I. Product Overview
The KYN28A-12 (Z) type armoured withdrawable AC metal-enclosed switchgear is a core power distribution device specially designed for three-phase AC 50Hz power systems. Its core function is to stably receive and reasonably distribute electrical energy, as well as achieve precise control, reliable protection and real-time monitoring throughout the circuit operation process, providing key support for the safe and efficient operation of the power system.
In terms of the system structure, its busbar system is based on a single busbar, and can also be flexibly extended to form a single busbar with bypass and double busbar structures, which can be adapted and adjusted according to the structural requirements of different power systems. In addition, this switchgear is equipped with a complete "five-prevention" interlocking function, which can effectively prevent the risk of misoperation. In terms of circuit breaker configuration, it has strong compatibility. It can be equipped with either domestic ZN63A (VS1) vacuum circuit breakers or ABB's VD4 vacuum circuit breakers. With its excellent performance, it has become a high-quality choice in the field of power distribution.
II. Product Performance Features
Structural Design Advantages: It adopts a fully metal armoured design, which provides excellent protection performance; at the same time, it uses an assembled structure with flexible combination schemes, allowing for personalized matching according to the needs of different power distribution scenarios.
High-Quality Materials and Exquisite Craftsmanship: The cabinet body is made of imported aluminum-zinc coated thin steel plates, which are lightweight and have strong corrosion resistance; it is precision-processed by CNC machine tools, combined with advanced multi-fold edge technology, ensuring high precision and high strength of the cabinet body; all components are connected by rivet nuts and bolts, with strong part universality, facilitating later maintenance and replacement.
High Compatibility and Maintenance-Free Performance: It can be flexibly equipped with domestic ZN63A-12 series or imported VD4 series vacuum circuit breakers, with a wide application range and high operational reliability. It can achieve long-term maintenance-free operation, greatly reducing operation and maintenance costs.
Safety Design of Trolley: The trolley is designed with two key positions: working position and test position. Each position is equipped with a precise positioning device and a clear display device, ensuring safe and reliable operation and avoiding faults caused by position confusion.
Trolley Interchangeability and Misoperation Prevention: Various types of trolleys adopt a modular design based on modules, which not only ensures that trolleys of the same specification can be freely interchanged to improve maintenance efficiency, but also effectively prevents trolleys of different specifications from entering by mistake, avoiding potential safety hazards from the design perspective.
Convenient Trolley Handling: The trolley is transported by a dedicated carrier vehicle, making the operation process lightweight and flexible, reducing the labor intensity of staff and improving the convenience of equipment operation.
Reliable Interlocking Protection: It is equipped with a highly reliable interlocking device, which fully meets the electrical "five-prevention" (preventing incorrect opening/closing of circuit breakers, preventing on-load opening/closing of disconnectors, preventing earthing switch closing with live parts, preventing closing with earthing switch closed, and preventing entry into live compartments) requirements, providing comprehensive protection for equipment operation and staff operation safety.
Safe Pressure Relief and Status Observation: Each high-voltage compartment is independently equipped with a pressure relief channel, which can quickly release pressure in the event of an internal fault to ensure personal safety; the front door of the cabinet is equipped with an observation window, allowing staff to observe the working status of internal components at any time, facilitating the timely detection and handling of abnormalities.
