Did You Know
The bird is immune to the high voltage since it has single reference of potential and isolated from other reference of potential.
Solution
Single Reference Isolated Grounding System To build immunity to the Telco System f rom the lightning pulse.
Did You Know
Lightning current pulse is just 8/20uS
When lightning strikes, our grounding conductor react more as inductive reactance /impedance?
Effect caused by
Resistance
By R (Resistance) :
- V = l x R
- = l x R h o x U A
- = 3000 x 0.01725 x 10/400
- = l.2Volt
lmpendance
By XL (Inductive Reactance) :
- v = Lxdl/df
- = 11.57 uH x 3000 I 8uS
- =4,300Volt
Solution
Since light ning characteristic creat es complexity in our grounding system, grounding conductor shall be LIGHTNING CONDITIONED, i.e:
- As Stright as possible
- Must not be surrounded by metallic closed path
Did You Know
Our metallic part or conductor will corrode, especially at out door connection
Solution
Exothermic welding as Free maintenance connection
Exothermic welding result has higher current capacity than the conductor
Did You Know
What is the effect?
Grounding conductor's impedance can be higher than equipment conductor, therefore lightning current flow easier to the equipment instead of to the dedicated grounding conductor. That means destruction to the equipment by lightning.
Solution
When lightning strikes, our grounding conductor react more as inductive reactance /impedance?