VOLTWERK VC 200 Instrucciones De Servicio página 139

Transformerless central inverter
Requirements of the medium voltage transformer
Pulsed inverters, suitable for operation with IGBT (Insulated Gate
|
Bipolar Transistor). By using pulsed inverters, voltages to earth of up to
1500 V can occur.
DC
You can find specifications regarding the distortion factor (Total
|
Harmonic Distortion, THD) and the DC proportion in the specifications.
Short circuit voltage U
|
For the thermal design of the medium voltage transformer, note the
|
load curve and the ambient conditions of the installation location.
Low voltage side
(secondary side)
Interlinked voltage
(between the phases)
Rated capacity
Vector group
Short circuit voltage
Medium voltage side (primary side)
In accordance with the specifications of the energy supplier
If you combine transformerless central inverters with another of the
manufacturer's inverters, you must use corresponding medium voltage
transformers.
Operating manual
4 Installation location
= 4–6%, based on the inverter.
K
Level of performance
200 kVA 300 kVA
300 V 300 V
eff eff
200 kVA 300 kVA
Dyn5, Dyn11 Dyn5, Dyn11
or Dd0 or Dd0
4–6 % 4–6 %
350 kVA
315 V
eff
350 kVA
Dyn5, Dyn11
or Dd0
4–6 %
49