CH 4 Chutes de Tension en Basse Tension

 

Fhurs `―Ebstgddgtehb Cdcftrequc 6 .E ( \ D  fhs   ϓ + ]Dsebϓ)  

L

∏S

fìldc

>

  6.799.(9,9< 0,=; _

Fmutc `c tcbsehb thtgdc gux lhrbcs `u nhtcur > ∏S tgldcgu + ∏S fìldc ∏S Nhtcur > 79 + 0,=; > 70,=; _ 70,=; ∏S% >   x799 > 6,;3 Eb (bhnebgdc) `'hõ1 E` > 3 x799 > 399G Dc fhurgbt `gbs dg dekbc `'gdencbtgtehb `u tgldcgu cst pcb`gbt dc `ångrrgkc `u nhtcur `c1 (7999 ‖799) + 399 > 7.099 G. dg fmutc `c tcbsehb gu bevcgu `u tgldcgu vgu`rg 1 Fmutc `c Pcbsehb cb Lgssc Pcbsehb

pgkc ;/79 

 

Fhurs `―Ebstgddgtehb Cdcftrequc 79    x

7.099 7.999

> 70 _   39

∏S

fìldc

>

  6.399.(9,9< 77,?0 _

63

∏S Nhtcur > 70 + 77,?0> ?,07%   099 Fc que cst thut é oget gffcptgldc pcb`gbt pcb`gbt ub `ångrrgkc.

Cxcnpdc <

Vhet ubc dekbc (tre + bcutrc) `c < 39 n, `c scftehb ;9 nn , ct pgrfhuruc pgr 739 G /fhsϓ /fhsϓ >9,=9. Cddc gdencbtc, cbtrc gutrcs, 6 ferfuets "duneírc" nhbhpmgsås < (`c