China KYN28A-12 Mid-Mounted Cabinet Suppliers - 10kV Armored Enclosed Switchgear Factory for Power Distribution
The product features a highly modular design. Key components such as the circuit breaker and isolation carriage are mounted on a removable cart, enabling flexible operation and easy maintenance through multiple positioning states including working, testing, isolation, and removal.
The cabinet is constructed from high-quality aluminum-zinc coated steel plates through multiple bending processes, forming a fully enclosed metal armor structure.
Modular Design
Key components including the circuit breaker and isolation carriage are mounted on a removable cart, supporting working, testing, isolation, and removal states.
Fully Enclosed Armor
Cabinet body is formed from high-quality aluminum-zinc coated steel plates through multiple bending processes, creating a robust fully enclosed metal armor structure.
Intelligent Protection
Optional integrated protection devices enable intelligent measurement and protection, meeting the demands of modern smart distribution networks.
The cabinet is divided into fully isolated compartments, ensuring operational safety and preventing fault escalation between zones:
- Busbar Room
- Circuit Breaker Cart Room
- Cable Room
- Instrument Relay Room
Comprehensive "Five-Prevention" Locking Mechanism
The mid-mounted cabinet features a full "five-prevention" interlocking system designed to prevent accidental or misoperation, significantly enhancing on-site operational safety and reducing human error risks.
| Parameter | Specification |
|---|---|
| Rated Current | 1250A – 3150A |
| Short-Circuit Breaking Capacity | 25kA – 40kA |
| Cabinet Structure | Fully Enclosed Metal Armor Modular |
| Protection Device | Optional Integrated Intelligent Protection Unit |
| Operation States | Working / Testing / Isolation / Removal |
| Safety Mechanism | Five-Prevention Interlocking System |
Designed in strict compliance with domestic and international standards:
- High Reliability — Robust construction ensures long-term stable operation in demanding environments.
- Compact Structure — Space-saving design suitable for modern substations and distribution rooms.
- User-Friendly Operation — Intuitive cart mechanism and clear positioning states simplify daily use.
- Safe Maintenance — Isolated compartments and five-prevention locking protect maintenance personnel.
The removable cart supports four distinct positioning states: working position, testing position, isolation position, and removal position. This design allows operators to perform maintenance and testing without fully removing the equipment, greatly improving operational flexibility and safety.
The mid-mounted cabinet typically supports a rated current range of 1250A to 3150A, making it suitable for a wide range of medium-voltage distribution applications in industrial, commercial, and utility environments.
The five-prevention (五防) interlocking mechanism is designed to prevent five types of misoperations: operating the circuit breaker under load, pulling or inserting the cart while the breaker is closed, grounding a live busbar, closing the breaker on a grounded circuit, and entering a live compartment. This system is a critical safety feature in modern switchgear.
This mid-mounted cabinet is designed and manufactured in strict compliance with both domestic GB (Guobiao) standards and international IEC (International Electrotechnical Commission) standards, ensuring global compatibility and meeting the requirements of international project specifications.
By separating the busbar room, circuit breaker cart room, cable room, and instrument relay room into independent enclosed compartments, any fault or arc event is contained within a single zone. This prevents fault escalation to other areas of the cabinet, protecting both personnel and adjacent equipment.
Yes. The mid-mounted cabinet supports optional integrated protection devices that enable intelligent measurement, monitoring, and protection functions. This makes it compatible with modern smart grid and digital substation requirements, supporting remote monitoring and automated fault response.