Schneider Altivar 71 VW3A7201 handleiding
Handleiding
Je bekijkt pagina 10 van 38
10 1757361 06/2012
Checking the installation
Line resistances and contact resistances
The values of the capacitive currents of the cables depend on the conductive material. This is relevant for sizing. Aluminum conductors
must have a larger cross-section than copper conductors due to their high resistivity.
Whatever conductive material is used, the contact resistances of the connections must have a low impedance and the number of
connections must be kept to the absolute minimum.
Too many connections or contact resistances that are too high can result in overvoltages during power generation.
Based on a stable line supply with for example a nominal voltage of 400 V with a return current of 80 A, and a connection with a contact
resistance of 100 mΩ, a voltage dip of 8 V occurs (a correct connection has a contact resistance of approximately 1 mΩ). During power
generation if there are 7 connection points to the line supply, this results in a total voltage of 456 V.
M
ATV71
Δ
U
Δ
U
UU
Δ
U
U
Δ
U
I
Line supply
VW3A7...
Bekijk gratis de handleiding van Schneider Altivar 71 VW3A7201, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Schneider |
| Model | Altivar 71 VW3A7201 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 2581 MB |
