33KV Metal Clad HV Switchgear Electrical Distribution Cabinet Withdrawable Design

The ASHAN KYN61-40.5 Series is a high-performance, metal-clad switchgear designed for the control and protection of three-phase AC 50/60Hz power systems with rated voltages up to 40.5kV (commonly utilized for 33kV and 36kV grids).

This switchgear is engineered for the most demanding environments, serving as the primary grid-connection hub for large-scale Photovoltaic (PV) plants, wind farms, and heavy industrial substations. Featuring a center-mounted withdrawable vacuum circuit breaker (VCB), the KYN61 provides an uncompromising combination of high insulation reliability, operational safety, and maintenance efficiency.

• Advanced Withdrawable Design: The circuit breaker is mounted on a handcart with "Test" and "Operating" positions. This allow for rapid isolation and component replacement without de-energizing the main busbar.

• Superior 40.5kV Insulation: Designed with increased creepage distances and high-grade composite insulation (epoxy resin) to handle the electrical stresses of 33kV-40.5kV networks safely.

• "Five-Prevention" Safety Interlocks: Equipped with comprehensive mechanical and electrical interlocks to prevent operator errors, such as moving the breaker truck while the switch is closed.

• Arc-Proof Metal-Clad Enclosure: Built with high-precision CNC-machined Aluminum-Zinc (Al-Zn) coated steel plates. The cabinet is compartmentalized to localize any internal arc faults, protecting both personnel and adjacent equipment.

• Renewable Energy Optimized: Specifically configured to handle the fluctuations and grid-protection requirements of Solar PV and Wind Energy collection points.

1. Utility-Scale Solar Farms: Serving as the main AC collection and grid-entry switchgear for high-capacity PV arrays.

2. Wind Power Substations: Rugged power distribution for offshore and onshore wind turbine collection networks.

3. Industrial Substations: Main power feed for steel mills, petrochemical plants, and large-scale mining operations.

4. Regional Power Grids: Reliable secondary distribution for 33kV metropolitan and rural utility networks.

• Turnkey Customization: We provide full engineering support to integrate your preferred Vacuum Circuit Breaker (VCB) brands, including ABB VD4, Schneider HVX, or our proprietary VS1 series.

• Smart Grid Ready: Cabinets can be equipped with advanced digital protection relays, fiber-optic communication, and real-time temperature monitoring for SCADA system integration.

• Corrosion Resistance: The use of Al-Zn coated steel provides superior self-healing properties and 20+ years of rust protection in high-humidity or coastal environments.

• Rigorous Type Testing: Our units have passed comprehensive type tests for temperature rise, short-circuit withstand, and internal arc-flash safety according to IEC 62271-200 standards.

Q: Can this unit be used for 36kV networks?

A: Yes. The KYN61-40.5 is designed on a 40.5kV platform, making it perfectly suited and highly safe for 33kV, 35kV, and 36kV applications with a significant insulation margin.

Q: Does it include the primary and secondary protection relays?

A: We offer both "empty" cabinets for local assembly and "fully populated" units wired with high-end protection relays (SEL, Siemens, or ABB) based on your project's specific protection logic.

Q: What is the maintenance requirement for the VCB?

A: The vacuum circuit breakers used in our KYN61 cabinets are designed for 10,000+ mechanical operations and are virtually maintenance-free, only requiring periodic inspection and lubrication of the truck mechanism.

KYN61-40.5 Armored removable AC metal closed switchgear

KYN61-40.5(Z) type alternating-current metal-clad and metal-enclosed withdrawable switchgear (hereinafter referred to as switchgear) is a indoor complete set of power distribution unit of three-phase AC 50 Hz and rated voltage of 40.5 kV. Used for receiving and distributing the electric energy in power plants, transformer substations, mining and industrial enterprises,etc., it controls,protects and detects the circuits,also is applicable to frequent operation locations. This switchgear complies with GB/T11022-1999,GB3906-1991,DL404-1997,etc.