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cONNecTION OF THe POWer UNIT
4.2.3.3 Note on hard power systems
The service life of drive converters with voltage DC link depends on the DC voltage,
surrounding temperature and the current load of the electrolytic capacitors in the DC
link. The use of mains chokes can increase the service life of the condensators to a con-
siderable extent, especially when connecting to „hard“ power systems or when under
permanent drive load (continuous duty).
The term "hard" power system means that the nodal point power (
S
Net
) of the mains
is very high (>> 200) compared to the output rated power of the drive converter (
S
out
)
(>>200).
k =
S
Net
>> 200
e.g.
k =
2 MVA (supply transformer)
= 176 ––> no choke
required
––––
–––––––––––––––––––––
S
out
11.4 kVA (14F6)
A listing of filters and chokes
Summary of Contents for COMBIVERT 10F6 Series
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