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We specialize in the research and development, as well as the manufacturing, of high-voltage switchgear, offering a diverse range of power distribution equipment meticulously designed for various power systems. The fundamental role of these devices is to facilitate the reception and distribution of electrical energy, providing comprehensive control, protection, and monitoring capabilities for circuits. Our overarching objective is to optimize resource allocation, guarantee a safe, reliable, and economical power supply, while simultaneously addressing evolving and diverse power demands and stringent environmental regulations.
At the forefront of technological advancement, we integrate new energy, new materials, new equipment, and advanced information, control, and energy storage technologies to achieve digital management, intelligent decision-making, and interactive transactions across the entire power generation, transmission, distribution, utilization, and storage process. To this end, we have developed intelligent switchgear featuring intelligent control, visual status monitoring, comprehensive performance diagnostics, and remote communication and control functions.
Concurrently, we actively promote environmentally conscious products, such as our environmentally friendly gas-insulated ring main units that utilize nitrogen as an insulating medium, and intelligent ring main units based on APG solid insulation technology, aiming to serve as viable alternatives to SF6 gas and mitigate environmental pollution.
Our product portfolio spans a broad spectrum of voltage levels, from 3kV, 7.2kV, and 12kV systems up to 24kV, 35kV, and even 40.5kV applications. Specific offerings include compact intelligent centrally mounted metal-enclosed switchgear, armored removable AC metal-enclosed switchgear, as well as fixed box-type units and ring main units. For instance, the KYN61 series is designed for 40.5kV systems, while the KYN28A and AZS 650i-12 models cater to distribution requirements within the 12kV to 24kV range.
The cornerstone of our product design philosophy is with a focus on safety and reliability. All our high-voltage switchgear rigorously incorporates a comprehensive "five-prevention" interlocking mechanism, effectively preventing operational errors and safeguarding both personnel and equipment. Through continuous structural optimization and technological innovation, we have successfully achieved miniaturization and compactness across our product lines; for example, the KYN61A-40.5 type switchgear significantly reduces dimensions while maintaining consistent phase spacing. Many of our products feature fully sealed systems, ensuring stable operation under diverse external environmental conditions and facilitating maintenance-free performance.
Our high-voltage switchgear is typically equipped with Reliable vacuum circuit breakers, such as the VS1, ZN12V, or VD4 series, alongside reliable load switches and isolating switches. These devices are extensively utilized in power plants, substations, industrial and mining enterprises, hospitals, schools, commercial centers, airports, railways, and urban and rural power grid upgrade projects, capable of accommodating demanding and frequent operations. We maintain long-standing technical collaborations with esteemed research institutions, including Xi'an High Voltage Electrical Equipment Research Institute and China Electric Power Research Institute, as well as various universities, to ensure our products consistently embody high technical content and forward-thinking design.
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View MoreWhat is Switchgear in a Power System?
Switchgear is a critical component in electrical power systems, designed to control, protect, and isolate electrical equipment. It consists of various devices such as circuit breakers, fuses, disconnect switches, relays, and control panels that work together to ensure the safe and reliable distribution of electricity.
In both industrial and commercial power networks, switchgear plays a vital role in minimizing the impact of electrical faults. When an abnormal condition such as a short circuit or overload occurs, switchgear detects the issue and automatically disconnects the faulty section from the rest of the system. This not only protects the equipment but also helps maintain uninterrupted service in the unaffected areas.
Switchgear is typically installed at different stages of a power system—generation, transmission, and distribution—to manage electrical flow and safeguard both the system and the people operating it. Depending on the application and voltage level, switchgear can range in size from compact low-voltage panels to large high-voltage substations.
What Are the Main Differences Between High-Voltage, Medium-Voltage, and Low-Voltage Switchgear?
Switchgear is categorized based on the voltage levels it is designed to handle. Understanding the differences between high-voltage (HV), medium-voltage (MV), and low-voltage (LV) switchgear is essential for selecting the right equipment for a specific application.
| Feature | Low Voltage (LV) | Medium Voltage (MV) | High Voltage (HV) |
|---|---|---|---|
| Voltage Range | Up to 1 kV | 1 kV to 36 kV | Above 36 kV |
| Application | Commercial/residential | Industrial/utilities | Transmission networks |
| Components | MCBs, MCCBs | Vacuum breakers, relays | SF₆ breakers, GIS systems |
| Size & Complexity | Compact/simple | Moderate/modular | Large/complex |
We produce medium and high voltage switchgear for a wide range of applications.
What is the Difference Between Switchgear and a Switchboard?
While both switchgear and switchboards are used in electrical power distribution systems, they serve different purposes and are built to handle different levels of electrical performance and complexity.
1. Function and Application
Switchgear is designed for more demanding applications where system protection, control, and fault isolation are critical. It includes components such as circuit breakers, relays, and protection devices that can interrupt high fault currents and safely isolate parts of the electrical network.
Switchboards, on the other hand, are primarily used for distributing power to various circuits and equipment within a building or facility. They typically house fuses, switches, and breakers but are generally less complex than switchgear systems.
2. Voltage and Interrupting Capacity
Switchgear is commonly used in medium- and high-voltage applications and is built to withstand and interrupt much larger fault currents. It often features advanced arc-flash protection, motorized mechanisms, and remote control capabilities.
Switchboards are usually limited to low-voltage environments and are not designed to interrupt large fault currents in the same way. They are more suitable for residential, commercial, or light industrial settings.
3. Design and Construction
Switchgear has a more rugged and compartmentalized design to enhance safety and reliability. It allows for maintenance and operation without shutting down the entire system.
Switchboards are generally more compact and cost-effective but may require a complete shutdown for maintenance or replacement of components.
How Do You Clean Electrical Switchgear?
Cleaning electrical switchgear is an essential part of maintenance that helps ensure system reliability, extend equipment life, and prevent faults caused by dust, moisture, or corrosion. However, because switchgear handles high electrical currents, it must be cleaned carefully and only by trained personnel following strict safety procedures.
Before any cleaning begins, the switchgear must be completely de-energized and locked out/tagged out (LOTO) to prevent accidental energization. Personal protective equipment suitable for arc flash protection should always be worn, even when the equipment is de-energized, to guard against any residual hazards.
Cleaning Steps
Visual Inspection:Begin with a thorough inspection to identify any signs of damage, overheating, moisture intrusion, or dust buildup. Note any components that may require replacement or more detailed attention.
Dry Cleaning:Use a vacuum cleaner with a non-metallic, anti-static nozzle to remove loose dust and debris. Avoid using compressed air, as it can push dust deeper into the equipment or stir up harmful particles.
Wiping Surfaces:For surfaces with grime or light corrosion, use lint-free cloths slightly dampened with an approved cleaning solution (such as isopropyl alcohol or a specialized electrical cleaner). Never soak components or allow moisture to enter internal parts.
Contact Cleaning:Inspect and clean contact surfaces with fine abrasive pads or contact cleaner if needed. Avoid excessive abrasion, as this can wear down the contact material.
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