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Hairui LW36-126 110kV SF6 Gas Circuit Breaker Supplier

The SF6 gas circuit breaker outdoor high voltage LW36-126 uses SF6 gas as both the insulating and arc-extinguishing medium, the is suitable for utility substations, power-plant switchyards, renewable-energy grid connections, transformer bays, industrial power systems, and transmission-network expansion projects.

Why Choose Hairui 110kv SF6 Gas Circuit Breaker

  • Engineering Review Before Manufacturing: Our team reviews the single-line diagram, fault level, insulation coordination, operating sequence, station DC supply, and installation environment before confirming the breaker configuration.
  • Interface Coordination: Terminal orientation, conductor loads, foundation arrangement, control cabinet interfaces, auxiliary contacts, and cable-entry requirements can be coordinated with the substation design.
  • IEC-Oriented Technical Support: For international projects, the product and documentation can be prepared around applicable IEC requirements, including project-specific schedules and inspection requirements.
  • Controlled Production and Inspection: Manufacturing and inspection are performed against the approved configuration. Key operating, control, sealing, and assembly requirements are checked before shipment.
  • Documentation for EPC Execution: Hairui Electric can support SF6 Gas Circuit Breaker produce document-submittal workflows with drawings, datasheets, wiring information, packing lists, recommended spare parts, and installation guidance.
  • Lifecycle Assistance: Technical communication continues after delivery, with support for installation checks, commissioning preparation, operational questions, maintenance, and replacement parts.
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Hairui Electric

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For decades, Hairui has been dedicated to helping numerous well-known enterprises and institutions customize reliable equipment. With strong production capabilities and professional expertise, we ensure that our equipment is fully compliant and meets your requirements.

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Our Advantage

  1. Self-Energy Arc-Extinguishing Technology: The 110kV SF6 Gas Circuit Breaker uses arc energy to support the gas flow required for interruption. This helps reduce the mechanical energy demand on the operating mechanism and supports efficient fault-current breaking.
  2. Protection for Critical 110kV Equipment: The breaker can isolate faults affecting transmission lines, power transformers, busbars, and high-voltage feeders, helping protect valuable substation assets.
  3. Strong Insulation Performance: SF6 insulation provides high dielectric strength across the interrupting chamber and supports dependable operation at the insulation levels required by 110kV networks.
  4. Low Mechanical Operating Demand: The self-energy design and spring mechanism reduce unnecessary mechanical stress, supporting stable opening and closing characteristics over repeated operations.
  5. Compact Outdoor Arrangement: The live-tank structure offers an efficient substation footprint and can be integrated into new or existing outdoor switchyards.
  6. Configurable for Site Conditions: Insulator creepage distance, control system, terminal layout, support structure, and environmental design can be reviewed for polluted, high-altitude, cold-climate, coastal, or seismic locations.
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Start Your Power Engineering Project

Our technical consultants offer 24/7 online consultation to assist you through the entire process, from drawing design and equipment selection to installation guidance.

Is the LW36-126 intended for 110kV or 126kV systems?

It is normally applied in nominal 110kV networks. The 126kV designation represents the rated or highest equipment voltage of the circuit breaker.

What is a self-energy SF6 circuit breaker?

A self-energy breaker uses thermal and pressure energy generated during interruption to assist the SF6 gas flow that extinguishes the arc. This reduces the amount of energy required from the operating mechanism.

What equipment can the LW36-126 protect?

It can be used to protect transmission lines, power transformers, busbars, incoming feeders, outgoing feeders, and other equipment within a suitably designed 110kV substation.

Can the breaker perform automatic reclosing?

Automatic reclosing capability depends on the rated operating sequence, mechanism, control system, protection relay, and project requirements. The required reclosing cycle must be included in the inquiry.

How is SF6 gas condition supervised?

A density-monitoring device normally provides indication and staged alarm or lockout contacts. Final alarm settings and control logic are confirmed for the selected design.

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