The power distribution system of buildings includes high-voltage distribution systems, low-voltage distribution systems, DC distribution systems, emergency power supply systems, and power monitoring, among others. Power surge protectors are installed in these subsystems. It's important to note that there is a significant difference in voltage levels across different countries and regions, making the selection of power surge protectors crucial. Among the key considerations, adjusting the Uc value appropriately is most critical, along with adjusting the maximum discharge current Imax and the number of poles for the surge protector.
For lightning protection in AC power distribution systems, it is necessary to implement graded protection based on the location of distribution cabinets, distribution boxes, and key equipment. By using multi-level protection, surge voltages can be limited to the lowest level possible, thereby safeguarding backend electrical devices and personnel safety.
Product Name: KILOAMP Primary Power Surge Protector KPA275-2540R
Main Parameters: T1, Iimp: 25kA (10/350μs), Uc: 275V-440V.
Installation Location: Installed at the input end of the main distribution cabinet.
Main Function: Used to defend against initial impacts of lightning overvoltage, protecting the main distribution cabinet and subsequent distribution equipment from damage caused by lightning overvoltage.
Backup Protector: Operating current not less than 63A
Grounding Requirements: The grounding terminal of the surge protector must be reliably grounded, with a grounding wire no less than 16mm² and a grounding resistance less than 4Ω.
Product Name: KILOAMP Secondary Power Surge Protector KPB275-10040R
Main Parameters: T2, Imax: 100kA (8/20μs), Uc: 275V-440V.
Installation Location: Installed at floor distribution boxes or at the front end of important equipment.
Main Function: Used to further reduce overvoltage, protecting floor distribution boxes and subsequent distribution equipment from damage caused by lightning overvoltage.
Backup Protector: Operating current not less than 40A
Grounding Requirements: The grounding terminal of the surge protector must be reliably grounded, with a grounding wire no less than 16mm² and a grounding resistance less than 4Ω.
Product Name: KILOAMP Tertiary Power Surge Protector KPB275-4040R
Main Parameters: T2, Imax: 40kA (8/20μs), Uc: 275V-440V.
Installation Location: Installed at the end distribution boxes or at the front end of critical equipment (such as servers, UPS, etc.) to further reduce overvoltage.
Main Function: Further reduces overvoltage to protect end distribution boxes and backend electrical devices from damage caused by lightning overvoltage.
Backup Protector: Operating current not less than 32A
Grounding Requirements: The grounding terminal of the surge protector must be reliably grounded, with a grounding wire no less than 6mm² and a grounding resistance less than 4Ω.
Product Name: KILOAMP Quaternary Power Surge Protector KPB275-10/6
Main Parameters: T2, Imax: 10kA (8/20μs), Uc: 275V.
Installation Location: Installed at the front end of server racks, network cabinets, desks, etc., providing fine protection.
Main Function: Further reduces overvoltage to protect end distribution boxes and backend electrical devices from damage caused by lightning overvoltage.
Backup Protector: Internal circuit overheating protection
Grounding Requirements: The grounding terminal of the surge protector must be reliably grounded, with a grounding wire no less than 1.5mm² and a grounding resistance less than 4Ω.
In conclusion, for effective lightning protection in building power distribution systems, it is essential to select suitable power surge protectors based on the location and operating voltage of the equipment. Multi-level energy coordination can minimize the damage caused by lightning-induced surges.
English 
