KEB COMBIVERT F5 Series, Instructions For Use Manual

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9 Dimensioning
9.1 Dimensioning instructions
The dimensioning of the COMBIVERT F5 AIC occurs to the maximum permissible rated
input current. The power specifications refer to 400 V rated input voltage.
The DC current is dependent on the adjusted DC voltage and is not measured sepa-
rately.
Precharging
Depending on the mains input circuit of the AIC unit either the „max. external charging
current“
I
ext
“ or the „max. permissible DC link capacity
C
ext
“ must be observed
(=>
„Technical data of COMBIVERT drive converters“
)!
Furthermore observe the required waiting time between two switch-on procedures to
protect the precharging resistors.
Mains input circuit type A:
No current limitation for external connected DC devices is available at DC terminals
(m+, --) of type A. Current limitation must be ensured by the external connected
devices. The maximum external charging current may not be exceeded (=>
„Unit Data“)
.
Mains input circuit type D1:
The current limitation of type D for the connected devices at the DC terminals (marking
+ PA, -) occurs by the integrated charging current limit. The specified maximum permis -
sible DC link capacity may not be exceeded by the connected devices (=>
„Unit Data“)
.
Max. permissible total charging current (
I
pre
)
The current indicates the maximum expected current during the precharging procedure
and can be used for dimensioning of the pre-charging contactor.
58
DIMENSIONING