Overview
Direct strike protection uses air terminals or a mesh on the roof, down conductors and the earth termination; metal roofs and steel frames can act as natural components when they qualify. Surge protective devices (SPD) protect switchboards and electronics.
Design follows TCVN 9385:2012 or IEC 62305, starting with a lightning risk assessment. Earth resistance must be measured at acceptance and checked periodically, especially before the rainy season.
Uses
- 01Factories, warehouses and towers
- 02Data centres and electrical rooms
- 03Solar plants and substations
- 04Tanks and fuel stores
Selection and acceptance checks
- Measure earth resistance at acceptance and periodically
- Check exothermic welds and equipotential bonding
- Check SPDs at main switchboards
Reference standards
- TCVN 9385:2012
- IEC 62305
- NFPA 780
For reference only. The standards for each project follow its design documents, current Vietnamese codes and the investor’s requirements.
Sectors and solutions
Sectors
FDI factories Data centers Energy High-rise buildings
