Study on lightning protection technology for buildings with plastic-steel doors and windows on exterior walls

Using lightning surges generated by impulse voltage generator which conform to the International Standard IEC,we made an impulse experiment of lightning strikes on buildings´ plastic-steel windows and doors for studying the diffusing mechanism of lightning side struck plastic-steel windows and doors of buildings´ exterior wall. By combining this diffusion mechanism with manufacture and installation technology of the plastic-steel doors and windows, we found a fundamental principle in the lightning protection: the connection of metal components in the plastic-steel doors or windows and the connection between metal components in the doors or windows and lightning protection devices must be an equipotential connection. In addition, a construction method in lightning protection for buildings´ with plastic-steel doors and windows was suggested.