KYN28A-24 Type Armored Removable AC Metal-Enclosed Switchgear
Brand: Henan Mingkong
Model: KYN28A-24
Product Type: Indoor Armored Removable AC Metal-Enclosed Switchgear
Rated Voltage: 24kV
Core Feature: Three-compartment withdrawable design, IP4X protection, VS1/VN2 vacuum circuit breakers
Key Advantage: Easy maintenance, anti-misoperation interlocks, high short-circuit withstand strength
Application: Power plants, industrial substations, mining facilities, 24kV distribution networks
Conditions of Use: Altitude ≤ 1000m, ambient temperature -15°C to +40°C
Introduction
A : Product Overview
The KYN28A-24 armored removable AC metal-enclosed switchgear is a high-performance indoor power distribution solution engineered for 24kV three-phase 50/60Hz power systems. As a core component of medium-voltage distribution networks, it is widely deployed in power plants, industrial substations, mining facilities, high-rise commercial buildings, and large-scale manufacturing plants, where it serves to receive, distribute, and control electrical energy with exceptional safety, reliability, and operational flexibility.
Built with a fully armored, withdrawable modular structure, the KYN28A-24 features three independent, segregated compartments for the busbar, circuit breaker, and cable sections. This compartmentalized design significantly enhances operational safety by containing faults within isolated areas, while also simplifying routine maintenance and upgrades. The withdrawable circuit breaker handcart allows for quick removal, testing, or replacement without shutting down the entire system, minimizing downtime and improving overall grid reliability. Equipped with high-performance VS1 or VN2 series vacuum circuit breakers, the switchgear delivers outstanding arc-quenching capabilities, supporting rated currents from 630A up to 3150A and short-circuit breaking currents up to 31.5kA, making it suitable for heavy-duty industrial applications.
Safety is the cornerstone of the KYN28A-24’s design. The system incorporates comprehensive mechanical interlocks to prevent common misoperations, such as preventing the handcart from moving under load, blocking grounding switch closure while the circuit breaker is engaged, and preventing unauthorized access to live compartments. Its IP4X-rated enclosure (IP2X between compartments) provides robust protection against dust, debris, and accidental contact, while heat-shrinkable or epoxy-coated busbar insulation reduces the risk of flashovers and enhances long-term dielectric strength. The secondary control circuit is equipped with advanced protection and monitoring components, ensuring stable performance even under varying load conditions.
Designed for durability and adaptability, the KYN28A-24 is built to withstand harsh operating environments, with an ambient temperature range of -15°C to +40°C and a maximum installation altitude of 1000m. It is available in two standard dimensions: 800×1810×2380mm and 1000×1810×2380mm, with weights ranging from 840kg to 1440kg, allowing for flexible integration into compact substation layouts. We offer a range of custom configurations, including different current ratings, auxiliary control functions, and monitoring systems, to meet the specific requirements of each project.
Manufactured to comply with both national and international standards, the KYN28A-24 combines advanced technology, stable performance, and low maintenance needs. Backed by rigorous quality testing and our 11 years of export experience, this switchgear provides a flexible, reliable solution for all types of 24kV power distribution projects, from new construction to facility expansions.
B: Model meaning
C: Conditions of Use
- Altitude: no more than 1000m;
- Ambient temperature: maximum temperature:t40°C,minimum temperature:-15°C,and the average value measured within 24 h does not exceed35°C;
- Relative humidity: the average value of daily relative humidity does not exceed 95%;the average value of monthlyrelative humidity does not exceed 90%;the average value of daily water vapor pressure does not exceed 2.2 kPatheaverage value of monthly water vapor pressure does not exceed 1.8kPa;
- The surrounding air is not obviously contaminated by dust, smoke, corrosive or flammable gases, steam or salt spray;
- Vibration or ground motion from outside the switchgear and control equipment is negligible;
- The amplitude of electromagnetic interference induced in the secondary system does not exceed 1.6kV;
D: Technical parameters
E: Related Products
For 40.5kV power distribution projects requiring a compact, fixed-type solution, we also recommend our XGN17-40-5 Box Type Fixed AC Metal-Enclosed Switchgear, which provides robust protection and reliable performance in industrial and utility applications.
