The consideration of some problems of lightning protection and earthing in telecom center

In order to reduce or avoid human and installation damage by lightning, a lot of lightning protection and earthing techniques have been invented. The IEC publication 61024-1 `Structure against direct lightning´ and China state standard GB 50057 `Design specification of lightning protection in structure´ are the main guidance for structure against direct lightning in China. Due to the amount of precision equipment installed in a telecom center, carrying out these lightning protection standards, which aimed to protect humans and some basic installations only against lightning, is not perfect enough. It couldn´t provide sufficient protection to the telecommunication network equipment. So the new effective measurements to protect the telecommunication centers and equipment against lightning need to be researched quickly. Though some specifications aimed at protecting telecom centers against lightning have been established, a lot of problems still exist. This paper provides some methods to solve the problems of direct lightning and lightning EMP protection, and earthing