Since the CGZ1 400V complete switchgear of Changkai was successfully put on the grid in Suzhou Metro Line 1 in 2018, facing the competitive market environment, employees of all departments of the company worked closely and cooperated with each other, and the project team always persevered and treated each tender seriously. They won the affirmation of experts and owners with their excellent solutions and perfect services, and in August 2021, they successfully won the tender of 400V switchgear (supporting with CW3 and CM3 series circuit breakers) for the whole line of Suzhou Metro Line S1 and Line 6, realizing the company's continuous breakthrough in the metro market.

      Just yesterday, Changshu switch CGZ1 low-voltage power distribution cabinet for Suzhou metropolitan rail transit line S1 was successfully delivered and lifted at the first station of Dongting Lake Road!

Suzhou Railway Line S1: starts from Yiting Road Station of Suzhou Industrial Park in the west and passes through the whole urban area of Kunshan in the east, ending at Huaqiao Station of Kunshan. 41.25 km long, S1 is an underground line with 28 stations and an average station spacing of about 1.5 km, starting from Weiting Station of Suzhou Industrial Park in the west, passing through the core area of the central city of Suzhou Industrial Park and Kunshan, Economic and Technological Development Zone and Huaqiao International Business Zone, etc., ending at Huaqiao station and connects with Shanghai Railway Line 11.

Suzhou Railway Line 6: It is expected to open for initial operation in June 2024, with a total length of 36.12 km; 31 stations, all of which are underground; 6-car B-type trains are used. The line starts from Suzhou New District Railway Station in Suzhou High-tech Zone, passes through Suzhou High-tech Zone, Gusu District and Suzhou Industrial Park, runs through Suzhou New District Station of Shanghai-Nanjing Intercity Railway, Jingyan New Town, Huqiu, Pingjiang New Town, Ancient City, Suzhou University, Suzhou CBD, Jinji Lake, Suzhou Olympic Sports Center and Sangtian Island, and ends at Xinqing Road Station in Suzhou Industrial Park in the east, running northwest-southeast.

Products used: The total number of low-voltage distribution cabinets of Line S1 and Line 6 is about 1,800, using our original CGZ1-type low-voltage distribution cabinets, and supporting our CW3 intelligent frame circuit breakers and CM3 series thermal-magnetic plastic-case circuit breakers, CM3E-type electronic plastic-case circuit breakers and CH3 series miniature circuit breakers.

High-end winning

In the wave of domestic high-end substitution and promoting the process of localization, the company's products have been used in the rail market in large quantities for many years. With the advantages of high reliability and high cost performance, the monopoly of foreign brands was broken in 2020 in the core distribution occasion of 350KM/h (a class of load), and for the first time the whole line of 400V circuit breakers were made of domestic brands.

At present, Changshu switch has a complete railroad operation performance of passenger dedicated line main line, intercity railroad main line, subway main line, heavy-duty railroad main line, overseas railroad main line and general speed railroad main line. As early as 2000, Iran Tehran subway has used Changshu products, and in recent years, representative rail projects include: Shanghai subway line 3, Suzhou subway line 1, south-central Shanxi railroad corridor (heavy-duty railroad). Newly built Changzhutan intercity (200km/h high speed railway) in 2016, new Meishan passenger special project (250km/h high speed railway) in 2019, Guangdong section of Gangshen high speed railway (350km/h high speed railway) in 2021, etc.
Proof of rail performance operation

In the future, Changkai will continue to take practical action, use science and technology to lead and take responsibility to show the light of national products, focus on domestic high-end alternative, focus on improving the core competitiveness of products, and continue to contribute their strength to the rise of national brands!