KYN61-40.5 Indoor AC Metal-Enclosed Withdrawable Switchgear The KYN61-40.5 is a high-performance indoor AC metal-enclosed withdrawable switchgear designed for medium-voltage power distribution systems, typically rated at 40.5 kV. It is widely used in industrial plants, substations, and commercial facilities to ensure reliable power distribution, protection, and control. The switchgear complies with international standards such as IEC 62271-200 and GB/T 3906, ensuring safety, durability, and operational efficiency. Design and Construction The KYN61-40.5 features a robust metal-enclosed structure, providing excellent mechanical strength and protection against environmental factors. The modular design consists of multiple compartments, including: 1. Circuit Breaker Compartment – Houses the vacuum circuit breaker (VCB), which ensures efficient interruption of fault currents. 2. Busbar Compartment – Contains the main busbars for power distribution, insulated to prevent short circuits. 3. Cable Compartment – Facilitates easy cable termination and grounding. 4. Relay and Control Compartment – Accommodates protection relays, meters, and control devices for monitoring and automation. The withdrawable mechanism allows for safe and convenient maintenance, enabling the circuit breaker to be moved between "connected," "test," and "disconnected" positions without exposure to live parts. Key Features - High Safety – Fully enclosed design with interlocks to prevent accidental contact with energized components. - Vacuum Interruption Technology – Ensures minimal maintenance and long service life. - Flexible Configuration – Supports various protection schemes, including overcurrent, earth fault, and differential protection. - Thermal and Arc Resistance – Constructed with flame-retardant materials to withstand internal arcing faults. - User-Friendly Operation – Equipped with mechanical/electric interlocks, ergonomic handles, and clear labeling for ease of use. Applications The KYN61-40.5 is ideal for: - Primary and secondary substations - Industrial power distribution networks - Renewable energy integration - Mining and infrastructure projects Advantages - Reliability – Ensures stable power supply with minimal downtime. - Compact Footprint – Optimizes space utilization in indoor installations. - Future-Proof – Compatible with smart grid and digital monitoring systems. In summary, the KYN61-40.5 switchgear combines advanced technology, safety, and flexibility, making it a preferred choice for modern medium-voltage power systems.