Note On Hard Power Systems - KEB COMBIVERT F6 Series Instructions For Use Manual

CONNECTION OF THE POWER UNIT

5.2.3.3 Note on hard power systems

The service life of drive controllers with voltage DC link depends on the DC voltage, am-
bient 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 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
very high (>> 200) compared to the rated apparent output power of the drive controller
(S
out
S
Net
––––
k = >> 200
S
out
58
).
2 MVA (supply transformer)
–––––––––––––––––––––
e.g. k =
11,4 kVA (14F6)
A listing of filters and chokes => „5.3.1 Filters and chokes".
) of the mains is
Net
no choke
= 176 ––>
required