Schneider Altivar 71 VW3A7201 handleiding
Handleiding
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12 1757361 06/2012
Checking the installation
Connection of other loads (continued)
Correction circuit without reactor
Correction circuits are used at the center of the line supply of a company. Interference and damage on these circuits have consequences
on the line supply and can result in stoppage of the production process.
Although they are no longer currently made, many correction circuits without reactor are in use. A wide variety of problems arise from the
use of such correction equipment without reactor:
• Direct resonance
• Increase in resonance
• Switching transient
• Attenuation of central oscillations
The fact that a company returns energy to the line supply is not the only reason for the creation of a resonance phenomenon. The power
of the medium voltage transformer cos ϕ correction unit is the decisive element. The higher this power, the greater the risk of resonance.
The second important factor is the harmonic load of the medium voltage line supply.
This harmonic load is transmtted via the transformer and affects the low voltage level. More often than not the limits are exceeded by the
5th harmonic.
There are also risks of overvoltage for a structure such as that shown above. Even in this case, a circuit-breaker must be placed
in each current return circuit.
M
60kW
ATV71
Line supply
M
ATV71
M
ATV71
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 |
