Download the app
  • 31.5kV indoor railways vacuum circuit breaker
31.5kV indoor railways vacuum circuit breaker
discuss personally
Model
GSR+-31.5-2500
Basic info Product Detail Supplier
Basic info
Brand ABB
Model NO. 31.5kV indoor railways vacuum circuit breaker
Rated voltage 31.5kV
Rated normal current 2500A
Rated frequency 50/60Hz
Series GSR+
Product Detail

Description：

Medium Voltage single-phase circuit breaker with magnetic actuator, designed for railway power supply up to 27.5 kV, 2500 A, 31.5 kA

With a rated voltage of 31.5kV, it can effectively handle the electrical loads in railway applications. Equipped with brushless servomotors (one per phase) and double encoders, it enables precise control over switching operations. Each phase also has an electronic controller that communicates hierarchically, ensuring coordinated and reliable system operation. This breaker is designed to safeguard the railway electrical network from overloads and short - circuits, ensuring stable and safe power supply for trains and related facilities.

The GSR+ II range is the first commercially available single-phase vacuum circuit breaker for railway power supply applications to feature a vacuum interrupter, magnetic actuator and electronic controller. This solution is robust, reliable and essentially maintenance-free. 

Feature：

  • High Voltage Adaptability and Stable Insulation: With a rated voltage of 31.5kV, it is suitable for high-voltage environments in railway power systems. The three-pole structure encapsulated in epoxy resin, with built-in vacuum interrupters, offers excellent insulation performance and can withstand harsh environmental factors such as moisture and dust.
  • Precision Control Operation: Each phase is equipped with a brushless servo motor and dual encoders to achieve high-precision control of switching operations. It can quickly and stably respond to the on/off demands of the power system, ensuring the timeliness of power supply.
  • Intelligent Collaborative Operation: The electronic controllers of each phase have hierarchical communication functions, enabling mutual collaboration and linkage with the main control unit. This ensures that the circuit breaker can coordinate consistently and operate stably and reliably under complex working conditions.
  • Efficient Fault Protection: It has the ability to quickly cut off overloads, short circuits, and other faults, effectively protecting the railway electrical network. This avoids the impact of power faults on train operation safety and ensures the stability of the railway power supply system.
  • Compact Indoor Design: Optimized for indoor installation, its compact structure saves space, adapts to the limited installation environments in railway substations and control rooms, and facilitates integration and maintenance.

 Technical Characteristics:

 

Know your supplier
ABB
As an authorized distributor of ABB products, we take great pride in our partnership.
Main Categories
High voltage/Low voltage
Business Type
Sales
Highest Annual Export (USD)
$580000000
Professional Experience
11 years
Workplace
20000m²
占位
占位
FAQ
Q： What are the differences between indoor vacuum circuit breakers and SF₆ circuit breakers?
A： Arc-quenching medium: Vacuum circuit breakers use vacuum for arc quenching (environmentally friendly, no greenhouse gases), while SF₆ circuit breakers use SF₆ gas (requiring attention to gas leakage and environmental treatment). Volume and maintenance: Vacuum circuit breakers are smaller in size and have a longer maintenance cycle (the maintenance-free cycle can reach 10 years); SF₆ circuit breakers require regular detection of gas pressure.
Q： What are the precautions for installing indoor vacuum circuit breakers?
A： Ensure the installation environment is dry, free of corrosive gases, and well-ventilated (meeting the IP4X protection class requirements). Check that the dimensions of the switchgear cabinet match those of the circuit breaker (e.g., withdrawable types need to be compatible with the switchgear rails), and fasten the connection terminals securely to prevent loosening and overheating. The insulation distance of the primary circuit must meet the standards (e.g., for 12kV products, the phase-to-phase and phase-to-ground clearances shall be ≥125mm).
Related Products
More
Related Knowledges
More
Failure Analysis and Design Optimization of Conventional Grounding Transformers
Failure Analysis and Design Optimization of Conventional Grounding Transformers
I. Core Cause of Damage: Electrodynamic Impact (Complying with GB/T 1094.5 / IEC 60076-5)The direct cause of high-voltage winding end collapse is the instantaneous electrodynamic impact induced by short-circuit current. When a single-phase grounding fault occurs in the system (such as lightning overvoltage, insulation breakdown, etc.), the grounding transformer, as the fault current path, withstands high-amplitude and steep-rise-rate short-circuit currents. According to Ampère's force law
Felix Spark
06/12/2025
Analysis of Grounding Transformer Operational Behavior Under System Single-Phase-to-Ground Fault Conditions
Analysis of Grounding Transformer Operational Behavior Under System Single-Phase-to-Ground Fault Conditions
1 Theoretical AnalysisIn distribution networks, grounding transformers serve two key roles: powering low - voltage loads and connecting arc - suppression coils at neutrals for grounding protection. Grounding faults, the most common distribution network fault, heavily impact transformers’ operating characteristics, causing sharp changes in electromagnetic parameters and status.To study transformers’ dynamic behaviors under single - phase grounding faults, build this model: Assume a tr
Felix Spark
06/12/2025
Design Calculations for Neutral Grounding Schemes and Grounding Transformer Sizing in Utility-Scale Solar PV Plants
Design Calculations for Neutral Grounding Schemes and Grounding Transformer Sizing in Utility-Scale Solar PV Plants
1 Classification of Neutral Grounding Methods for Solar Photovoltaic Power StationsInfluenced by differences in voltage levels and grid structures across regions, the neutral grounding methods of power systems are mainly categorized into non-effective grounding and effective grounding. Non-effective grounding includes neutral grounding via arc suppression coils and neutral ungrounded systems, while effective grounding comprises neutral solid grounding and neutral grounding via resistors. The sel
Dyson
06/12/2025
Zero-Sequence Impedance Characterization of Dry-Type Grounding Transformer with ZN Connection
Zero-Sequence Impedance Characterization of Dry-Type Grounding Transformer with ZN Connection
In a neutral-insulated three-phase power system, an earthing transformer provides an artificial neutral point, which can be solidly earthed or earthed via reactors/arc suppression coils. The ZNyn11 connection is typical, where zero-sequence magnetomotive forces in the inner/outer half-windings of the same core column cancel out, balancing fault currents in series windings and minimizing zero-sequence leakage flux/impedance.Zero-sequence impedance is critical: it determines fault current magnitud
Dyson
06/12/2025
Case Analysis on Maloperation of Grounding Transformer Overcurrent Protection Relay
Case Analysis on Maloperation of Grounding Transformer Overcurrent Protection Relay
The neutral grounding mode refers to the connection between the power system neutral point and ground. In China's 35 kV and below systems, common methods include ungrounded neutral, arc-suppression coil grounding, and small-resistance grounding. The ungrounded mode is widely used as it allows short-term operation during single-phase grounding faults, while small-resistance grounding has become mainstream for its fast fault removal and overvoltage limitation. Many substations install grounding tr
Felix Spark
06/12/2025
Discussion on the Design of Low Zero-Sequence Impedance Grounding Transformers
Discussion on the Design of Low Zero-Sequence Impedance Grounding Transformers
With the expansion of power system scale and the cableization process of urban power grids, the capacitive current in 6kV/10kV/35kV power grids has significantly increased (generally exceeding 10A). As power grids at this voltage level mostly adopt neutral ungrounded operation mode, and the distribution voltage side of main transformers is usually in delta connection, lacking a natural grounding point, the arc during ground faults cannot be reliably extinguished, necessitating the introduction o
Dyson
06/11/2025
×
Inquiry
Download
Experts Electrical is dedicated to serving the personnel in the global power industry.
Join Experts Electrical, not only can you discover power equipment and power knowledge, but also canhnd like - minded friends!
App Store App Store App Store App Store App Store App Store App Store App Store
App Store
商品视频播放