Description

Pioneer in China's eco-friendly switchgear sector, we have specialized in R&D and manufacturing of SF₆-free switchgear for decades. With core technologies, we have established industry standards. Boasting a fully independent end-to-end production chain, we have built a product matrix of zero-emission and high-reliability eco-friendly switchgear, making us a trusted choice for power grid construction.

The 34.5kV 35kV 36kV 38kV Maintenance-Free Gas-Insulated Switchgear (GIS) is a high-performance medium-voltage power distribution core device tailored for modern smart grids and industrial power systems. It integrates maintenance-free design, advanced gas insulation technology, and stable power supply capabilities—addressing the pain points of frequent maintenance, environmental adaptability, and operational stability in traditional 35kV switchgear.

Adopting low-global-warming-potential (Low-GWP) eco-friendly insulating gas and hermetic stainless-steel gas chambers, it eliminates the need for regular gas replenishment or component disassembly inspection. As a critical unit in 35kV power transmission and distribution networks, it is widely applied in urban substations, industrial parks, new energy projects (such as wind and solar farms), and large-scale commercial complexes. It ensures continuous, reliable power supply for high-demand scenarios, while aligning with global energy conservation and emission reduction goals, making it a sustainable solution for long-term grid operation.

Feature

• 35kV-Level Maintenance-Free Operation：The hermetic gas chamber (with leak rate ≤ 0.1%/year) and wear-resistant mechanical components eliminate routine maintenance tasks like gas refilling and part replacement. It reduces operation and maintenance (O&M) costs by over 60% compared to traditional switchgear.

• Superior Stable Power Supply Performance：Equipped with vacuum interrupters for arc extinction and high-precision current/voltage transformers, it effectively resists short-circuits, overvoltage, and voltage fluctuations. It maintains a power supply reliability rate of ≥ 99.98% even in harsh environments (e.g., high humidity, dust, or extreme temperatures).

• Eco-Friendly & Safe Gas Insulation：Uses Low-GWP environmental protection gas (compliant with IEC 61730 standards) to avoid greenhouse gas emissions; the fully sealed structure prevents gas leakage and ensures personnel safety. It also has strong corrosion and pollution resistance, suitable for both indoor and outdoor installations.

• Compact Design & Smart Integration：The modular and compact structure saves 40% of installation space compared to air-insulated switchgear, fitting narrow areas like urban underground substations. It supports integration with intelligent monitoring systems to track gas pressure, temperature, and operating status in real time, enabling predictive fault management.

Product Parameters

The voltage classes of some of these eco-friendly switchgears include 6kV, 6.3kV, 6.6kV, 6.9kV, 7.2kV, 10kV, 10.5kV, 11kV, 11.5kV, 12kV, 13.2kV, 13.8kV, 14.5kV, 14.4kV, 15kV, 15.5kV, 15.6kV, 17.5kV, 20kV, 21.9kV, 22kV, 24kV, 30kV, 33kV, 33.5kV, 34.5kV, 35kV, 36kV, 38kV, 38.5kV, 40.5kV, 44kV, 45kV, 46kV, 66kV and 69kV. and customization is available.

Standard Environmental Conditions

• Altitude: ≤4000 m (extendable to 5000 m with special design)

• Ambient Temperature: -40℃ to +55℃ (24-hour average temperature ≤35℃)

• Relative Humidity: Daily average ≤95%, monthly average ≤90%