OEM Electrical High Voltage Switchgear 33KV Air Insulated Switchgear IEC Compliance
Product Overview
The ASHAN KYN61-40.5 Series is a premier air-insulated, metal-clad switchgear designed for the control and protection of three-phase AC 50/60Hz power systems. Rated for voltages up to 40.5kV (widely used in 33kV and 36kV networks), this switchgear is the central hub for utility substations, large-scale industrial plants, and renewable energy projects.
The core of the KYN61 is its center-mounted withdrawable vacuum circuit breaker (VCB), which allows for rapid maintenance and equipment isolation without compromising the integrity of the main busbar. Engineered for heavy-duty service, it provides an uncompromising combination of high insulation reliability and operator safety in a modular, rigid footprint.
Key Technical Advantages
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Center-Mounted Withdrawable VCB: The circuit breaker is mounted on a precision handcart, featuring distinct "Operating," "Test," and "Disconnected" positions to ensure total safety during maintenance.
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40.5kV High-Insulation Platform: Built on a 40.5kV frame to provide an extra safety margin for 33kV/36kV systems, ensuring stability during lightning impulses and power frequency surges.
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"Five-Prevention" Safety Interlocks: A comprehensive mechanical and electrical interlocking system prevents common operator errors, such as moving the breaker while it is closed or entering a live compartment.
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Compartmentalized Arc-Proof Design: The unit is divided into four grounded compartments (Busbar, VCB, Cable, and Low Voltage). This design localizes internal faults and protects personnel from arc-flash incidents.
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Rugged Al-Zn Construction: Fabricated from CNC-machined Aluminum-Zinc coated steel sheets, providing exceptional mechanical strength and a 20+ year service life in humid or coastal environments.
Technical Specifications
| Feature | Detailed Specifications |
| Rated Voltage (Ur) | 33kV / 35kV / 36kV / 40.5kV |
| Rated Current (Ir) | 1250A / 1600A / 2000A / 2500A |
| Rated Frequency | 50Hz / 60Hz |
| Short-time Withstand (Icw) | 25kA / 31.5kA (4 seconds) |
| Peak Withstand Current (Ipk) | 63kA / 80kA |
| Power Frequency Withstand | 95kV (1 min) |
| Lightning Impulse Withstand | 185kV / 200kV (Peak) |
| Protection Degree | Enclosure: IP4X / Compartments: IP2X |
| Standard Compliance | IEC 62271-200, CE, ISO9001 |
Primary Application Scenarios
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Renewable Energy Plants: The primary grid-connection switchgear for utility-scale solar farms and onshore/offshore wind farms.
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Industrial Primary Substations: Main power feed for heavy industry, including steel mills, mining operations, and petrochemical plants.
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Regional Grid Distribution: Reliable secondary distribution for metropolitan 33kV power grids.
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Infrastructure
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