GE Vernova's dead tank circuit breakers are available for single or three pole operation, qualified to IEEE and IEC standards and available from 38 kV up to 550 kV.

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Dead Tank Circuit Breakers
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State-of-the-Art Technology

GE Vernova’s DT series of dead tank circuit breakers are characterized by advanced self-blast interrupters, leak-resistant, cast aluminum single piece enclosures and durable, low-energy spring-operated mechanisms. More than 120,000 circuit breakers with self-blast interrupters and FK spring-operated mechanisms have been in service since 1989.

DT1-245P 63

Dead Tank Circuit Breaker for 245 kV / 63 kA
State-of-the-Art Technology

GE Vernova’s DT series of dead tank circuit breakers are characterized by advanced self-blast interrupters, leak-resistant, cast aluminum single piece enclosures and durable, low-energy spring-operated mechanisms. More than 120,000 circuit breakers with self-blast interrupters and FK spring-operated mechanisms have been in service since 1989.

Learn about GE Vernova’s advantages in dead tank circuit breaker technology

Spring-Spring-Operated Mechanism

The reduced energy requirements within the breaking chamber allows for the utilization of GE Vernova’s world class FK spring-spring mechanism. The combination of the proven FK drive mechanism and interrupter technology results in a significant reduction of reaction forces, thereby reducing foundation design requirements.

SF6-Gas Tightness Guarantee

GE Vernova is a leader in the industry in SF6 gas tightness testing technology including seals, castings, and plumbing systems. Each breaker is factory tested using GE Vernova’s proprietary gas tightness testing system which provides measurable, quantifiable test results on the breaker in its fully assembled, as-shipped condition.

Certified Quality

GE Vernova designs, manufactures, tests and delivers its circuit breakers in accordance with the latest IEEE/ANSI and IEC standards, maintaining a quality assurance system according to ISO 9011 and ISO 14001 certifications.

Superior Manufacturing & Domestic Content

The center of excellence for dead tank circuit breakers is located in Charleroi, PA (USA), where dead tank circuit breakers up to 550 kV and live tank circuit breakers up to 800 kV are assembled. The production lines feature high degree of domestic content, which can help to facilitate compliance with national requirements. In addition, the complete wiring and assembling of low voltage control cabinets and mechanism cabinets is done locally, resulting in greater flexibility to respond to utility needs.

Simplified Installation and Maintenance

The DT1-245P 63 model is factory tested and prepared for shipment with bushings assembled and pre-filled with SF6 gas. As a result, the on-site installation requires only a few simple steps without requiring any special tools. The DT1-245P 63 circuit breaker range has lower maintenance costs and requirements owing to an engineering and design philosophy that has focused on these key needs since the inception of the development process.

Specifications

IEEE/ANSIIECValueUnits
Rated maximum voltageRated Voltage245kV
Rated power frequencyRated frequency60/50Hz
Dry withstandAt power frequency dry425/460kV

 
Rated Lighning impulse withstand voltageAt lighting impulse900/1,050kV
Rated chopped wave impulse voltage 2 µs 1,160kV
Rated continuous currentRated normal current3,000/4,000/5,000A
Rated short-circuit currentRated short-circuit breaking current63kA
Rated closing, latching and short time carrying 164kA
 Rated short-circuit making current164kA
Rated capacitance switching*   
Rated Interrupting time 2/3cycles
 Rated break time33/50ms
Rated standard operating duty 0-0,3s-CO-15s-CO 

* Ratings available upon request. Contact GE Vernova for special purpose, high TRV, high X/R or other ratings requirements.

Technical DataValueUnits
Ambient temperature range*-30 +40degree C
Seismic withstand in accordance with IEEE 693-2018  
Creepage distance168/4,257inches/mm
Closing resistor (optional)*  
Weight (without current transformers)8,015/3,643 (GO) and 8,894/4,043 (IPO)lbs/kg
Weight of SF6143/65lbs/kg

* Alternate values upon request

Drawings

DT1-145 63 Three-pole gang operation
DT1-145 63 Independent pole operation
State-of-the-Art Technology

GE Vernova’s DT series of dead tank circuit breakers are characterized by advanced self-blast interrupters, leak-resistant, cast aluminum enclosures and durable, low-energy spring-operated mechanisms. More than 100,000 circuit breakers with self-blast interrupters and FK spring-operated mechanisms have been in service since 1989.

DT1-245P

Dead Tank Circuit Breaker for 245 kV
State-of-the-Art Technology

GE Vernova’s DT series of dead tank circuit breakers are characterized by advanced self-blast interrupters, leak-resistant, cast aluminum enclosures and durable, low-energy spring-operated mechanisms. More than 100,000 circuit breakers with self-blast interrupters and FK spring-operated mechanisms have been in service since 1989.

Learn about GE Vernova’s advantages in dead tank circuit breaker technology

Spring-spring mechanism

The reduced energy requirements of the breaking chamber allows for the utilization of the world class FK spring-spring mechanism. The combination of the proven FK drive mechanism and interrupter technology results in a significant reduction of reaction forces, thus reducing foundation design requirements.

Gas Tightness Guarantee

GE Vernova leads the industry in SF6 gas tightness testing technology including seals, castings, and plumbing systems. Each breaker is factory tested using GE Vernova’s proprietary gas tightness testing system which provides measurable, quantifiable test results on the breaker in its fully assembled, as-shipped condition.

Certified Quality

GE Vernova designs, manufactures, tests and delivers its circuit breakers in accordance with the latest IEEE/ANSI and IEC standards, maintaining a quality assurance system according to ISO-9011 and ISO-14001 certifications. The center of excellence for dead tank circuit breakers is located in Charleroi, PA.

Installation and Maintenance

The DT1-245 series is factory tested and prepared for shipment with bushings assembled and prefilled with SF6 gas, therefore the on-site installation requires only a few simple steps without requiring any special tools. The DT1-245 circuit breaker range has lower maintenance costs and requirements, thanks to an engineering and design philosophy that has focused on these key needs since the inception of the development process.

Specifications

IEEE/ANSIIECValueUnits
Rated maximum voltageRated voltage245kV
Rated power frequencyRated frequency50/60Hz
Dry withstandAt power frequency,dry425/460kV

 
Rated lightning impulse withstand voltageAt lightning impulse900/1,050kV
Rated chopped wave impulse voltage 2us 1,160kV
Rated continuous currentRated normal current3,000/4,000A
Rated short-circuit currentRated short-circuit breaking current40

 
kA
Rated closing,latching and short time carrying 104kA
 Rated short-circuit making current104kA
Rated capacitance switching*   
Rated interrupting time 3cycles
 Rated break time50ms
Rated standard operating duty O-CO-15s-CO
O-0.3s-CO-180s-CO
*Rating available upoon request
**Contact Grid Solutions for special purpose, high TRV, high X/R or other ratings requirements.

Drawings

DT1-245-P
State-of-the-Art Technology

The DT1-145R-40 is a dead tank circuit breaker furnished with integral pre-insertion resistors (PIRs). It may be used for switching of lines, transformers, shunt capacitors, or shunt reactors. It is specifically designed and tested for general or definite purpose applications as well as for severe environmental conditions including low temperatures, highly active seismic areas, and regions with high pollution levels or corrosive atmospheres.

DT1-145R-40

Dead Tank Circuit Breaker with Pre-Insertion Resistors
State-of-the-Art Technology

The DT1-145R-40 is a dead tank circuit breaker furnished with integral pre-insertion resistors (PIRs). It may be used for switching of lines, transformers, shunt capacitors, or shunt reactors. It is specifically designed and tested for general or definite purpose applications as well as for severe environmental conditions including low temperatures, highly active seismic areas, and regions with high pollution levels or corrosive atmospheres.

Gas Tightness Guarantee

Grid Solutions at GE Vernova leads the industry in SF6 gas tightness testing technology including seals, castings, and plumbing systems. Each breaker is factory tested using Grid Solutions at GE Vernova’s proprietary gas tightness testing system which provides measurable, quantifiable test results on the breaker in its fully assembled, as-shipped condition.

Quality

Grid Solutions at GE Vernova designs, manufactures, tests and delivers its circuit breakers in accordance with the latest IEEE/ANSI and IEC standards, maintaining a quality assurance system according to ISO-9011 and ISO-14001 certifications. The center of excellence for dead tank circuit breakers is located in Charleroi, PA.

Installation and Maintenance

The DT1-145R is factory tested and adjusted and don’t require any special tools for installation. Designed with the smallest symmetrical footprint to allow for minimized foundation costs, they are recognized worldwide as easy-to-install and operate circuit breakers. Thanks to the low energy mechanism and lifetime lubricants, the DT series is virtually maintenance free.

The DT1 series on-site installation requires only a few simple steps. For installations where truck shipment is impossible, all DT series circuit breakers can be readied for standard container shipment with only their bushings disassembled.

Pre-insertion Resistors (PIRs)

The circuit breaker random switching can generate voltage disturbances on electrical lines. Placed in parallel of the main contacts of a circuit breaker, a pre-insertion resistor is a technique consisting in operating the circuit-breaker while briefly inserting a resistor during closing operation to reduce overvoltage phenomena such as switching transient voltage. This helps limit the power quality issues and accelerated aging, thus minimizing risks and operation costs. Integral PIRs may be used for switching of lines, transformers, shunt capacitors or shunt reactors.

Ratings

IEEE/ANSIIECValueUnits
Rated maximum voltage*Rated voltage72.5/123/145kV
Rated power frequencyRated frequency50/60Hz
Rated dielectric withstand capability:
- dry withstand
- wet withstand
Rated insulation level
- at power frequency, dry
- at power frequency, wet

160/260/310/365
140/230/275/315

kV
kV
Rated lightning impulse withstand voltage- at lightning impulse350/550/650/750kV
Rated chopped wave impulse voltage 2us 452/710/838/968kV
Rated continuous currentRated normal current1,200/2,000/3,000A
Rated short-circuit currentRated short-circuit breaking current40kA
Rated short-time current (1s) 63kA
Rated peak withstand current 164kA
Rated capacitance switching* Class C2 
Rated interrupting time 3cycles
 Rated break time50ms
Rated standard operating dutyRated operating sequence O-CO-15s-CO
O-0.3s-CO-180s-CO
*Standard values: further data is available on request.
**Please contact Grid Solutions for special purpose, high TRV, high X/R or other ratings requirements.

Dimensions

Rated Max. VoltageA (in/mm)B (in/mm)C (in/mm)D (in/mm)E (in/mm)F (in/mm)G (in/mm)H (in/mm)I (in/mm)J (in/mm)
72.5 kV79/199663/1597105/2676143/362455/1393149/377771/1793112/2857189/480648/1215
145 kV84/214569/1752129/3279166/422855/1393149/378571/1793111/2819189/480648/1215
Weight

(without current transformers)

72.5 kV:5,658/2572lb/kg
145 kV:6,170/2,798lb/kg
Leading Breaker with 63 kA Short-Circuit Current

The DT1-145 63 rated for 63 kA represents the latest dead tank circuit breaker technology. This circuit breaker is specifically designed and tested for general or definite purpose applications as well as for severe environmental conditions including low temperature, highly active seismic areas and regions with high pollution levels or corrosive atmospheres.

DT1-145 63

Dead Tank Circuit Breaker for 145 kV/63 kA
Leading Breaker with 63 kA Short-Circuit Current

The DT1-145 63 rated for 63 kA represents the latest dead tank circuit breaker technology. This circuit breaker is specifically designed and tested for general or definite purpose applications as well as for severe environmental conditions including low temperature, highly active seismic areas and regions with high pollution levels or corrosive atmospheres.

Learn about GE Vernova’s advantages in dead tank circuit breaker technology

Gas Tightness Guarantee

GE Vernova leads the industry in SF6 gas tightness testing technology including seals, castings, and plumbing systems. Each breaker is factory tested using GE Vernova’s proprietary gas tightness testing system which provides measurable, quantifiable test results on the breaker in its fully assembled, as-shipped condition.

Quality

GE Vernova designs, manufactures, tests and delivers its circuit breakers in accordance with the latest IEEE/ANSI and IEC standards, maintaining a quality assurance system according to ISO-9011 and ISO-14001 certifications. The center of excellence for dead tank circuit breakers is located in Charleroi, PA.

Installation and Maintenance

The DT1-145 63 is factory tested and adjusted and don not require an y “special tools” for installation. Designed with the smallest symmetrical footprint to allow for minimized foundation costs, they are recognized worldwide as easy-to-install and operate circuit breakers. Thanks to the low energy mechanism and lifetime lubricants, the DT series is virtually maintenance free.

The DT1 series on-site installation requires only a few simple steps. For installations where truck shipment is impossible, all DT series circuit breakers can be readied for standard container shipment with only their bushings disassembled.

Specifications

IEEE/ANSIIECValueUnits
Rated maximum voltageRated voltage145kV
Rated power frequencyRated frequency50/60Hz

Rated dielectric withstand capability:

  • dry withstand
  • wet withstand

Rated insulation level

  • at power frequency,dry
  • at power frequency,wet

 

310
275

 

kV
kV

Rated lightning impulse withstand voltage
  • at lightning impulse
650kV
Rated chopped wave impulse voltage 2us 838kV
Rated continuous currentRated normal current3,000A
Rated short-circuit currentRated short-circuit breaking current63kA
Rated closing,latching and short time carrying 164kA
Rated capacitance switching*   
 Rated single capacitor bank breaking current400A
Rated interrupting time 3cycles
 Rated break time50ms
Rated standard operating dutyRated operating sequence O-CO-15s-CO
O-0.3s-CO-180s-CO
*Rating available upoon request

Drawings

DT1-145 63 dimensions
State-of-the-Art Technology

The DT1-145 and the DT1-170 are dead tank circuit breakers suitable for application at 170 kV and below. They are specifically designed and tested for general or definite purpose applications as well as for severe environmental conditions including low temperature, highly active seismic areas and regions with high pollution levels or corrosive atmospheres.

DT1-145 and DT1-170

Dead Tank Circuit Breaker for 123 kV to 170 kV
State-of-the-Art Technology

The DT1-145 and the DT1-170 are dead tank circuit breakers suitable for application at 170 kV and below. They are specifically designed and tested for general or definite purpose applications as well as for severe environmental conditions including low temperature, highly active seismic areas and regions with high pollution levels or corrosive atmospheres.

Learn about GE Vernova’s advantages in dead tank circuit breaker technology

Gas Tightness Guarantee

GE Vernova leads the industry in SF₆ gas tightness testing technology including seals, castings, and plumbing systems. Each breaker is factory tested using GE Vernova’s proprietary gas tightness testing system which provides measurable, quantifiable test results on the breaker in its fully assembled, as-shipped condition.

Quality

GE Vernova designs, manufactures, tests and delivers its circuit breakers in accordance with the latest IEEE/ANSI and IEC standards, maintaining a quality assurance system according to ISO-9011 and ISO-14001 certifications. The center of excellence for dead tank circuit breakers is located in Charleroi, PA.

Installation and Maintenance

The DT1-145/170 are factory tested and adjusted and don not require an y “special tools” for installation. Designed with the smallest symmetrical footprint to allow for minimized foundation costs, they are recognized worldwide as easy-to-install and operate circuit breakers. Thanks to the low energy mechanism and lifetime lubricants, the DT series is virtually maintenance free.

The DT1 series on-site installation requires only a few simple steps. For installations where truck shipment is impossible, all DT series circuit breakers can be readied for standard container shipment with only their bushings disassembled.

Specifications

IEEE/ANSIIECValueUnits
Rated maximum voltageRated voltage123/145/170kV
Rated power frequencyRated frequency50/60Hz

Rated dielectric withstand capability:

  • dry withstand
  • wet withstand

Rated insulation level

  • at power frequency,dry
  • at power frequency,wet

 

260/310/365
230/275/315

 

kV
kV

Rated lightning impulse withstand voltage
  • at lightning impulse
550/650/750kV
Rated chopped wave impulse voltage 2us 710/838/968kV
Rated continuous currentRated normal current1,200/2,000/3,000A
Rated short-circuit currentRated short-circuit breaking current40kA
Rated closing,latching and short time carrying current 104kA
Rated capacitance switching*   
 Rated single capacitor bank breaking current400A
Rated interrupting time 3cycles
 Rated break time50ms
Rated standard operating dutyRated operating sequence O-CO-15s-CO
O-0.3s-CO-180s-CO
*Standard values: further data is available on request.

**Please contact Grid Solutions for special purpose, high TRV, high X/R or other ratings requirements.

Drawings

DT1-145-170
State-of-the-Art Technology

GE Vernova's DT series of dead tank circuit breakers are known for their advanced self-blast interrupters, leak resistant cast aluminum enclosures and durable low energy spring operated mechanisms. More than 100,000 GE Vernova circuit breakers with self-blast interrupters and FK spring-operated mechanisms have been in service since 1989.

DT1-72.5

Dead Tank Circuit Breaker for 72.5 kV
State-of-the-Art Technology

GE Vernova's DT series of dead tank circuit breakers are known for their advanced self-blast interrupters, leak resistant cast aluminum enclosures and durable low energy spring operated mechanisms. More than 100,000 GE Vernova circuit breakers with self-blast interrupters and FK spring-operated mechanisms have been in service since 1989.

Learn about GE Vernova’s advantages in dead tank circuit breaker technology

Performance

Thanks to its robust design, the DT1-72.5 is a highly reliable circuit breaker even under the most severe operating conditions and is tested to meet or exceed IEEE/ANSI and IEC as C2 class for capacitance switching including back-to-back (low restrike probability) and reactor switching applications. Extensive mechanical operation design testing ensures trouble-free operation for the lifetime of the circuit breaker. Intensive production leak testing ensures superior in-service SF6 performance.

Certified Quality

GE Vernova designs, manufactures, tests and delivers its circuit breakers in accordance with IEEE/ANSI and IEC standards, maintaining a quality assurance system according to ISO-9001 and ISO-14001. The competence center for dead tank circuit breakers is located in Charleroi, PA, USA.

 

Specifications

IEEE/ANSIIECValueUnits
Rated maximum voltageRated voltage72.5kV
Rated power freouencyRated frequency50/60Hz

Rated dielectric withstand capability:

  • dry withstand
  • wet withstand

Rated insulation level

  • at power frequency,dry
  • at power frequency,wet

 

160
140

 

kV
kV

Rated lightning impulse withstand voltage
  • at lightning impulse
350kV
Rated chopped wave impulse voltage 2us/3us 452/402kV
Rated continuous currentRated normal current1,200/2,000/3,000A
Rated short-circuit currentRated short-circuit breaking current40kA
Rated closing,latching and short time carrying current 108kA
 Rated short-circuit making current100kA
Rated capacitance switching 630A
 Rated single capacitor bank breaking current1,200A
Rated interrupting time 3cycles
 Rated break time50ms
Rated standard operating dutyRated operating sequence O-CO-15s-CO
O-0.3s-CO-180s-CO
*Standard values: further data is available on request.
**Please contact Grid Solutions for special purpose, high TRV, high X/R or other ratings requirements.

Drawings

DT1-72.5
State-of-the-Art Technology

GE Vernova's DT series of dead tank circuit breakers are known for their advanced self-blast interrupters, leak resistant cast aluminum enclosures and durable low energy spring operated mechanisms. More than 100,000 GE Vernova circuit breakers with self-blast interrupters and FK spring-operated mechanisms have been in service since 1989.

DT1-38

Dead Tank Circuit Breaker for 38 kV
State-of-the-Art Technology

GE Vernova's DT series of dead tank circuit breakers are known for their advanced self-blast interrupters, leak resistant cast aluminum enclosures and durable low energy spring operated mechanisms. More than 100,000 GE Vernova circuit breakers with self-blast interrupters and FK spring-operated mechanisms have been in service since 1989.

GE Vernova Advantage

Performance

Thanks to its robust design, the DT1-38 is a highly reliable circuit breaker even under the most severe operating conditions and is tested to meet or exceed IEEE/ANSI and IEC as C2 class for capacitance switching including back-to-back (low restrike probability) and reactor switching applications. Extensive mechanical operation design testing ensures trouble-free operation for the lifetime of the circuit breaker. Intensive production leak testing ensures superior in-service SF₆ performance.

Quality components play a key role in the high performance of the unit. DT1-38 components include:

  • Third-generation self-blast interrupter chamber
  • Pressure relief system for passive protection of both substation and personnel
  • Generous space for current transformers
  • Field-proven, temperature-compensated density monitor with two-stage pressure switch and three-color dial
  • DILO SF₆ filling connection
  • Galvanized steel base frame
  • Reliable spring-spring-operated mechanism
Certified Quality

GE Vernova designs, manufactures, tests and delivers its circuit breakers in accordance with IEEE/ANSI and IEC standards, maintaining a quality assurance system according to ISO-9001 and ISO-14001. The competence center for dead tank circuit breakers is located in Charleroi, PA (USA).

Specifications

IEEE/ANSIIECValueUnits
Rated maximum valtageRated voltage38kV
Rated power frequencyRated frequency50/60Hz

Rated dielectric withstand capability:

  • dry withstand
  • wet withstand

Rated insulation level

  • at power frequency,dry
  • at power frequency,wet

 

80
75

 

kV
kV

Rated lightning impulse withstand voltage
  • at lightning impulse
200*kV
Rated chopped wave impulse voltage 2us 258kV
Rated continuous currentRated normal current1,200/2,000/3,000A
Rated short-circuit currentRated short-circuit breaking current40kA
Rated closing,latching and short time carrying current 104kA
 Rated short-circuit making current100kA
Rated capacitance switching 630A
 Rated single capacitor bank breaking current1,200A
Rated interrupting time 3cycles
 Rated break time50ms
Rated standard operating dutyRated operating sequence O-CO-15s-CO
O-0.3s-CO-180s-CO
*Standard values: further data is available on request.
**Please contact Grid Solutions for special purpose, high TRV, high X/R or other ratings requirements.

Drawings

DT1-38