High-Voltage Switchgear Series

A: Product Overview

The KYN61-40.5 armored metal-enclosed switchgear is a factory-improved, high-performance solution specifically engineered for three-phase AC 50Hz power systems rated up to 40.5kV. It acts as essential primary power distribution equipment widely deployed in power plants, large substations, industrial parks, and mining facilities to receive, distribute, control and protect high-voltage electric power. Adopting mature and standardized design technology, this switchgear fully complies with international industrial standards and adapts to most conventional industrial power supply scenarios.

Built with a fully armored and sealed metal structure, the equipment greatly improves operational safety and structural stability. It is equipped with complete anti-misoperation interlock mechanisms to prevent common operational errors, including off-load handcart movement, live grounding switch operation and accidental access to live compartments. These built-in safety mechanisms effectively avoid equipment failure and personal safety risks, providing stable and foolproof protection for operators and the entire power distribution system.

The KYN61-40.5 switchgear features modular assembly structure with high-quality aluminum-zinc plates and precision CNC processing, ensuring solid structure, strong deformation resistance and convenient on-site installation. The internal cabinet space is reasonably partitioned, with sufficient cable room and standard air clearance, which eliminates the need for extra insulating accessories and simplifies daily inspection and maintenance work.
This series of switchgear supports flexible configuration of mainstream vacuum circuit breakers, including domestic ZN85, VN1 series and international mainstream VD4 and HD4 models. It supports multiple current specifications and optional forced air cooling design to adapt to high-current working conditions. All matched breakers meet industrial-level switching standards, ensuring stable breaking performance and long mechanical service life under long-term continuous operation.

This switchgear delivers outstanding environmental adaptability, supporting stable long-term operation under standard altitude, temperature and humidity for most indoor and outdoor power distribution scenarios. For humid and high-temperature harsh conditions, it comes with a built-in anti-condensation heater to avoid internal condensation and component aging, with optional auxiliary heat dissipation parts to release operational heat and sustain stable performance. For extreme working environments beyond standard specifications, we offer customized upgrades including optimized ventilation, heat dissipation structures and adaptive control systems. These upgrades enhance the equipment’s environmental compatibility and operational stability, extending its overall service life in complex industrial power distribution scenarios.

B: Model meaning

C: Conditions of Use

• The altitude does not exceed 1000m;
• Ambient temperature:-25°C ~+40°C;
• The daily average is not more than 95%, and the monthly average is not more than 90%;
• There are no flammable gases, explosion hazards, serious contamination, chemical corrosion and frequent severe vibrations.

D: Special use environmental conditions

• When the switchgear is used under normal environmental conditions as specified in this instruction manual, the company andthe user may negotiate and agree on special operating conditions that exceed normal operating conditions
• In order to prevent condensation, the switch cabinetis equipped with a heater. When the switchgear is in standby,it should beput into use.Even in normal operation, you should pay attention to the application.
• The heat dissipation problem of the switchgear can be solved by additional ventilation.

E: Main feature

• The cabinet is made of aluminum-zinc plate and processed by CNC equipment. It is formed by bolting or riveting. The structure is fully assembled.
• It can be equipped with ZN85-40.5 vacuum circuit breaker handcart, VN1, VD4 or HD4 vacuum circuit breaker handcart. The main busbar of the switchgear can be connected without transition cabinet.
• The space of the cable room is sufficient, and the air clearance can be ensured to be more than 300mm. There is no need to install insulation spacers between the phases.

F: Technical parameters

G: Explore More Solutions

If you need a compact fixed-type solution for high-voltage applications, check out our XGN17-40.5 Box-Type Fixed AC Metal-Enclosed Switchgear. It features a robust structure and reliable performance, ideal for industrial power distribution projects.