GIS 40.5kV

The 40.5kV GIS is a high-end switchgear from Eaton’s Cooper (China), specifically designed for 35–40.5kV intermediate switching stations. Featuring a fully enclosed SF₆ gas insulation environment, a rated current of up to 2500A, robust short-circuit withstand capability, and a compact design, the 40.5kV GIS is the optimal choice for projects requiring guaranteed performance, safety, and long-term durability.

Impressive technical specifications of the 40.5kV GIS

Key Features:

• 40.5kV GIS is designed with SF6 gas insulation—a type of gas with excellent dielectric and arc-extinguishing properties, commonly used in high-voltage switchgear. The fully enclosed gas chamber design prevents leakage, maintaining a leakage rate below 1‰ per year, ensuring stable operation for 20-30 years without the need for frequent maintenance. This is an ideal solution for electrical systems that require high safety and durability.
• 40.5kV GIS can withstand short-circuit currents up to 31.5kA for 4 seconds, ensuring the equipment continues to operate safely during system overload incidents. Additionally, the four-side internal arc resistance (AFLR) at 31.5kA for 1 second provides comprehensive protection for both the equipment and operators. These features make the GIS a reliable choice for switching stations with stringent safety requirements.
• The product meets heavy load systems thanks to its stable operation at a rated current of 2500A. With this load capacity, the 40.5kV GIS is suitable for main substations, large-scale industrial manufacturing plants, or data centers—places where high stability is required and power interruptions are not permitted. This is a major advantage that helps optimize long-term operation without the need for early system expansion.
• Despite serving a 40.5kV power system, the 40.5kV GIS still possesses a compact design, significantly saving installation space compared to traditional switchgear. This is particularly important for projects with limited space such as indoor substations, RMU stations, or kiosk substations. Thanks to its modular structure, the cabinet also allows for flexible expansion when needed.
• The 40.5kV GIS complies with IEC 62271-100 and IEC 62271-200 technical standards, ensuring factors such as mechanical durability, switching performance, and electrical safety. These standards are mandatory conditions for application in large-scale power projects, key infrastructure, and modern industrial zones. This provides customers with peace of mind regarding the equipment’s quality and compatibility.
• With its enclosed structure, high-quality materials, and excellent corrosion resistance, the 40.5kV GIS has a long service life and requires almost no maintenance throughout its lifecycle. Minimizing maintenance activities not only saves costs but also reduces operational risks. This is a long-term investment solution that brings optimal economic efficiency to investors.

Practical Applications

• 35kV intermediate switching stations in factories or industrial zones
• Main switchgear systems in residential areas and commercial buildings
• Renewable energy projects such as solar power and wind power
• Substations in data centers and export processing zones
• Power grid systems requiring high operational stability and safety
• Space-constrained areas requiring high performance

40.5kV GIS – Optimizing Safety & Space in One Solution

40.5kV GIS is a testament to the perfect combination of modern insulation technology, smart design, and durable operational performance. With superior technical specifications, a long lifespan, and high endurance, the product meets all stringent standards in the electrical switching field.

Contact MP Co today for advice on the most suitable GIS solutions for your project—from manufacturing plants to key industrial zones. MP Co is committed to providing quality products and dedicated technical support services.