Air Insulated Switchgear
Air Insulated Switchgear (AIS) is a traditional and widely used switchgear design where live components are insulated and mounted using ambient air as the primary dielectric medium. It offers a clear layout with visible isolation, making it straightforward to operate and maintain.
Commonly deployed in outdoor and spacious indoor substations, AIS is valued for its cost-effectiveness, reliability, and scalability, suitable for applications where space is not a major constraint and accessibility for maintenance is prioritized.
Product Categories
We provide a comprehensive range of switchgear and protection solutions, including:
- SF6 Circuit Breakers
- Disconnectors
- JW High-voltage Earthing Switches
- Current Transformers & Voltage Transformers
Manufactured in compliance with international standards such as IEC 62271, IEC 60044, and IEEE C37, our products ensure safe operation, high reliability, and extended service life. They are widely applied in substations, transmission systems, renewable energy integration, industrial power networks, and urban grid expansions.
With superior insulation performance, precise measurement capability, and robust mechanical durability, our solutions enhance system stability, facilitate safe maintenance, and support intelligent protection and control in modern power distribution and transmission networks.
New products
JW-126~252 High-voltage Earthing Switch
Main features
- Application : in 126-252kV power systems for HV busbars.,
- Standards : IEC 62271-102,
- Parameters : Rated voltage:126kV, 145kV, 252kV. Rated short time withstand current, 3s: 40kA, 50kA. Rated lighting impulse withstand voltage: 550kV,1050kV.,
- Features : Compact structure, stable performance, reliable contact. The base is hot-dip galvanized and has good anticorrosive property. Simple installation and easy adjustment.,
Your Advantages
- Save Time and Boost Efficiency
- Unmatched Reliability and Quality
- Intuitive and Easy to Use
- Proven Results and ROI
- Designed for Seamless Integration
GW22-252 Disconnector
Main features
- Application : In rated voltage 35~220kV power system, to separating the circuits under off-load status, set up air electrical clearning between the tested electrical apparatuses and electrified circuit.,
- Standards : IEC62271-102,
- Parameters : 40.5-252kV.,
- Features : Simple structure, reliable operation. Simple installation and easy adjustment. Adopt anti - corrosion design, anti - corrosion performance.,
Your Advantages
- Save Time and Boost Efficiency
- Unmatched Reliability and Quality
- Intuitive and Easy to Use
- Proven Results and ROI
- Designed for Seamless Integration
LW43A-252 SF6 Circuit Breaker
Main features
- Application : for control and protection of power system up to 220kV.,
- Standards : IEC 62271-100,
- Parameters : 40.5kV~252kV.,
- Features : Excellent breaking performance. Good electrical performance and high insulation level. High mechanical reliability, long maintenance cycle. Easy installation, safe and reliable operation.,
Your Advantages
- Save Time and Boost Efficiency
- Unmatched Reliability and Quality
- Intuitive and Easy to Use
- Proven Results and ROI
- Designed for Seamless Integration