The ASHAN KYN61-40.5 Series is a premier Medium Voltage (MV) switchgear solution engineered for the control and protection of 33kV, 35kV, and 36kV electrical systems. This air-insulated, metal-clad assembly is designed for indoor installation in primary substations, industrial power centers, and utility-scale renewable energy plants.

Featuring a withdrawable center-mounted vacuum circuit breaker (VCB), the KYN61 provides a high-reliability interface for AC 50/60Hz networks. Its modular architecture ensures that every high-voltage component—from the main busbar to the cable termination—is housed in a separate, grounded compartment to ensure maximum personnel safety and system uptime.

• Withdrawable VCB Technology: The center-mounted VCB truck facilitates rapid "plug-and-play" maintenance. The breaker can be easily moved to "Test" or "Disconnected" positions while the cabinet door remains closed.

• 40.5kV Insulation Platform: While utilized for 33kV/36kV grids, the unit is built on a 40.5kV insulation frame, providing superior dielectric margins and reliability against voltage surges.

• Arc-Proof Compartmentalization: Fully compliant with Internal Arc Classification (IAC), the cabinet is divided into four metal-enclosed zones (Busbar, VCB, Cable, and Control) to localize internal faults.

• Corrosion-Resistant Armor: Built with high-precision CNC-machined Aluminum-Zinc (Al-Zn) coated steel, offering self-healing properties against scratches and a 25-year service life in humid or industrial climates.

• Advanced Interlocking System: A rigorous mechanical "Five-Prevention" interlock prevents incorrect operations, such as pulling the breaker under load or closing the earthing switch while the busbar is live.

1. Renewable Energy Substations: Main MV switchgear for offshore/onshore wind farms and centralized solar PV plants.

2. Heavy Industry: Primary power feed for steel mills, cement plants, and petrochemical complexes.

3. Utility & Grid Infrastructure: High-reliability secondary distribution for metropolitan 33kV urban grids.

4. Mining Operations: Robust power control for remote extraction sites requiring high mechanical and electrical durability.

• Total Customization: We integrate with leading VCB brands (ABB VD4, Schneider HVX, or our proprietary high-performance VS1) and offer tailored protection relay schemes (SEL, Siemens, or GE).

• Smart Grid Compatibility: Designed with dedicated channels for fiber-optic communication, digital metering, and real-time thermal monitoring of busbar joints.

• Space-Efficient Design: Despite its high voltage rating, the KYN61 footprint is optimized to minimize substation real estate costs while maintaining safe electrical clearances.

• Rigorous Testing Protocol: Every cabinet undergoes 100% factory routine tests, including partial discharge testing (kept below 10pC) and mechanical sequence verification before dispatch.

Q: Is this cabinet suitable for 36kV grids?

A: Absolutely. The KYN61 is rated for 40.5kV maximum service voltage, making it an extremely safe and robust choice for any grid operating at 33kV, 34.5kV, or 36kV.

Q: Can I request special cable entry configurations?

A: Yes. We offer bottom-entry or top-entry (via bus-duct) configurations and can customize the cable compartment to accommodate multiple parallel high-voltage cables.

Q: What is the benefit of the Al-Zn coated steel?

A: Al-Zn coating provides significantly better corrosion resistance than traditional painted steel and offers superior electromagnetic shielding and grounding continuity.

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.