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Major Reasons for Installing Lightning Protection System
Safety: Protects lives by preventing lightning-related injuries and fatalities.
Property Protection: Safeguards buildings and structures from lightning-induced fires and damage.
Asset Protection: Preserves valuable equipment and electronics from costly surge damage.
Business Continuity: Ensures uninterrupted operations, minimizing downtime and financial losses.
Insurance Premiums: Can lower insurance premiums by reducing lightning-related claims.
Compliance: May be required by local building codes and safety regulations.
Peace of Mind: Provides peace of mind to homeowners, businesses, and property owners during thunderstorms.
Environmental Impact: Helps prevent fires that can harm the environment and wildlife.
Historical Preservation: Protects historical structures and artifacts from lightning damage.
Risk Mitigation: Mitigates the risk of lightning-related legal liabilities.
Installing a lightning protection system is a proactive measure that offers both safety and financial benefits.
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Lightning Facts
Lightning strikes are hazards to people, animals, buildings and equipment. It can cause building fire, service break or interrupt critical operations. In India, every year, many people are killed or injured by lightning. Geographical features and climate change are major factors influencing lightning. There are reliable systems that can minimise its harmful effects.
Most of the buildings are connected by overhead and underground cables forming a huge power network. It will be affected by lightning. Smaller transients may also cause degradation to electronic components and disruption of system performance.
Lightning Risk Analysis
A lightning risk assessment study is actually a measure of the risk of lightning strikes and potential damage. It assesses the lightning risks of the facility according to international standards. These calculations are based on the IEC standard 62305-2. After getting the result, adopt appropriate lightning protection methods. We have doing risk assessments based on computer software.
Surge Protection Devices
Nowadays most of the electronic devices are very small in structure and sophisticated. These tiny devices are voltage sensitive and closely packed. If there is a high intensity of lightning within 2kilometers over-voltage surges will conduct through the supply line and data cables. It will damage or degrade the devices in a very short time.
Now it can be prevented!
Install surge protection devices to protect equipment from overvoltage damages
Sources of Lightning Risk in a Building
1 Direct Lightning
First, lightning strikes directly on the building. This causes damage to the structure of the building, building fire and severe damage to equipment.
2 Indirect Lightning
Damage to buildings and equipment can also be caused by lightning strikes in the vicinity of a building or in trees. A portion of the high value of electricity generated by lightning can flow through metal parts of the building
3 Lightning on Power line
A lightning strike on a power line causes high voltage electricity to flow through service cables to equipment. This causes severe damage to the equipment.
4 Remote Lightning
Severe lightning strikes within a 2 km radius of a building can cause severe damage to electronic equipment inside the building. During a lightning strike, metal parts of buildings generate high amounts of electricity for a short period of time. This electricity flows through the path of least resistance to earth. Electronic devices are damaged due to this electric current.
Lightning Protection Methods
Proper lightning protection can only be achieved by protecting buildings from 4 sources of risk. The following are solutions.
1 External Lightning Protection System
The function of the external Lightning Protection system is to protect buildings from direct lightning. The air terminal is placed on the rooftop of the building and connected to Earthing System through a special conductor. When lightning occurs, the electricity flows directly to the earth through the down conductor. It will protect the building from damage.
When lightning strikes on the power line, the equipment connected to the line will be damaged. The proper solution for this issue is to install a surge protection device (SPD) at the power connection and connect it to a special maintenance–free earthing system.
3 Equi-potential Bonding System
In order to protect the building from indirect lightning, special equipotential bonding is required with metallic structures within the building.
Installation
The installation of Lightning protection system required special care. It should be ensured that it is installed under the direct supervision of an experienced engineer. The materials should be high quality and compliance relevant national standards.
A professionally installed lightning protection system can protect people, buildings and equipment. Surge Protection System should be installed to protect against Over Voltage Surges from the power line. All metallic parts of the building should be bonded with a separate bonding system.
All these require special maintenance-free earthing system. Due to this, the high amount of electricity generated during a lightning strike does not spread to the equipment but flows to the ground.
The huge amount of electricity generated during a lightning strike does not spread to the equipment but flows to the ground. Therefore special maintenance-free earthing system a required for dissipating the high value of current in a short duration.
The Equi-potential bonding system is used for protecting the building from indirect Lightning and Remote Lightning
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