30
TecHNIcAL DATA G6 400V cLASS
The service life of drive converters with voltage DC link depends on 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 considerable 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
).
k =
S
net
>> 200
e.g.
k =
2 MVA (supply transformer)
= 303 ––> Choke required
––––
–––––––––––––––––––––
S
out
6.6 kVA (12G6)
3.3.1 Overload and derating
80
100
120
140
160
180
200
220
f
d
(6 Hz)
f
0
(0 Hz)
f
out
/
Hz
I
N
/ %
I
HSR
I
N
I
OC
I
HSR
09G6 / 8 kHz
10G6 / 8 kHz
07G6 (8 kHz) & 09/10G6 (4 kHz) =
I
HSR
Legend
I
N
Rated current
f
out
Output frequency
I
OC
Overcurrent
f
0
Standstill
I
HSR
Hardware current limitation
f
d
Corner frequency
Figure 1:
Maximum load and derating depending on the switching frequency
Summary of Contents for COMBIVERT G6 series
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