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FBARB Outdoor Box-Type Switchgear Station

FBARB Outdoor Box-Type Switchgear Station

AREVA FBARB is a fully prefabricated, outdoor, environmentally friendly gas-insulated switchgear designed for 12 kV urban distribution networks, renewable energy applications, and municipal projects. It incorporates the proven FBAIR eco‑friendly gas‑insulated switchgear units and integrates incoming feeders, ring main units, outgoing circuits, metering, and protection functions into a single compact assembly. The equipment is pre‑assembled and tested at the factory, requiring only foundation installation and cable connections on site before commissioning. Compliant with GB/T 3906 and IEC 62271 series standards, it replaces traditional civil‑engineering substations, significantly reducing the footprint while delivering robust performance in demanding outdoor conditions. It serves as a standardized outdoor distribution solution for urban cable‑based upgrades, photovoltaic and wind power integration, industrial park power distribution, and street lighting systems.

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FBARB Outdoor Box-Type Switchgear Station

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Product Details

AREVA FBARB is designed for 12kV urban distribution networks, new energy applications, and municipal engineering projects. Fully Prefabricated Outdoor Environmental‑Friendly Gas‑Insulated Switchgear Cabinet It features a mature FBAIR environmentally friendly gas-insulated switchgear unit, integrating incoming line, ring‑main, outgoing line, metering, and protection modules into a single compact assembly. The entire unit is pre‑assembled and fully commissioned at the factory, requiring only basic on‑site installation and cable connections for immediate commissioning. Compliant with GB/T 3906 and IEC 62271 series standards, this product replaces traditional civil‑engineering substations, significantly reducing the footprint while adapting to demanding outdoor conditions. It serves as a standardized outdoor distribution core device for urban cable‑based grid upgrades, photovoltaic and wind power integration, industrial park distribution, and road lighting applications.

Core Architecture and System Components

Outdoor Anti-Corrosion Enclosure System

The enclosure is fabricated from thickened aluminum‑zinc coated steel sheets using CNC bending, featuring a double‑layer thermal insulation structure and both interior and exterior weather‑resistant, anti‑corrosion coatings. The unit achieves an overall protection rating of IP33 and comprises separate high‑voltage switchgear compartments, cable rooms, and secondary instrument rooms, with metal partitions between each compartment and built‑in pressure‑relief explosion‑proof vents. Standard equipment includes dual‑circuit anti‑condensation heaters, making it suitable for outdoor environments characterized by extreme temperatures, high humidity, and significant diurnal temperature variations. A multi‑door configuration allows maintenance access from the front, rear, and sides, providing ample operating space.

FBAIR Environmental Gas-Insulated Main Switchgear Unit

Internally, it employs an SF6‑free, environmentally friendly gas‑insulated module, featuring a three‑position load switch/vacuum circuit breaker in a modular configuration. Optional configurations include ring‑main units, circuit‑breaker protection units, PT metering units, and grounding units. The gas compartment exhibits an extremely low annual leakage rate, eliminating the need for gas replenishment throughout its entire service life. It supports both spring‑operated manual and electric actuation mechanisms, offering long mechanical life and stable make‑and‑break performance.

Intelligent Secondary Surveillance System

Equipped with a MACOM smart measurement and control device, it integrates voltage and current acquisition, fault indication, live‑line display, and remote switch‑on/off functions. It supports MODBUS, IEC 60870‑104, and IEC 61850 communication protocols, enabling seamless integration with the distribution automation master station. The local panel features single‑line diagram display, fault waveform recording, event logging, and audible/visual alarms, and supports both local and remote operation modes.

Comprehensive safety interlock system

Full‑set five‑protection mechanical interlocks: prevent load‑carrying opening and closing, closing with the earthing switch engaged, closing the earthing switch under voltage, unauthorized entry into energized compartments, and unintended opening or closing. The switchgear room door is mechanically interlocked with the main switch; the cable compartment door cannot be opened for maintenance when energized. Optional safety accessories include rapid grounding switches, surge arresters, zero‑sequence current transformers, and other components.

Core Product Advantages

1. Lightweight prefabrication significantly shortens the construction schedule.

The entire unit undergoes factory‑preinstalled wiring, dielectric withstand testing, and full‑range current‑carrying capability verification before leaving the factory; on site, only the concrete foundation and cable connections are required, reducing construction time by 70% compared to traditional civil‑engineering substations. The cabinet is delivered in separate components and assembled on site, can be lifted and relocated, and is well suited for temporary construction sites as well as expansion and retrofit projects.

2. Environmentally friendly with low maintenance, designed for long-lasting outdoor operation.

It employs environmentally friendly insulating gas with zero greenhouse gas emissions; the sealed gas chamber requires no open‑cover maintenance, and the enclosure is resistant to UV radiation, salt spray, and rainwater corrosion. Its corrosion‑resistant design makes it well suited for coastal areas and chemical industrial parks. Routine inspections are limited to annual visual checks and lubrication of moving parts, resulting in extremely low operation and maintenance costs.

3. Flexible modular configuration, compatible with diverse wiring options.

Modular units can be freely configured: with 2 to 8 circuits, they offer flexible scalability and support single-ring, double-ring, and radial feeder topologies. They can be customized to include circuit‑breaker protection, fuse combinations, voltage metering, and reactive‑power measurement modules, meeting the diverse distribution requirements of residential communities, photovoltaic systems, and municipal networks.

4. Reliable All-Weather Outdoor Protection

Operating environment: 25°C to +40°C; seismic resistance up to magnitude 8; compliant with an altitude of 1,000 m. A dual-chamber heater prevents condensation‑induced flashover, while a waterproof, rain‑water‑diverting structure at the base safeguards against ingress of rainwater and sediment. An internal, independent pressure‑relief compartment ensures that internal arc‑faults do not propagate to the exterior.

5. Fully Digital Distribution Adaptation

Standard configuration includes a distribution automation interface, supporting remote signaling, remote measurement, and remote control. Optional features such as rapid fault location, online temperature monitoring, and the CBMonitor circuit‑breaker diagnostic module enable unattended, intelligent operation and maintenance of the distribution network.

Key Technical Parameters

Rated voltage: 12 kV
Rated frequency: 50 Hz
Rated current: 630 A
Rated short-time withstand current: 20/25 kA (optional: 2 s / 4 s)
Rated peak withstand current: 50/63 kA
Insulation level: Power-frequency 42 kV/1 min, lightning impulse 95 kV
Enclosure protection rating: IP33, compartment IP2X
Operating mechanism: manual spring / electric spring energy storage
Communication protocols: MODBUS, IEC 104, IEC 61850
Switch / Operation Cycle: O-0.3s-CO-180s-CO

Typical application scenarios

Urban cable ring‑network upgrades, outdoor distribution in industrial and commercial parks, step‑up transformer systems for photovoltaic and wind power, packaged substations for residential communities, municipal road lighting, distribution along subway lines, temporary power supply at mining sites, outdoor switchgear in chemical parks, and replacement projects for aging distribution rooms.

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