Modern Lightning Protection Measures
Modern Lightning Protection Measures
Modern lightning protection measures including external lightning protection and internal
lightning protection. External lightning protection means the lightning protection measure
is carried out of the building. To block lightning outside the building, so that we can
protect human, animal and building from being damaged by lightning strike. Internal lightning
protection means that we try to make protection on every channel which may transfer and
respond to the lightning, so as to prevent the lightning damaging the electronic equipment
and electrical system, and further protect human and electrical equipment.
Modern lightning protection can simply use ABCDGS these seven letters to summary, which
represents Avoid, Bonding, Conduction, Dividing, Grounding, Shielding respectively.
It is an effective way to adopt the lightning protection measure of "Avoid". When choosing
the location of the building, we should avoid the place where is more likely to be the
lightning strike zone.
Bonding, physically speaking, is to solder different kind of metal materials with thick guide
line, or solder them together directly to make sure the electric potential between them is equal.
The function of conducting is to release the strong power of lightning to the earth. In this way,
it can stop the lightning damaging the equipment.
Dividing means the over voltage current is divided to release to the ground when passing the surge
arrester.
Grounding is to release the lightning energy to the ground. It is the most important and the most
difficult part of the lightning protection engineering. Shielding is the lightning protection measure
that use the mental net, foil or tubular to wrap the protection target up. Although every measure
has its own way and its own function, they can not be separated. Only when they work together,
can the lightning protection achieve its best effect. When a surge protector is installed to
protect the equipment, it involves most of these seven measures.Grounding is the foundation of
the lightning protection engineering. Without it, bonding, conducting and dividing can not
functioning as well as hope. In addition, every kind of shielding should be grounded well.
Therefore, measures of " BCDGS" is a connected with each other as a whole.
We should make sure that only when they are all carried out can the lightning protection
engineering achieve its perfect effect.
