instal_elec_dimensionnement.py

Created by famille-bvc

Created on October 24, 2024

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***           Demarche           ***

** 1. Courant d emploi Ib

S = P * a * b * c
    
a : doc p26
b : coef d utilisation
c : coef de simultaneite

        S
Ib = --------
     U*sqrt(3)
     
Ne pas oublier *10^3 au S si >1K

** 2. Dimensionnement

* a. calcul sections

determination coef K
p27 (non enterre)

K = K1*K2*K3*Kn*Ks

calcul Iz et Iz'
p29

Iz' = Iz/k

determination section
p30

Sph -> Sn -> SPE (p33)

* b. chute de tension

Dans le cable :
  
Iz / nb de section par phase
-> courant par section

On cherche dans le tableau p34

Produit en croix pour passer 
de 100m à ...m en %

Chute de tension totale :
  
=ds le cable + amont

* c. Icc amont et aval

Amont :
  
secondaire transfo p35
ou
Icc aval du cable en amont

Aval : 
  
p36

* d. choix du disjoncteur :
  - Tension
  - Nb de poles
  - Calibre
  - Pdc
  
* e. protection des pers

schema TN p41
  
* e. Protection des pers

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