Green Switchgear Technology

● Using vacuum interrupter for breaking. No SF₆ gas used, and no decomposition of toxic substances.

● Insulated by clean air.

● The switchgear is completely free of SF₆ gas usage and emission, achieving emission reduction and environmental protection purposes.

How does the green switchgear achieve emission reduction?

Green Switchgear Technology

1. No SF₆ gas usage and emissions, reducing green house gas emissions; 

2. No toxic gas produced, harmless to people and the environment;

3. Miniaturized, the volume is half of the traditional switchgear.

4. The main parts are sealed in stainless steel tank, maintenance-free.

5. Especially suitable for sandstorm, coastal corrosion environment, underground and indoor space.

6. Products for 12KV、24KV、40.5KV、72.5KV、 145KV。

What Is SF₆ Gas?

● One of the main factors that the transmission equipment industry's impact on global climate change comes from the usage and emission of SF₆ gas.

● Due to its good insulation and arc extinguishing efforts, 80% of SF₆ gas is used in switchgears.

● The continuous increase of power grid has resulted in the increase of the usage and emission of SF₆ gas.

Greenhouse effect of SF₆

● SF₆ is one of the six emission reduction greenhouse gases stipulated by the Montreal Protocol and the Tokyo Protocol;

● Its global warming potential (GWP) is 25,200 times of CO₂. That is, the emission of one ton of SF₆ is equivalent to the emission of 25,200 tons of CO₂.

● SF₆ gas has excellent stability at room temperature and has an atmospheric life of up to 3200 years

Environmental Effects of SF₆

After SF₆ is decomposed through arc discharge, various toxic fluorides such as SF₄, S₂F₂, S₂F₁₀ are produced, which seriously endangers human health and the environment.

SF₆ Emission in China

SF₆ Emission in the World

International Greenhouse Gas Control Policies

The international communities issued the greenhouse gas control policies on the basis of “The Paris Agreements”. For example, the European Union, GCC,  and the United States set up the target of carbon neutrality is by 2050.

SF₆ Emission Control Policies

● The SF₆ Control plan issued by the State Grid Corporation of China in 2022 expects that SF₆ will peak in 2025, and will be neutralized in 2050.

● In March 2023, the European Parliament announced to ban  the greenhouse gases SF₆ totally in switchgear after 2032.

● In the United States, Senate Bill 32 (2016), passed in 2016, required the grid to reduce greenhouse gas emissions such as SF₆ by 40 percent below 1990 levels by 2030.

SF₆ reduction project case one

Liaoning Northwest Water Supply Co., Ltd. purchased 15 sets of outdoor green HG6-72.5KV H-GIS products from Shenyang Huade High-tech Electric in 2020. Using traditional SF₆ insulated switchgears instead, 100kg SF₆ gas used  in a single set, and the total 1500kg SF₆ gas used in the project.

According to the "Guidelines for the Preparation of Provincial GHG Emission Inventories" and the United Nations Climate Change Committee emission reduction methodology AM01119, compared with the traditional products, the SF₆ emission reduction of the project cycle in the production process, use process, and disposal process is 65.25kg per year, equivalent to 1644 tons of CO₂ per year. The total emission reduction of the project cycle for 20 years is 32,880 tons of CO₂.

Total Carbon Reduction： 32880 Tons

SF₆ reduction project case two

Zhangjiakou city green electric heating project for Beijing Winter Olympics purchased 62 sets of green HG3-40.5KV products from Shenyang Huade High-tech Electric in 2019. Using traditional SF₆ insulated switchgears instead, 4.4kg SF₆ gas used  in a single set, and the total 272.8kg SF₆ gas used in the project.

According to the "Guidelines for the Preparation of Provincial GHG Emission Inventories" and the United Nations Climate Change Committee emission reduction methodology AM01119, compared with the traditional products, the SF₆ emission reduction of the project cycle in the production process, use process, and disposal process is 11.73kg per year, equivalent to 295 tons of CO₂ per year. The total emission reduction of the project cycle for 20 years is 5912 tons of CO₂.

Total Carbon Reduction： 5912 Tons

SF₆ reduction project case three

State Grid Corporation of China in Qinghai Xining city branch purchased 44 sets of green HG4-12KV products from Shenyang Huade High-tech Electric in 2016. Using traditional SF₆ insulated switchgears instead, 2.5kg SF₆ gas used  in a single set, and the total 110kg SF₆ gas used in the project.

According to the "Guidelines for the Preparation of Provincial GHG Emission Inventories" and the United Nations Climate Change Committee emission reduction methodology AM01119, compared with the traditional products, the SF₆ emission reduction of the project cycle in the production process, use process, and disposal process is 4.785kg per year, equivalent to 121 tons of CO₂ per year. The total emission reduction of the project cycle for 20 years is 2412 tons of CO₂.

Total Carbon Reduction： 2412 Tons