INSTALATIA DE PARATRASNET
P=2*(L+1)= 2* ( 32.4+16.25 ) =97.3 m
L = 28.4 m +2 m+ 2 m = 32.4 m
l= 12.25 m+ 2 m +2 m = 16.25 m
- CALCULUL DISTANTELOR DINTRE PLATBANDE : a1& a2
R=
R
…RISC MEDIU …Nivelul de
protectie impotriva trasnetului : normal
F ( nivel normal de protectie ; h= 8.7 m )
…..a1 =a2 = 20mm
- CALCULUL PRIZEI DE PAMANT
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RPP
> 1Ohm ……Utilizam 2 prize de
pamant
FOLOSIM 2 PRIZE DE PAMANT
- INSTALATIA
DE PARATRASNET
B.INSTALATIA DE FORTA
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