Designing Effective Surge Protection for Data Centers

This application note serves as a guide for designing effective surge protection systems for data centers. It outlines the necessity of surge protection due to the vulnerability of data centers to transient voltage surges caused by various factors such as lightning strikes and power grid switching. The document details a recommended three-stage protection strategy, which includes primary protection at the service entrance, secondary protection at distribution panels, and tertiary protection at the point of use. Each stage is described with its purpose and recommended surge protective devices (SPDs), classified according to UL 1449 standards. Additionally, the note provides guidelines for selecting the appropriate SPDs, installation steps, and compliance with relevant standards such as UL 1449 and IEC 61643-11. The document emphasizes the importance of proper installation and maintenance of SPDs to ensure effective surge protection, thereby safeguarding critical equipment, preserving data integrity, and maintaining operational continuity in data centers.