11kV Outdoor LV and MV VCB Panels

Headquartered in China, Huajidian is deeply committed to the R&D and manufacturing of 11kV Outdoor LV and MV VCB Panels. The company is equipped with an in-house technical team, modern production workshops, and a complete suite of testing equipment. Our proprietary, standardized factory ensures full-process quality control—implementing rigorous, multi-stage inspections from sheet metal fabrication through to the final product's dispatch—ensuring that all products successfully pass comprehensive Type Testing certifications. In addition to standard models, we offer customized cabinet solutions, on-site surveys, and field installation and commissioning services, providing a one-stop solution to meet the diverse power distribution project requirements of clients both domestically and internationally.

Core Technical Parameters

Product Structure and Performance Features

The 11kV Outdoor LV and MV VCB Panels are constructed using high-quality cold-rolled steel sheets, precision-processed via CNC technology and assembled using bolted connections. The resulting structure is compact and robust, featuring a neatly organized layout for the instrumentation, operation, and functional zones.

1. Four Independent Compartments: The cabinet is partitioned into four distinct compartments—the busbar compartment, circuit breaker compartment, cable compartment, and instrumentation/control compartment. These sections are completely isolated by metal partitions and integrated with pressure-relief channels; in the event of a fault, the system automatically releases pressure to prevent the propagation of electrical arcs.

2. Withdrawable (Trolley-Type) Circuit Breaker

The core vacuum circuit breaker is mounted on a withdrawable trolley mechanism, allowing it to be easily inserted or extracted. This design facilitates replacement and maintenance without requiring a complete power shutdown of the entire cabinet. The unit comes standard with a "Five-Prevention" mechanical interlocking system, utilizing hardware-based safeguards to effectively eliminate the risk of operational errors.

3. Front-Mounted Intelligent Monitoring Panel

The front face of the cabinet integrates instrumentation, indicator lights, and control buttons. This interface enables real-time monitoring of voltage, current, and power parameters, while intuitively displaying the status of circuit opening/closing, energy storage, and grounding, thereby facilitating convenient operation, maintenance, and routine inspections.

4. Optimized Side-Panel Heat Dissipation Structure

Multiple ventilation ducts are integrated into the cabinet's side panels to accelerate air convection and heat dissipation. This prevents component aging caused by high temperatures, ensuring the equipment can operate continuously at full load over the long term.

5. Modular and Flexible Configuration

Units—including incoming line cabinets, outgoing line cabinets, PT cabinets, metering cabinets, and bus-tie cabinets—can be assembled according to specific requirements, facilitating convenient expansion and retrofitting during project implementation.

Core Product Advantages

1. Triple-Layer Protection: Features a fully enclosed armored cabinet structure, a "Five-Prevention" interlocking mechanism, and pressure-relief devices to effectively mitigate power distribution safety hazards.

2. Premium Components: Utilizes carefully selected, high-quality components that undergo comprehensive testing prior to shipment, ensuring durability in harsh operating environments and a low failure rate.

3. Draw-out Trolley Mechanism: Features a withdrawable trolley structure that enables rapid maintenance and component replacement, significantly reducing power outage durations.

4. Integrated Protection and Control: Compatible with relay protection and measurement/control devices, allowing for seamless integration with power monitoring systems to enable intelligent remote management and control.

5. Quality Assurance: The entire production process strictly adheres to national standards and has successfully passed rigorous type testing, guaranteeing full compliance and product quality.

Real-World Application Cases

Case 1: Power Distribution Support Project for a 50MW Centralized PV Power Plant in Northwest China

The power distribution room supporting this project was equipped with 22 Huajidian cabinets, comprising units for incoming lines, outgoing lines, metering, and bus-ties, responsible for the grid-connection and power transformation of the PV plant. The equipment has operated stably for 24 consecutive months; its "Five-Prevention" interlocking structure and short-circuit protection mechanisms successfully passed random inspections conducted by the power grid authority, thereby ensuring the stable power generation of the plant.

Case 2: Power Distribution Retrofit for a Large Commercial Complex in Southeast Asia

This project involved the retrofitting of aging power distribution cabinets within a 180,000 m² commercial complex, utilizing 36 units of 11kV outdoor LV and MV VCB panels. Leveraging the system's modular design, installation and commissioning were completed within just 12 days, eliminating the need for a prolonged, facility-wide power shutdown. Furthermore, the system was integrated into the property's intelligent power distribution network, enabling remote monitoring of electricity consumption throughout the entire building and significantly reducing manual inspection costs.

Applicable Scenarios

1. Power Grid Projects: Construction of new substations and distribution stations, as well as the modernization of aging power grids;

2. Industrial Projects: Power distribution for workshops in metallurgy, mining, chemical, and other industrial sectors;

3. Public Infrastructure: Airports, rail transit systems, hospitals, educational institutions, and large-scale commercial real estate developments;

4. New Energy: Ancillary power distribution systems for photovoltaic power stations, wind farms, and energy storage projects.

After-Sales Service

1. Warranty Coverage: During the warranty period, faulty components are replaced free of charge, and on-site inspection and repair services are provided;

2. Technical Support: Free technical guidance, installation and commissioning assistance, and hands-on operational training for maintenance personnel;

3. 24/7 Technical Support: Round-the-clock technical liaison services with rapid response to fault-related inquiries and issues;

4. Lifetime Maintenance: Comprehensive maintenance services for the product's entire lifespan; after the warranty expires, only the cost of replacement parts and a basic service fee are charged.

FAQ

Q1: For non-standard projects, can Huajidian customize 11kV Outdoor LV and MV VCB Panels with non-standard dimensions or specific technical parameters?

A1: Yes. In addition to our standard product range, we support customization of cabinet dimensions, rated currents, and secondary control logic. Our technical team can conduct on-site surveys of the operating environment to develop tailored design solutions.

Q2: The product's standard specifications apply to altitudes of ≤1000 meters; can these units be adapted for use in high-altitude or plateau environments?

A2: Our standard models are suitable for altitudes up to 1000 meters. For high-altitude projects, we offer customized upgrades to the insulation and heat dissipation systems, along with optimized component selection, to ensure reliable operation under plateau conditions.

Q3: Is it necessary to de-energize the entire cabinet when performing maintenance on or replacing a withdrawable circuit breaker?

A3: No. The circuit breaker can be individually withdrawn for maintenance while the busbars remain energized, allowing the remaining circuits to continue supplying power normally. This minimizes power outage losses for the user.