As the longest subway line opened in Ningbo at one time, Line 4 has a total length of 35.95 kilometers. There are 25 stations, including 4 transfer stations. You can transfer to Line 1 at Daqingqiao Station and Ningbo Railway Station. Transfer to Line 3 at Children’s Park Station and transfer to Line 5 at Nangaojiaoyuan Station.
The Line 4 project starts from Cicheng, Jiangbei, connecting Zhuangqiao Railway Station, Ningbo Railway Station, Ningbo East Railway Station, Dongqian Lake Tourist Transportation Center and other important transportation hubs, Cicheng, Olympic Sports Center, Sanjiangkou, Dongqian Important functional sections of cities such as Huxincheng.

Shengdao (China) Electric Co., Ltd. mainly provides power guarantee for Ningbo Metro Line 4, involving the product low-voltage switchgear project.

product advantages:
       SIVACON 8PT low-voltage switchgear is a Siemens authorized cabinet carefully produced by Shengdao (China) Electric Co., Ltd. It is suitable for three-phase AC 50 (60) Hz, rated working voltage 400V, 660V, and rated current 6300A and below power supply system. Power plants, substations, buildings, hotels, airport terminals, large commercial complexes, data centers and other power systems, such as power, distribution and centralized motor control, capacitor compensation, etc., have beautiful appearance and excellent performance to ensure reliable operation of the system.

Product parameters:
▶ Rated working voltage: 400/660V
▶ Rated insulation voltage: 1000V
▶ Rated working current: horizontal bus 6300A, vertical bus 1250A (withdrawable MCC cabinet), 2500A (plug-in MCC cabinet)
▶ Rated short-time withstand current (1s): horizontal bus 100kA

Line 4 traffic news
Line 4 plans to use a single road from Cicheng to Dongqian Lake to organize traffic. The first and last trains depart from the two stations. The first trains depart from Cicheng Station and Dongqianhu Station at 6:00, and the last trains depart at 22:00 and 22:10, respectively.
On weekdays, the peak driving interval is 4 minutes and 25 seconds, the flat peak driving interval is 6 minutes and 25 seconds, and the low peak driving interval is about 10 minutes. The interval between 8:00-20:00 on weekends is 6 minutes and 25 seconds, and the interval is about 10 minutes in other periods.