Dongqian Lake is located about 21 kilometers southeast of the downtown of Ningbo, Zhejiang Province, China. The terminal of Metro Line 4 is “Dongqian Lake Station”, which passes through Ningbo East railway station, Ningbo railway station, Beihuan Elevated Road, central urban area and other important areas, and transfers with 6 subway lines, including 1, 2 and 3. It plays an important role in the improvement of Ningbo subway network and the development of regional economy. The Dongqian Lake depot of Ningbo Metro uses Fortsurge Surge Protective Device.
With an area of 22 Square kilometre, Dongqian Lake is the largest natural freshwater lake in Ningbo and Zhejiang Province. Dongqian Lake can be described as a vast expanse of mist and boundless scenery. It is far away from the hustle and bustle of cities and towns. To the east of the lake is a rolling mountain range. The mountain is covered with green trees all the year round and the air is fresh. It can be called a “natural oxygen bar” and is a very precious ecological resource.
The Dongqian Lake depot of Ningbo Metro Line 4 is located in the enclosed area of Dongqian Lake Avenue, Yuquan South Road, Changshanjiang River and the planned Zijin Middle Road, only 1.6 kilometers away from the scenic spot Dongqian Lake. The planned land area of Dongqian Lake depot is 315000 square meters, which is equivalent to 44 standard football fields. It is the largest depot in Ningbo Rail Transit currently under construction, and the “Big Mac” deserves it.
Generally, the investment in subway projects is quite large, and the system is even more complex. More importantly, it is a place where people are concentrated. Due to the large number of electronic information system equipment inside, these systems affect the normal operation of the subway. Once struck by lightning or lightning waves, it will directly affect the normal operation and personal safety of the subway. In addition, the main body of the subway building is located underground, but facilities such as entrance and exit shelters, wind pavilions, and cooling towers are located on the ground, so these parts will become breakthrough points for lightning wave invasion.
So, while doing a good job of external lightning protection in the subway, it is also important to pay more attention to internal lightning protection. The most important point of internal lightning protection is to install high-quality Surge Protective Device in the power distribution system. This time, the Fortsurge Surge Protective Device has provided a very safe internal lightning protection for Dongqian Lake depot, and it is currently in good operation.