65%. The GL 313 live tank circuit breaker provides a high level of reliability, even under extreme conditions and climates, or in highly active seismic areas.

GL 313

Live tank circuit breakers from 145 kV up to 170 kV

Reliable Performance in Low Temperatures

GE Vernova’s GL 313 live tank circuit breaker for outdoor installation is designed for temperatures down to -55°C with gas mixture and -40°C with pure SF6, and feature the latest technologies in interrupter chambers and spring-operated mechanisms. Our latest double motion technology effectively reduces the opening energy by approximately 65%. The GL 313 live tank circuit breaker provides a high level of reliability, even under extreme conditions and climates, or in highly active seismic areas.

High Quality Components

The GL 313 live tank circuit breaker provides high reliability based in part on high quality components, including:

  • Interrupter chamber with integral double motion technology and self-blast system
  • 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
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.

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 313 F1/4031 P / GL 313 F3/4031 P
Rated voltage                                170 kV
Rated frequency 50/60 Hz
Rated normal current up to 3,150 A
Rated short circuit breaking current up to 40 kA
Rated short circuit making current 104 kA
Rated duration of short circuit3 s
Opening time                28 ms
Break time 50 ms
Closing time           ≤70 ms
Average ambient temperature *-30 °C up to +40 °C
Design altitude **1,000 m.a.s.l.
* Standard values according to IEC; temperatures down to -55 °C up to +70 °C and/or higher design altitudes available on request.

Drawings

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GL 310, GL 311 and GL 312

Live tank circuit breakers from 100 kV up to 145 kV
Reliable Performance in Low Temperatures

GE Vernova’s GL 310, GL 311 and GL 312 live tank circuit breakers for outdoor installation are designed for temperatures down to -60°C with gas mixture and -40°C with pure SF6 and feature the latest technologies in interrupter chambers and spring-operated mechanisms. Our latest double motion technology effectively reduces the opening energy by approximately 65%.

GL 310, GL 311 and GL 312

Live tank circuit breakers from 100 kV up to 145 kV
Reliable Performance in Low Temperatures

GE Vernova’s GL 310, GL 311 and GL 312 live tank circuit breakers for outdoor installation are designed for temperatures down to -60°C with gas mixture and -40°C with pure SF6 and feature the latest technologies in interrupter chambers and spring-operated mechanisms. Our latest double motion technology effectively reduces the opening energy by approximately 65%.

High Quality Components

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

  • Interrupter chamber with integral double motion technology and self-blast system
  • 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
  • Single-pole operated circuit breakers partially pre-assembled before delivery (base frame with the 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 310 F1/4031 P/ 
GL 310 F3/4031 P		GL 311 F1/4031 P/ 
GL 311 F3/4031 P		GL 312 F1/4031 P/ 
GL 312 F3/4031 P
Rated voltage100 kV123 kV145 kV
Rated frequency50/60 Hz50/60 Hz50/60 Hz
Rated normal currentup 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 kA
Rated short-circuit making current104 kA104 kA104 kA
Rated duration of short-circuit3 s3 s3 s
Opening time28 ms28 ms28 ms
Break time50 ms50 ms50ms
Closing time≤70 ms≤70 ms≤70 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.
* Standard values according to IEC; temperatures down to -55 °C up to +70 °C and/or higher design altitudes available on request

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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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SF₆-free g³ Gas-Insulated Lines

SF₆-free g³ Gas-Insulated Lines
For electrical networks up to 420 kV
Better for the grid, better for the planet
  • SF₆-free with g³, GE Vernova's game changing alternative to SF₆ as insulating medium enables a reduction of 99% of global warming potential
  • First-in-class gas sealing system
  • g³-420 kV GIL is a dual gas busbar system also compatible with SF₆.

SF₆-free g³ Gas-Insulated Lines

SF₆-free g³ Gas-Insulated Lines
For electrical networks up to 420 kV
Better for the grid, better for the planet
  • SF₆-free with g³, GE Vernova's game changing alternative to SF₆ as insulating medium enables a reduction of 99% of global warming potential
  • First-in-class gas sealing system
  • g³-420 kV GIL is a dual gas busbar system also compatible with SF₆.

Positive impact of 100 meters SF₆-free GIL

Calculate the CO2e reduction of my project with GE Vernova's g³ CO2 equivalent calculator

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

Applications

NATIONAL GRID, UK - Sellindge Substation, 230 m of 420 kV GIL, 63 kA, 4000 A, The world first SF₆-free g³ GIL
SP ENERGY NETWORKS, UK - Kilmarnock Substation, 177 m of 420 kV SF₆-free g³ GIL, 63 kA, 4000 A
SSEN TRANSMISSION, UK - New Deer Substation, 1020 m of 420 kV GIL, 40 kA, 4000 A, The longest SF₆-free g³ GIL in operation

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