The site area of Ningbo Rail Transit (Metro) Lianqun Parking Lot covers 106,000 square meters.
According to Table 4.3.1 of GB 50343 -2012, from the consideration of importance, economy and value of electronic information system of parking lot, it belongs to the lightning protection of electronic information system of Class A building. Parking lot lighting, power supply, monitoring system and other electrical equipment use need to strictly comply with the relevant national electrical safety standards and norms to ensure that the parking lot power supply is safe, stable and efficient.
Ningbo Metro Lianqun parking lot Metro parking lot environment is vast and complex, once the power distribution system suffers from lightning, power grid switching, large equipment start and stop and other factors, will produce transient over-voltage (surge) and lead to equipment failure, triggered by system paralysis, and even bring about economic losses and fire and other accidents. Therefore, the subway parking lot pays great attention to the key factors of safety, reliability and durability of the power distribution system, and chose the easy to model number for the YSPD series of lightning surge protector for its circuit protection. Specific model parameters for: YSPD-25HA/3PN, YSPD-40C/3PN, the corresponding surge backup protector model parameters for: ESCB-25TA/4P, ESCB-40TC/4P.
Easily made several typical features of lightning protection SPD is particularly suitable for the use of rail transit subway environment:
-Different from the traditional surge protector need to add decoupler short board, easy to create lightning surge protector with energy automatically with the function of SPD no installation distance between the limitations, suitable for subway underground narrow space installation, no decoupler, installation is more convenient.
-Using MG composite technology, no renewal current and no leakage current, no risk of power failure, no risk of fire, suitable for the subway such an important project supporting the use of more secure;
-Has ultra-high over-voltage withstand capability, can continuously withstand 500V for up to 500 hours, with a large throughput of 100KA (10/350us), low Up value (1.5kV), and transient currents can be discharged in nanoseconds, especially suitable for rail transportation where there are high-frequency harmonics.
Easy to build YSPD surge protector adopts the main circuit release technology, when the SPD is subjected to overvoltage, even a small current will cause the release device to release, to avoid combustion, to avoid false alarms; no matter from the safety and durability, high efficiency and stability, or the convenience of the consideration, is the safe choice of the rail transit power distribution box for the large subway parking lot to construct a safe environment for the use of electricity, is worthy of trust!
