Eco-Friendly Gas Insulated Switchgear

Eco-Friendly Gas Insulated Switchgear for Medium-Voltage Distribution — Zero SF6, Full Performance

DSY Switchgear’s Eco-Friendly Gas Insulated Switchgear is a premium zero-SF6 medium-voltage power distribution solution. Replacing high-GWP SF6 (GWP: 23,500) with eco-friendly dry air or nitrogen, this fully sealed switchgear covers rated voltages from 7.2kV to 40.5kV. It supports bus currents ranging from 630A to 3150A and delivers a short-time withstand current up to 50kA/4s, fully compliant with IEC 62271-200 and GB/T 3906 industry standards. Featuring IP65 shell protection, it adapts to all kinds of harsh and demanding operating environments. With over 60 independent patents and a professional team of 40 in-house technicians, DSY has been a qualified equipment supplier for State Grid and China Southern Power Grid since 2005, delivering reliable power distribution solutions for global projects.

Why SF6-Free Switchgear Is Now a Procurement Priority

Global F-gas regulatory requirements continue to become stricter worldwide. As a high-carbon greenhouse gas with a GWP of 23,500, SF6 is subject to increasingly stringent usage and emission restrictions across Europe, Asia and North America. At present, engineering and procurement teams prefer low-carbon, compliant alternative equipment that retains equivalent performance to traditional SF6 switchgear while eliminating regulatory risks.

Eco-Friendly Gas Insulated Switchgear perfectly addresses this industry demand. Adopting dry air and nitrogen as insulating media, it completely cuts greenhouse gas emissions. Meanwhile, it inherits the compact structure and fully sealed design required by modern power distribution infrastructure, achieving zero compromise on equipment stability and installation adaptability.

Technical Specifications

Core Product FeaturesZero SF6, Fully Compliant Insulation

This switchgear abandons traditional SF6 gas and adopts dry air or nitrogen as the insulating medium. Both eco-friendly media can be safely vented at the end of the equipment service life, saving the high costs and complex procedures of SF6 gas recovery, storage and harmless disposal. It enables your projects to fully comply with existing and upcoming global F-gas regulations.

The dry air type model operates stably in extreme low-temperature environments as low as -50°C without gas liquefaction risks, eliminating the need for auxiliary heating equipment required by SF6 switchgear and making it ideal for cold-region power projects.

IP65-Rated Fully Sealed Enclosure

The equipment shell features IP65 high-level protection, effectively blocking external dust, moisture and corrosive particles. The fully sealed structure isolates internal core components from external environmental interference, delivering stable operation for coastal substations, offshore wind platforms and industrial sites with severe airborne pollution.

The hermetic sealing design greatly extends the maintenance-free cycle, effectively reducing daily operation and maintenance pressure for on-site teams.

Built-In Vacuum Circuit Breaker

Arc quenching is independently completed by a built-in vacuum circuit breaker, while the dry air or nitrogen is only responsible for insulation. This structural design enables the equipment to reach a short-circuit breaking capacity of 50kA/4s, fully matching the performance level of conventional SF6 switchgear.

The vacuum interrupter meets M2-class mechanical endurance standards with 10,000 operating times, ensuring long-term stable operation and lowering component replacement frequency.

Five-Proof Mechanical Interlocking and Safety System

Each device is equipped with a complete five-proof mechanical interlocking system as standard configuration. The matched insulating gas real-time monitoring system supports automatic alarm and equipment lockout once the gas pressure exceeds the safe range.

Optional internal arc pressure relief protection is available for high-safety-standard projects. Multiple safety mechanisms work together to completely avoid operational missteps and equipment safety accidents.

Application Scenarios

Eco-Friendly Gas Insulated Switchgear fits diverse high-standard and complex power distribution scenarios, perfectly solving the compliance and environmental adaptability pain points of traditional switchgear.

Photovoltaic and Wind Energy Projects

Renewable energy projects are mostly located in coastal, high-altitude or remote areas with high corrosion risks and strict environmental compliance requirements. The IP65 sealed protection and zero-SF6 low-carbon design fully meet the dual demands of harsh environment resistance and green policy compliance for new energy projects.

Urban and Municipal Power Distribution

The compact modular cabinet is perfectly suited for urban underground substations. Adopting non-toxic and pollution-free insulating media, it requires no complex ventilation facilities, simplifying on-site installation and effectively reducing civil engineering and construction costs.

Data Centers and Industrial Facilities

For data centers and key industrial facilities that require zero power interruption, the equipment’s ultra-long maintenance-free cycle and reliable vacuum arc-quenching performance guarantee continuous and stable power supply. Matched with optional remote intelligent monitoring functions, it supports real-time equipment status observation without scheduled shutdown maintenance.

Quality Control and Documentation

DSY implements strict full-process quality inspection for all equipment before delivery, with core testing items as follows:

Partial Discharge Testing at 1.1× rated voltage to confirm zero internal insulation defects

Power Frequency Withstand and Lightning Impulse Tests verifying insulation levels against transient overvoltages

Gas Tightness Verification targeting a leakage rate below 0.1% per year for a 30-year service life

Mechanical Endurance Testing to M2 class standards for vacuum circuit breaker and operating mechanism

We provide a complete set of type test reports and technical drawings for every order, paired with full-lifecycle remote technical support. Customized OEM and ODM services are available according to your project one-line diagram.

Customization and Modular Expansion

Featuring a modular interval design, the switchgear supports free combination of multiple functional units including incoming line, outgoing line, bus coupler, PT, grounding and capacitor cabinets. Users can flexibly expand the equipment configuration with project upgrading without overall system redesign.

It supports intelligent function expansion such as gas status monitoring, partial discharge detection and SCADA-compatible remote monitoring. All configurations can be professionally customized to match your project’s one-line diagram and actual operation demands.

Frequently Asked Questions

Q1: What insulating medium does this switchgear use? What are its advantages over SF6 switchgear?

A: This switchgear adopts dry air or nitrogen as insulating media, with near-zero global warming potential compared with SF6’s GWP of 23,500. It features environmental friendliness, no toxicity and no need for professional gas recovery at end-of-life, fully complying with global F-gas regulations.

Q2: What is the equipment protection grade, and what environments is it suitable for?

A: The equipment shell reaches IP65 protection grade, capable of resisting dust, water splash and corrosion. It is widely applicable for wind farms, PV energy storage projects, data centers, municipal power distribution and various high-humidity, high-dust industrial scenarios.

Q3: Is its breaking performance equivalent to traditional SF6 switchgear?

A: Yes. Equipped with an independent built-in vacuum circuit breaker for arc quenching, it achieves a maximum short-time withstand current of 50kA/4s, with overall electrical performance completely comparable to traditional SF6 insulated switchgear.

Q4: Can the equipment be customized for specific project requirements?

A: Absolutely. We can customize interval configurations according to your one-line diagram, and support the addition of intelligent monitoring functions like partial discharge detection and remote monitoring. Professional OEM and ODM customization services are available.

Q5: What is the daily maintenance workload of this switchgear?

A: The fully sealed structure enables ultra-long maintenance-free operation with minimal daily maintenance work. The built-in gas pressure monitoring system can automatically monitor operating status and feed back abnormal data in real time.

Q6: Does the equipment meet international industry standards?

A: Yes. It strictly complies with IEC 62271-200, IEC 62271-100, GB/T 11022 and GB/T 3906 standards. Complete type test reports and technical documents will be delivered with each order.

Get in Touch

If you are looking for high-performance, low-carbon and fully compliant Eco-Friendly Gas Insulated Switchgear for your medium-voltage power distribution projects, feel free to contact our professional team for one-on-one technical guidance and accurate project quotation. Email us at [email protected].