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The KYN28A-12 is an advanced indoor switchgear designed for AC systems ranging from 3.6kV to 12kV at 50/60Hz. It is well-suited for applications in industries, mining, power plants, and substations, and it accommodates single bus configurations, which improve control, protection, and monitoring within medium voltage networks. Crucial for power transmission and distribution, it plays a vital role in electrical infrastructure.
The main components of KYN28A-12 armored withdrawable switchgear are listed as follows:
Cabinet FrameFabricated from aluminum-zinc coated steel sheets via CNC cutting and multi-fold bending, adopting full bolted assembly without welding joints, featuring high precision, structural rigidity and corrosion resistance.
Four Independent Isolated Compartments
Busbar Compartment: Install main and branch insulated busbars, equipped with top pressure relief channel for fault pressure release.
Circuit Breaker Trolley Compartment: Accommodates removable vacuum circuit breaker trolley (VS1/VD4), with test and working double positioning positions.
Cable Compartment: Arranges current transformers, earthing switches and incoming/outgoing cables, reserved with cable wiring space.
Instrument Control Compartment: Places secondary protection relays, meters and control operation devices, fully isolated from high-voltage live parts.
Vacuum Circuit Breaker TrolleyStandard withdrawable handcart unit with complete mechanical positioning and interlock structure, supporting quick replacement and maintenance.
Safety Interlock SystemFull five-prevention mechanical interlock device installed among circuit breaker, earthing switch and cabinet door to avoid all misoperation risks.
Auxiliary AccessoriesIncluding high-voltage insulating bushings, pressure relief baffle, temperature monitoring components, grounding device and locking mechanisms.
KYN28A-12 armored withdrawable switchgear serves as complete medium-voltage power distribution equipment for 12kV three-phase AC power grid.It realizes electric energy receiving, transmission and distribution through internal vacuum circuit breakers, busbars and auxiliary components. The independent compartment isolation design limits fault expansion; matched with vacuum arc-extinguishing circuit breakers, it completes circuit closing, opening and short-circuit protection functions. The withdrawable trolley structure separates live and maintenance status via mechanical interlocks to guarantee operation safety.
Safe isolated compartment designFour fully separated independent chambers block fault diffusion, each equipped with pressure relief device to protect equipment and operators under arc faults.
Convenient maintenance & strong interchangeabilityWithdrawable vacuum breaker trolley can be pulled out for inspection and replacement without power cut of the whole cabinet, high interchangeability of handcart components.
Foolproof five-prevention interlockComplete mechanical interlock system prevents live trolley pushing, mistaken closing/opening of breaker, live compartment access and misclosing of earthing switch.
Durable anti-corrosion cabinet bodyAluminum-zinc coated steel sheet frame delivers excellent rust and corrosion resistance, long service life for indoor long-term operation.
Compact modular layoutOptimized central-mounted trolley structure saves installation space, supports flexible combination of incoming, feeder, metering and PT cabinets.
Urban power grid & substationsPrimary and secondary distribution substations, municipal power transformation stations, prefabricated compact substations.
Power generation industryMedium and small generator outlet power distribution in thermal power, hydropower and new energy power plants.
Industrial & mining projectsFactory workshops, mining areas, chemical plants, large industrial park power receiving and distribution.
Commercial & public buildingsHigh-rise office buildings, shopping malls, hospitals, schools, subway stations and data center power supply systems.
| Product Name | KYN28A-12 Armored Withdrawable AC Metal-Enclosed Switchgear |
| Category | Medium Voltage Switchgear |
| Brand | Duanlu Electric |
| Manufacturer | Duanlu Electric Co., Ltd. |
| Place of Origin | Anhui, China |
| Certifications | ISO 9001, ISO 14001, CE, IEC compliant |
| Warranty | 12-24 months (extendable) |
| Customization | OEM/ODM available |
| MOQ | 1 unit (sample) / 5-10 units (bulk) |
Our KYN28A-12 Armored Withdrawable AC Metal-Enclosed Switchgear is widely used in:
A: All our products are certified with ISO 9001, ISO 14001, CE, and comply with IEC standards. We can also provide specific certifications required by your local market.
A: We provide a standard 12-month warranty from shipment date, with extended warranty up to 24 months. All products undergo strict pre-shipment testing.
A: Yes, we offer full OEM/ODM services including custom design, branding, and packaging. Our R&D team can develop products according to your technical specifications.
A: MOQ is typically 1 unit for samples and 5-10 units for bulk orders of standard Medium Voltage Switchgear. Custom designs may have different MOQ requirements.
A: Standard products: 15-25 days. Custom products: 30-45 days depending on specifications. We also keep stock for popular models for faster delivery.
A: We accept T/T (30% deposit, 70% balance before shipment), L/C at sight, and Western Union for samples. Other terms negotiable for long-term partners.
Our engineering team will respond within 24 hours with detailed pricing and technical specifications.
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✉️ Email: wangzw@126.com
