Lightning Surge Protection requires certain measures

Direct Lightning protection

Protect your facilities and properties from high energy surges.
It won't be able to expect any satisfactory result and effect with insufficient tools.


Comparison between Lightning and Surges with other Various Electromagnetic Hazards

Type Typical Applications Typical Protection Devices Used Main Selection Criteria
Lightning Equipment connected to external
power and communication lines
Thyristors, Metal Oxide Varistors,
TVS diodes, Gas Discharge Tubes
Continuous Operating voltage, Residual/
clamping voltage, surge energy/current ratings
(Electrostatic Discharge)
Electronic equipment with a human
interfaces and data ports
Polymer ESD Suppressors, TVS
Diode Arrays, Multilayer Varistors(MLVS),
LED protectors
Uni/bi directional, ESD voltage rating,
low dynamic resistance, low clamping
voltage, capacitance
(Electrical Fast Transient)
Equipment that has, or is connected to, a system
or circuit with switched inductive loads or
mechanical relays
Individual TVS Diodes, Metal Oxide
Varistors, LED protectors
Fast rise time response and recovery
for repetitive pulses
Inductive load switching
and commutative spikes
Equipment associated with large motors, pumps,
compressors, relays, and AC power distribution
Metal Oxide Varistors, TVS Diodes,
Gas Discharge Tubes
Energy/peak current rating, operating
voltage, surge current rating
Switching /
Diversion Current
Wide range of electrical and electronic circuits Switching Thyristors, LED protectors Proper blocking voltage, and current carrying capacity
Direct lightning strike :
1Striking of external lightning protection system, process structure (in industrial plants), cables etc.
1aVoltage drop at the impulse earthing resistance (Rst)
1bInduced voltage in loops
Distant lightning strike :
2aStrike into medium-voltage overhead lines
2bSurge travelling waves on overhead lines due to cloud-to-cloud lightning
2cFields of the lightning strike

Direct lightning disappears from the lightning rod to grounding system, but not 100%.
Approximately 50% of direct lightning enters the building.

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