Security surveillance system of CS Vocational Technical Coll
CS Vocational Technical College is located at hilly terrain in Hunan CS. It is subtropical zone continental climate with abundant rainfall, four seasons, the annual thunderstorm days between 34.9 ~ 71.3 days, and it belongs to high minefield.
The college’s lightning protection design of security monitoring system is not perfect, and it was located in lightning strike prone areas, power supply system, monitoring system, network data system of security monitoring has suffered different extent losses due to lightning strike.
Design of lightning protection scheme
After receiving customer’s demand, WPX do a field visit to the school environment. Security surveillance cameras are widely distributed, the gathering image has a long monitoring distance when transmit to centre computer room, transmission lines and outdoor equipment are vulnerable to suffer lightning strike.
After know the detailed reason for the damage of the equipment, WPX made overall integrated lightning protection scheme which include sports field monitoring area, teaching area monitoring, dormitory area monitoring and other areas, according to each region’s power supply system, monitoring system, data interchange system, WPX also customized few surge protectors, and finished the installation & arrangement of integrated lightning protection system with the cooperation of college’s staff.
On site installation pictures
Surge protection equipments configuration table
|Serial No||Names of SPD||SPD Model||Number||Mounting location spec.|
|1||Class B power supply modular surge protector||WPX-MPA120-385/3+N||1||Main distribution cabinet|
|2||Class C power supply modular surge protector||WPX-MPA40-385/3+N||6||Regional distribution cabinet, monitoring center computer room|
|3||Socket surge protector||WPX-SPA104-1.8||10||Center computer room, monitoring data interchange box|
|4||Network surge protector||WPX-BHSA-24R2-5||2||Monitoring center computer room|
|5||Network surge protector||WPX-BSHA-16R2-5||4||District monitoring system data interchange box|
|6||Network surge protector||WPX-BSHA-8R2-5||10||District monitoring system data interchange box|
|7||Telephone surge protector||WPX-BLSA-T2-110||2||The guard telephone, modem|
|8||Grounding||Grounding||8||Grounding for surge protective device in each area|
Effect of lightning protection system
Since the surge protective device installation, it has experienced two thunderstorm seasons, security monitoring system is running well. Learned from customer’s feedback, all electrical equipment did not suffer lightning damage after installed surge protectors.
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